Newsletter by Center for Organic Photonics and Electronics at Georgia Tech

cope.gatech.edu

October 24, 2012

Newsletter

Stable Electrodes for Improving Printed Electronics by Jason Maderer, Communications & Marketing, Georgia Tech

Imagine owning a television with the thickness and weight of a sheet of paper. It will be possible, someday, thanks to the growing industry of printed electronics. The process, which allows manufacturers to literally print or roll materials onto surfaces to produce an electronically functional device, is already used in organic solar cells and organic light-emitting diodes (OLEDs) that form the displays of cellphones. Although this emerging technology is expected to grow by tens of billions

exposed to oxygen and moisture. This is why electronics in solar cells and TVs, for example, must be covered with a rigid, thick barrier such as glass or expensive encapsulation layers. However, in new findings published in the journal Science, Georgia Tech researchers have introduced what appears to be a universal technique to reduce the work function of a conductor. They spread a very thin layer of a polymer, approximately one to 10 nanometers thick, on the conductor’s

Volume: 007

Contents Research Stable Electrodes for Improving Printed Electronics

Researchers Study How to Avoid Charge Traps in Plastic Electronics

Selected Publications

Research Capabilities

People New Faculty

Baratunde Cola Wins PECASE Award

COPE Fellowship

Awards & Honors

Faculty & Management Directory

Events

Georgia Tech’s Bernard Kippelen and his team developed the first completely plastic solar cell. Photo Credit: Virginie Drujon-Kippelen

of dollars over the next 10 years, one challenge is in manufacturing at low cost in ambient conditions. In order to create light or energy by injecting or collecting electrons, printed electronics require conductors, usually calcium, magnesium or lithium, with a low work function. These metals are chemically very reactive. They oxidize and stop working if

surface to create a strong surface dipole. The interaction turns air-stable conductors into efficient, low-work function electrodes. The commercially available polymers can be easily processed from dilute solutions in solvents such as water and methoxyethanol.

6th Solvay~COPE Symposium on Organic Electronics

ICSM 2012

Georgia Tech-COPE Distinguished Lecture Series

Large-area Organic and Printed Electronics Conference (LOPE-C)

Hands on Future Tech - Minority Male Middle School Outreach Program

6th Southeast Meeting on Soft Materials

Event Calendar

Announcements New Industrial Affiliates: Cambridge Nanotech, Boeing, Beneq, and NextInput

COPE Student Advisory Council

Save the Date: COPE 10th Anniversary Celebration

Georgia Institute of Technology

New Faculty Tequila Harris

School of Mechanical Engineering Dr. Harris has been an Assistant Professor in the George W. Woodruff School of Mechanical Engineering at Georgia Institute of Technology since October 2006. Dr. Harris’ research is focused on exploring the connectivity between the functionality of nano- to macro- level films, components, and systems based on their manufacture or design and their life expectancy, thereby elucidating mechanisms by which performance or durability can be predicted. She is interested in using both simulations and experimentation to better understand this connectivity. By addressing complex fundamental problems, Dr. Harris aims to impact a plethora of industries, although applications of direct interest to her include energy (e.g., polymer electrolyte membrane fuel cells), electronics (e.g., organic electronics), and environmental (e.g., water). She has experience in developing systematic design and manufacturing methodologies for complex energy systems which directly involve material characterization, tooling design and analysis, computational and analytical modeling, experimentation, and system optimization. Currently her research projects focus on investigating the fundamental science associated with fluid transport, materials processing and design issues for energy/electronic/environmental systems. The Design and Manufacturing of Energy Systems (DAMES) Lab

John Reynolds

School of Chemistry & Biochemistry Dr. Reynolds is a Professor of Chemistry and Biochemistry and Materials Science and Engineering at the Georgia Institute of Technology with expertise in polymer chemistry.

Dong Qin

School of Materials Science and Engineering Dr. Qin is an Associate Professor in the School of Materials Science and Engineering, with an adjunct appointment with the School of Chemistry and Biochemistry, at Georgia Institute of Technology. She was born and raised in Shanghai, China. Her academic records include a BS in Chemistry from Fudan University, a PhD in Physical Chemistry with Professor Hai-Lung Dai from the University of Pennsylvania, a postdoctoral stint in Materials with Professor George M. Whitesides at Harvard University, and an MBA from the University of Washington. In her spare time, Dr. Qin enjoys freelance writing in Chinese. Dr. Qin began her independent career as a founding member of the Center for Nanotechnology at the University of Washington in Seattle, where she applied her scientific expertise to develop a number of multidisciplinary research initiatives with faculty engaged in research across disciplines (1997-2007). Dr. Qin was recruited by Washington University in St. Louis and played a big role as the Associate Dean for Research in the School of Engineering and Applied Science (2007-2011). Dr. Qin was the site director of the NSF-supported National Nanotechnology Infrastructure Network (NSF-NNIN) at Washington University - Nano Research Facility - with a strong commitment to provide unique capabilities at intersections of nanotechnology and public health and environment (20092011). In January 2012, Dr. Qin started her new appointment as an Associate Professor in the School of Materials Science and Engineering at Georgia Tech. She received her adjunct appointment with the School of Chemistry and Biochemistry in February 2012. Her research interests center on the frontiers that bridge traditional fields of chemistry and materials science, with a focus on peculiar properties and applications driven by materials and systems at the nanoscale. Her expertise includes nanomaterials, surface-enhanced Raman spectroscopy (SERS), soft lithography, self-assembly, colloidal physics and chemistry, and responsible development of nanotechnology. The Qin Lab

His research interests have involved electrically conducting and electroactive conjugated polymers for over 30 years, with work focused on the development of new polymers by manipulating their fundamental organic structure to control their optoelectronic and redox properties. His group has been heavily involved in developing new polyheterocycles, visible and infrared light electrochromism, along with light emission from polymer and composite LEDs (both visible and near-infrared) and light emitting electrochemical cells (LECs). Further work is directed towards using organic polymers and oligomers in photovoltaic cells. Reynolds obtained his M.S. (1982) and Ph.D. (1984) degrees from the University of Massachusetts in Polymer Science and Engineering, he has published over 300 peer-reviewed scientific papers, has 15 patents issued and ~25 patents pending, and served as co-editor of the “Handbook of Conducting Polymers”, published in 2007. He serves on the editorial board for the journals Applied Materials and Interfaces of the ACS, Macromolecular Rapid Communications, Polymers for Advanced Technologies, and the Journal of Macromolecular Science–Chemistry. The Reynolds Research Group

Researchers Study How to Avoid Charge Traps in Plastic Electronics by John Toon, Research News & Publications Office

Atlanta, GA (July 29, 2012) — Plastic electronics hold the promise of cheap, mass-produced devices. But plastic semiconductors have an important flaw: the electronic current is influenced by “charge traps” in the material. These traps, which have a negative impact on plastic light-emitting diodes and solar cells, are poorly understood.

“The comparison revealed that the traps in all materials had a very similar energy level.” However, a new study by a team of researchers from the University of Groningen and the Georgia Institute of Technology reveals a common mechanism underlying these traps and provides a theoretical framework to design trap-free plastic electronics. The results are presented in an advance online publication of the journal Nature Materials. Plastic semiconductors are made from organic, carbon-based polymers, comprising a tunable forbidden energy gap. In a plastic light-emitting diode (LED), an electron current is injected into a higher molecular orbital, situated just above the energy gap. After injection, the electrons move toward the middle of the LED and fall down in energy across the forbidden energy gap, converting the energy loss into photons. As a result, an electrical current is converted into visible light. However, during their passage through the semiconductor, a lot of electrons get stuck in traps in the material and can no longer be converted into light. In addition, this trapping process greatly reduces the electron current and moves the location where electrons are converted into photons away from the center of the device. “This reduces the amount of light the diode can produce,” explained Herman Nicolai, first author of the Nature Materials paper. The traps are poorly understood, and it has been suggested that they are caused by kinks in the polymer chains or impurities in the material. “We’ve set out to solve this puzzle by comparing the properties of these traps in nine different polymers,” Nicolai explained.

The Georgia Tech group, led by Professor Jean-Luc Bredas in the School of Chemistry & Biochemistry, investigated computationally the electronic structure of a wide range of possible traps. “What we found out from the calculations is that the energy level of the traps measured experimentally matches that produced by a water-oxygen complex,” said Bredas. Nicolai explains that “such a complex could easily be introduced during the manufacturing of the semiconductor material, even if this is done under controlled conditions.” The devices Nicolai studied were fabricated in a nitrogen atmosphere, “but this cannot prevent contamination with minute quantities of oxygen and water,” he noted. The fact that the traps have a similar energy level means that it is now possible to estimate the expected electron current in different plastic materials. And it also points the way to trapfree materials. “The trap energy lies in the forbidden energy gap,” Nicolai explained. This energy gap represents the difference in energy of the outer shell in which the electrons circle in their ground state and the higher orbital to which they can be moved to become mobile charge carriers. When such a mobile electron runs into a trap that is within the energy gap it will fall in, because the trap has a lower energy level. “But if chemists could design semiconducting polymers in which the trap energy is above that of the higher orbital in which the electrons move through the material, they couldn’t fall in,” he suggested. “In this case, the energy level of the trap would be higher than that of the electron.”

(continued on page 10)

New Industrial Affiliates: Cambridge Nanotech, Boeing, Beneq, and NextInput COPE has added a diversity of new companies to its Industrial Affiliates Program. Cambridge Nanotech (Cambridge, Massachusetts) joined in April 2012 and recently Boeing Aerospace (Seattle, Washington), Beneq (Vanaa, Finland) and NextInput (Atlanta, Georgia) also became members. Cambridge NanoTech delivers ALD systems capable of depositing ultra-thin films that are used in a wide variety of research and industrial applications. “By approaching material science development through the use of fundamental techniques such as Atomic Layer Deposition (ALD), scientists and engineers are able to improve device performance and produce novel applications” explained Ganesh Sundaram, Vice President of Technology at Cambridge NanoTech. “ALD is capable of depositing flexible, multifunctional materials at low deposition temperatures, which is ideal when integrating these materials into organic electronics and photonics.” Cambridge NanoTech first introduced ALD systems nine years ago and has an installed base of over 300 systems on six continents. Cambridge NanoTech’s ALD systems have become an important strategic solution for researchers and manufacturers that require highly conformal and uniform thin film oxides, nitrides, sulfides, and metals. Cambridge NanoTech plans co-host an ALD workshop with COPE in the spring at Georgia Tech. Boeing [NYSE: BA] is the world’s largest aerospace company and leading manufacturer of commercial jetliners and defense, space and security systems. A top U.S. exporter, the company supports airlines and U.S. and allied government customers in 150 countries. Boeing products and tailored services include commercial and military aircraft, satellites, weapons, electronic and defense systems, launch systems, advanced information and communications systems, and performance-based logistics and training.

“We’ve joined this center to have access to the state of the art conductive and electro-active technology base that has been assembled at Georgia Tech,” said Patrick Kinlen of Boeing Research & Technology Materials, Processes & Structures Technologies. “This technology has impact for Boeing in the area of conductive coatings, photovoltaics, electrochromics and energy storage.” Boeing Research & Technology is the advanced, central research and development organization of Boeing. It provides innovative technologies that enable the development of future aerospace solutions while improving the cycle time, cost, quality and performance of current aerospace products and services. Beneq Oy, based in Finland, is a supplier of equipment and coating technology for global markets. Beneq turns innovations into success by developing applications and equipment for cleantech and renewable energy fields, especially in glass, solar and emerging thin film markets. Coating applications include optics, barriers and passivation layers, as well as energy generation and conservation. Beneq also offers complete coating services. The coating applications of Beneq are based on two enabling nanotechnology platforms: Atomic Layer Deposition (ALD) and aerosol coating (nHALO®and nAERO®). NextInput is an Atlantabased technology development company focused on creating new methods of human-machine interaction. NextInput has developed force and pressure sensitive touch technologies based on MEMS and thin film sensors, an innovative new way of interacting with electronic devices. Our patent-pending technologies provide a tactile, force or pressure sensitive method of interfacing with virtually any electronic device.

The Industrial Affiliates Program at the Georgia Tech–COPE is open to corporations of any size that have an interest in the field of organic photonics and electronics. The program provides corporations with an opportunity to engage some of the brightest talent in the field, gain access to information on the state-ofthe-art research within COPE’s network, and receive timely news about the latest innovations at COPE. Learn More about the Program

The 6th Solvay~COPE Symposium on Organic Electronics The 6th Solvay~COPE Symposium on Organic Electronics took place on May 10-11, 2012 in Pittsburgh, Pennsylvania. The two-day event gathered a collection of academic and corporate representatives working in the field of organic materials and devices to discuss the latest research coming out of the lab and the newest product developments in emerging markets like printed electronics, photovoltaics, and organic light-emitting diodes (OLED) for displays and lighting. Plextronics Inc., an international technology company that specializes in printed solar, lighting, and other electronics and headquartered in Pittsburgh, served as host and organized the event along with Solvay and COPE. On the evening of May 9th Plextronics invited all symposium participants to a pre-conference reception coupled with laboratory tours of their facilities. Attendees got a jump-start on networking with their peers, while getting a first-hand look at some of the equipment where Plextronics develops their suite of products, examples of which were on display during the reception. The next morning, symposium attendees arrived at the Sheraton Station Square hotel in downtown Pittsburgh, where the technical portion of the symposium took place. The day started with welcoming addresses from Bernard Kippelen (Director of the Center for Organic Photonics and Electronics at Georgia Tech), Pierre Barthélemy (Solvay, Senior Vice President – Organic Electronics), and Andrew Hannah (CEO, Plextronics).

Mathieu Fenoll (right), a Research Scientist at Solvay, explains research that he conducted while he was a visiting Scientist at Georgia Tech to Ryan Murphy of Rhodia (left) at the 6th Solvay~COPE Symposium on Organic Electronics in Pittsburgh, PA.

During day one attendees heard presentations from Richard McCullough (Carnegie Mellon University), Kieran Reynolds (Eight19), Marie-Beatrice Madec (Solvay Interox), Zhenan Bao (Stanford University), Mike Hack (Universal Display Corporation), Gopalan Rajeswaran (Moser Baer Technologies), Natalie Stingelin (Imperial College London), Christer Karlsson

(Thin Film Electronics), John Reynolds (Georgia Tech), and Antonio Facchetti (Polyera). The day was capped with researchers and graduate students from Carnegie Mellon University, University of Pittsburgh, Georgia Tech, and Solvay presenting their latest research during the traditional poster session and reception. Day two featured presentations from David Bucknall (Georgia Tech), Vincent Thulliez (Solvay), Andrew Hannah (Plextronics), Larry Hough (Rhodia: Member of the Solvay Group), and Tobin Marks (Northwestern University). The day concluded with a panel discussion where industry speakers fielded questions from attendees, which was highlighted by a discussion about the future prospects for the industry. The 7th Solvay~COPE Symposium on Organic Electronics will take place in Bordeaux, France. Stay tuned for details. When: May 15-16, 2013 Where: Bordeaux, France Coming Soon: Event Details and Registration

ICSM 2012: International Conference on Science and Technology of Synthetic Metals The longest running conference series in the field of conducting and semiconducting organic materials, The International Conference on the Science and Technology of Synthetic Metals, ICSM-2012 took place in Atlanta from July 8 - 13, 2012. Hosted by Georgia Tech and co-chaired by Jean-Luc Brédas and Seth Marder, the conference was held at the downtown Hyatt Regency and attracted around 800 participants from 40 countries. Over the years, ICSM has become a premiere venue for discussion of the latest developments in the areas of organic electronics and photonics, from synthesis to characterization, computational modeling, device fabrication, and real-world applications. The next ICSM will take place in Turku, Finland, June 30 - July 5, 2014. For details visit www.icsm2014.fi.

Baratunde Cola Receives PECASE Award

Read more about Baratunde Cola in a Live Science interview Baratunde Cola is Engineering a Sustainable Future

by Matt Nagel, Georgia Tech Media Relations

The White House named Baratunde Cola, assistant professor in the George W. Woodruff School of Mechanical Engineering, one of 96 recipients of the Presidential Early Career Award for Scientists and Engineers (PECASE). The award is the highest honor bestowed by the United States government on engineering and science professionals in the early stages of their independent research careers. According to the White House, the PECASE awards embody the high priority the Obama Administration places on producing outstanding scientists and engineers to advance the nation’s goals, tackle grand challenges and contribute to the American economy. “My interests and accomplishments are shaped by the ethos of my family, friends and all of those who have supported and encouraged me,” said Cola, who is the director of the NanoEngineered Systems and Transport Lab (NEST). “I am thrilled to have an opportunity to represent them on this national stage. I feel honored to be considered in this group and to be able to share our discoveries of new ways to improve the conversion of waste heat to electricity with a wider audience. “

Awardees are selected for their pursuit of innovative research at the frontiers of science and technology and their commitment to community service as demonstrated through scientific leadership, public education or community outreach. According to the White House, Cola was selected for his outstanding research on energy conversion, nanoscale transport and materials; and for significant outreach and educational activities involving K-12 science and art students and teachers from disadvantaged minority communities. Cola believes that with jobs and energy arguably at the center of public discourse right now that his research on nanoengineered energy technologies is highly relevant, thus the possibilities are very exciting. “The challenges and opportunities of nanoscience and nanoengineering have attracted many great minds to these fields, which makes interactions with students and colleagues within the community very rewarding personally,” said Cola. “Most of all, I have found that the mix of energy and nanoengineering has opened wide the door to a multifaceted life as a teacher-researcher-entrepreneur, which is exactly where I want to be right now. “ White House Release

COPE Student Advisory Council Are you interested in participating in a COPE Student Advisory Council?

Tucker High School art students and Prof. Baratunde Cola of the Georgia Institute of Technology work together to image compost materials in a tabletop scanning electron microscope (SEM).

• COPE wants students involved in organizing and planning educational and social activities that bring students together. • If you are interested in participating in the new group, let us know here:

Student Advisory Council

COPE Fellowship The COPE Fellowship is awarded annually to 4 graduate students pursuing research in the field of organic photonics and electronics. Students perform research in the field of organic photonics and electronics and present their research at beginning of the Fall semester. The 2012 Award Recipients were: • Boyi Fu, ChBE (Advisor: Elsa Reichmanis), “Molecular Design, Synthesis, and Characterization of Benzothiadiazole-oligothiophene Based Low Bandgap Donor-Acceptor (D-A) Copolymers” • Laxman Pandey, Chemistry (Advisor: Jean-Luc Brédas), “The Low-lying Excited States of Donor-acceptor Copolymers: a Characterization From Tuned Long-range Corrected Density Functionals” • Jae Won Shim, ECE (Advisor: Bernard Kippelen), “Efficient Recombination Layers for Inverted Tandem Organic Solar Cells” • O’Neil Smith, Chemistry (Advisor: Seth Marder), “Probing Charge Injection Kinetics at the TCO-Organic Interface in Organic Photovoltaics” 2013 COPE Graduate Student Fellowship Applications will now be accepted for the 2013 COPE Fellowship. Students funded by this fellowship receive a $5,000 award to his/her existing stipend. Students get access to the COPE network, meet peers from other departments, and are encouraged to participate in various COPE activities such as the Distinguished Lecture Series and the COPE Open House. The Fellowship is open to graduate students with a Bachelor’s degree by the time the award begins. Applicants should have a superior academic record as demonstrated by a GPA of 3.5 or higher. Only students who have studied at Georgia Tech for at least two years, and engaged in research for at least one year, are eligible to apply. You must be a COPE student member. However, a Fellowship Application will be considered as an application for COPE membership.

Faculty Awards Jean-Luc Brédas • 2013 David Adler Award of the American Physical Society in Materials Physics Baratunde Cola • Presidential Early Career Award for Scientists and Engineers Award Michael Filler • National Science Foundation CAREER Award • CETL Class of 1934 Teaching Effectiveness Award Clifford Henderson • Intel Outstanding Researcher Award John Reynolds • 2012 Award of the American Chemical Society in Applied Polymer Science

Student Awards • • • •

Tom Bougher (Cola Group)- IGERT Fellowship Rebecca Hill (Marder Group) - IGERT Fellowship Nabil Kleinhenz (Reichmanis Group) - IGERT fellowship Abishek Mukund (Reichmanis Group) - President’s Undergraduate Research Award (PURA) • Parisa Pour Shahid Saeed Abadi (Cola Group) - Outstanding poster award in GT research and innovation conference

Special Announcements In February 2012, COPE received a 2012 Flexi Award and would like to take the opportunity to thank the faculty, staff, researchers, and students that make winning this award possible. Congratulations and Thank You! This award recognizes and honors outstanding contributions to the flexible and printed electronics industry through education. Judging was based on the quality of education, practical applicability, number of students completing the course, and degree of focus on flexible, printed electronics. The award was accepted by Dr. Bernard Kippelen, Director of the Center for Organic Photonics and Electronics. Read the full article - FlexTech Alliance Announces 2012 FLEXI Award Winners, Recognizes Flexible, Printed Electronics and Display Industry Achievements.

Apply for the 2013 COPE Fellowship Application Deadline: November 21, 2012

• Information • Apply Online

Tell us about your accomplishments. If you are a COPE faculty member or student, let us know about an award or honor that you received. Share Your Award/Honor. Awards and Honors appear in the Newsletter and on the COPE website.

The Georgia Tech-COPE

Distinguished Lecture Series Atlanta, GA— The Georgia Tech-COPE Distinguished Lecture Series concluded its Spring 2012 line-up with lectures from Dr. John Rogers of University of the Illinois at UrbanaChampaign and Dr. Takao Someya of the University of Tokyo. Both lecturers fascinated attendees with the their research advancements in flexible electronic devices. If you missed the lectures, watch the videos here. This fall promises to be as equally exciting as the Georgia Tech-COPE Distinguished Lecture Series continues with its third year of bringing internationally renowned scientists and engineers to share their latest breakthroughs and insights.

The series will start off on November 2, 2012 with Robert Street of the Palo Alto Research Center (PARC) in Palo Alto, California. Dr. Street will present a lecture entitled, “Disorder Effects in the Electronic Properties of Organic Solar Cells”. Dr. Street holds a Ph.D. and B.S. in physics, both from Cambridge University in England and he joined PARC in 1976. He holds 53 patents and has been honored with the American Physical Society David Adler Award and The American Institute of Physics prize for Industrial Applications of Physics. He has published more than 350 papers and articles and has served as Associate Editor of both the Journal of Materials Research and Solid State Science and Technology. He has also served on the National Research Council Committee for Material Science and Engineering, as well as the ICAMS (International Conference on Amorphous and Microcrystalline Semiconductors) Program Committee and International Advisory Committee. His research interests are in large-area electronic materials and devices, including amorphous silicon (a-Si), flat panel x-ray image sensors, and more recently, printed organic semiconductors, flexible electronics, nanowire devices, and solar cells. He is exploring printing technologies that could replace the photolithographic techniques traditionally used to create thin-film transistors; and solution-based organic materials to create large-area transistor and sensor arrays.

René Janssen will lecture on “Efficient Polymer Solar Cells” on January 25, 2013. Dr. Janssen is full professor in chemistry and physics at the Eindhoven University of Technology (TU/e) in Eindhoven, Netherlands. Dr. Janssen received his Ph.D. in 1987 from the TU/e for a thesis on electron spin resonance and quantum chemical calculations of organic radicals in single crystals. The research of his group focuses on functional π-conjugated molecules, macromolecules, nanostructures, and materials that may find application in advanced technological applications. Synthetic organic and polymer chemistry are combined with advanced time-resolved optical spectroscopy, electrochemistry, morphological characterization and the preparation of prototype devices to accomplish these goals. In recent years many of the activities have concentrated on organic and polymer solar cells. He has co-authored more than 390 scientific papers in this field and has supervised 38 PhD students. Dr. Janssen has been a visiting professor at the University of California Santa Barbara, the University of Angers and the University of Florida. In 2000 he was a co-recipient of the René Descartes Prize from the European Commission for outstanding collaborative research. He received the 2010 Research Prize of The Royal Institute of Engineers in The Netherlands for his work on Materials for Sustainable Energy. He currently serves as editor of “Organic Electronics”.

Attending a Lecture? Robert Street Palo Alto Research Center November 2, 2012 MoSE G011 @ 4pm RSVP

Please RSVP!

René Janssen Eindhoven University of Technology January 25, 2013 MoSE G011 @4pm RSVP

Video recordings of all Distinguished Lecture Series lectures can be viewed on the COPE website or by visiting our Youtube page.

Selected Publications A Universal Method to Produce Low–Work Function Electrodes for Organic Electronics. Zhou, Yinhua; Fuentes-Hernandez, Canek; Shim, Jaewon; Meyer, Jens; Giordano, Anthony J.; Li, Hong; Winget, Paul; Papadopoulos, Theodoros; Cheun, Hyeunseok; Kim, Jungbae; Fenoll, Mathieu; Dindar, Amir; Haske, Wojciech; Najafabadi, Ehsan; Khan, Talha M.; Sojoudi, Hossein; Barlow, Stephen; Graham, Samuel; Bredas, Jean-Luc; Marder, Seth R.; Kahn, Antoine and Kippelen, Bernard. SCIENCE 336, 327-332, 2012. Chiral Nematic Fluids as Masks for Lithography. Jeong, Hyeon Su; Kim, Yun Ho; Lee, Ji Sun; Kim, Jung Hyun; Srinivasarao, Mohan and Jung, Hee-Tae. ADVANCED MATERIALS 24, 381+, 2012. Surface Modification of Indium-Tin-Oxide Via Self-Assembly of a DonorAcceptor Complex: A Density Functional Theory Study. Li, Hong; Winget, Paul and Bredas, Jean-Luc. ADVANCED MATERIALS 24, 687+, 2012. Unification of Trap-limited Electron Transport in Semiconducting Polymers. H. T. Nicolai, M. Kuik, G. A. H.Wetzelaer, B. de Boer, C. Campbell, C. Risko, J. L. Brédas and P.W. M. Blom. NATURE MATERIALS 11, 882-887, 2012. Multimode Metal-insulator-metal Waveguides: Analysis and Experimental Characterization. Lin, Chien-I and Gaylord, Thomas K.. PHYSICAL REVIEW B 85, 2012.

Sliding on a Nanotube: Interplay of Friction, Deformations and Structure. Chiu, Hsiang-Chih; Ritz, Beate; Kim, Suenne; Tosatti, Erio; Klinke, Christian and Riedo, Elisa. ADVANCED MATERIALS 24, 2879-2884, 2012. Hybrid Rylene Arrays via Combination of Stille Coupling and C-H Transformation as High-Performance Electron Transport Materials. Yue, Wan; Lv, Aifeng; Gao, Jing;Jiang, Wei; Hao, Linxiao; Li, Cheng; Li, Yan; Polander, Lauren E.; Barlow, Stephen; Hu, Wenping; Di Motta, Simone; Negri, Fabrizia; Marder, Seth R. and Wang, Zhaohui. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY 134, 5770-5773, 2012. Closely Stacked Oligo(phenylene ethynylene)s: Effect of pi-Stacking on the Electronic Properties of Conjugated Chromophores. Jagtap, Subodh P.;Mukhopadhyay, Sukrit; Coropceanu, Veaceslav; Brizius, Glen L.; Bredas, Jean-Luc andCollard, David M.. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY 134, 7176-7185, 2012. Controlled Conjugated Backbone Twisting for an Increased Open-Circuit Voltage while Having a High Short-Circuit Current in Poly(hexylthiophene) Derivatives. Ko, Sangwon; Hoke, Eric T.; Pandey, Laxman; Hong, Sanghyun; Mondal, Rajib; Risko, Chad; Yi, Yuanping; Noriega, Rodrigo; McGehee, Michael D.; Bredas, Jean-Luc; Salleo, Alberto and Bao, Zhenan. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY 134,5222-5232, 2012. Room-temperature Metastability of Multilayer Graphene Oxide Films. Kim, Suenne;Zhou, Si; Hu, Yike; Acik, Muge; Chabal, Yves J.; Berger, Claire; de Heer, Walt; Bongiorno, Angelo and Riedo, Elisa. NATURE MATERIALS 11, 544549, 2012.

Spatially Modulating Interfacial Properties of Transparent Conductive Oxides: Patterning Work Function with Phosphonic Acid Self-Assembled Monolayers. Knesting, Kristina M.; Hotchkiss, Peter J.; MacLeod, Bradley A.; Marder, Seth R. andGinger, David S.. ADVANCED MATERIALS 24, 642+, 2012.

Tuning Delocalization in the Radical Cations of 1,4-Bis[4-(diarylamino) styryl]benzenes, 2,5-Bis[4-(diarylamino)styryl]thiophenes, and 2,5-Bis[4(diarylamino)styryl]pyrroles through Substituent Effects. Barlow, Stephen;Risko, Chad; Odom, Susan A.; Zheng, Shijun; Coropceanu, Veaceslav; Beverina, Luca;Bredas, Jean-Luc and Marder, Seth R.. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY 134, 10146-10155, 2012.

n-Doping of Organic Electronic Materials using Air-Stable Organometallics. Guo, Song; Kim, Sang Bok; Mohapatra, Swagat K.; Qi, Yabing; Sajoto, Tissa; Kahn, Antoine;Marder, Seth R. and Barlow, Stephen. ADVANCED MATERIALS 24, 699+, 2012.

Controlled Synthesis and Magnetic Properties of Bimagnetic Spinel Ferrite CoFe2O4 and MnFe2O4 Nanocrystals with Core-Shell Architecture. Song, Qing andZhang, Z. John. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY 134, 10182-10190, 2012.

Solution doping of organic semiconductors using air-stable n-dopants. Qi, Yabing; Mohapatra, Swagat K.; Kim, Sang Bok; Barlow, Stephen; Marder, Seth R. andKahn, Antoine. APPLIED PHYSICS LETTERS 100, 2012.

Highly Efficient Inverted Top-emitting Green Phosphorescent Organic Lightemitting Diodes on Glass and Flexible Substrates. Najafabadi, E.; Knauer, K. A.;Haske, W.; Fuentes-Hernandez, C. and Kippelen, B.. APPLIED PHYSICS LETTERS 101, 2012.

DNA-Programmed Modular Assembly of Cyclic and Linear Nanoarrays for the Synthesis of Two-Dimensional Conducting Polymers. Chen, Wen and Schuster, Gary B.. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY 134, 840-843, 2012. Prediction of Remarkable Ambipolar Charge-Transport Characteristics in Organic Mixed-Stack Charge-Transfer Crystals. Zhu, Lingyun; Yi, Yuanping; Li, Yuan; Kim, Eung-Gun; Coropceanu, Veaceslav and Bredas, Jean-Luc. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY 134, 2340-2347, 2012. Three-Dimensional Packing Structure and Electronic Properties of Biaxially Oriented Poly(2,5-bis(3-alkylthiophene-2-yl)thieno-[3,2-b]thiophene) Films. Cho, Eunkyung; Risko, Chad; Kim, Dongwook; Gysel, Roman; Miller, Nichole Cates;Breiby, Dag W.; McGehee, Michael D.; Toney, Michael F.; Kline, R. Joseph and Bredas, Jean-Luc. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY 134, 6177-6190, 2012. Stable Solution-Processed Molecular n-Channel Organic Field-Effect Transistors. Hwang, Do Kyung; Dasari, Raghunath R.; Fenoll, Mathieu; Alain-Rizzo, Valerie; Dindar, Amir; Shim, Jae Won; Deb, Nabankur; FuentesHernandez, Canek; Barlow, Stephen; Bucknall, David G.; Audebert, Pierre; Marder, Seth R. and Kippelen, Bernard. ADVANCED MATERIALS 24, 44454450, 2012.

Phosphodiesterase 4B Mediates Extracellular Signal-regulated Kinasedependent Up-regulation of Mucin MUC5AC Protein by Streptococcus pneumoniae by Inhibiting cAMP-protein Kinase A-dependent MKP-1 Phosphatase Pathway. Lee, Jiyun; Komatsu, Kensei; Lee, Byung Cheol; Lim, Jae Hyang; Jono, Hirofumi; Xu, Haidong;Kai, Hirofumi; Zhang, Z. John; Yan, Chen and Li, Jian-Dong. JOURNAL OF BIOLOGICAL CHEMISTRY 287, 2279922811, 2012. Crafting Semiconductor Organic-Inorganic Nanocomposites via Placing Conjugated Polymers in Intimate Contact with Nanocrystals for Hybrid Solar Cells. Zhao, Lei and Lin, Zhiqun. ADVANCED MATERIALS 24, 4353-4368, 2012. Effect of the Dielectric Constant of the Surrounding Medium and the Substrate on the Surface Plasmon Resonance Spectrum and Sensitivity Factors of Highly Symmetric Systems: Silver Nanocubes. Mahmoud, Mahmoud A.; Chamanzar, Maysamreza; Adibi, Ali and El-Sayed, Mostafa A.. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY 134, 6434-6442, 2012.

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(Stable Electrodes for Improving Printed Electronics, continued from page 1)

(Researchers Study How to Avoid Charge Traps in Plastic Electronics, continued from page 3)

“These polymers are inexpensive, environmentally friendly and compatible with existent roll-to-roll mass production techniques,” said Bernard Kippelen, director of Georgia Tech’s Center for Organic Photonics and Electronics (COPE). “Replacing the reactive metals with stable conductors, including conducting polymers, completely changes the requirements of how electronics are manufactured and protected. Their use can pave the way for lower cost and more flexible devices.”

The results of this study are therefore important for both plastic LEDs and plastic solar cells. “In both cases, the electron current should not be hindered by charge trapping. With our results, more efficient designs can be made,” Nicolai concluded.

To illustrate the new method, Kippelen and his peers evaluated the polymers’ performance in organic thin-film transistors and OLEDs. They’ve also built a prototype: the first-ever, completely plastic solar cell. “The polymer modifier reduces the work function in a wide range of conductors, including silver, gold and aluminum,” noted Seth Marder, associate director of COPE and professor in the School of Chemistry and Biochemistry. “The process is also effective in transparent metal-oxides and graphene.” COPE is a collaborative effort of Georgia Tech professors in the Colleges of Engineering, Sciences and the Ivan Allen College of Liberal Arts. The center is working on the next generation of electronic devices in order to save energy, reduce costs, increase national security and enhance the quality of the environment. Researchers from the groups of Georgia Tech professors Jean-Luc Brédas and Samuel Graham, as well as Princeton University Professor Antoine Kahn, also contributed to the new study. The research was funded in part through the Center for Interface Science: Solar Electric Materials, an Energy Frontier Research Center funded by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences under Award Number DE-SC0001084, by the STC Program MDITR of the National Science Foundation under Agreement No. DMR-0120967, and by the Office of Naval Research (Grant No. N00014-04-1-0120). The content is solely the responsibility of the principal investigators and does not necessarily represent the official views of the DOE, NSF and ONR.

The experimental work for this study was done in the Zernike Institute of Advanced Materials (ZIAM) at the faculty of Mathematics and Natural Sciences, University of Groningen, the Netherlands. The theoretical work to identify the nature of the trap was carried out at the School of Chemistry and Biochemistry and Center for Organic Photonics and Electronics at the Georgia Institute of Technology, Atlanta, USA. The work at the University of Groningen was supported by the European Commission under contract FP7-13708 (AEVIOM). The work at Georgia Tech was supported by the MRSEC program of the National Science Foundation under award number DMR-0819885. Citation: H. T. Nicolai, M. Kuik, G. A. H. Wetzelaer, B. de Boer, C. Campbell, C. Risko, J. L. Brédas and P. W. M. Blom. Unification of trap-limited electron transport in semiconducting polymers. Nature Materials, 11, 882-887, 2012. Published online: 29 July 2012 | DOI: 10.1038/NMAT3384

COPE participated and exhibited at LOPE-C 2012 on July 19-21 at Messe München (Munich, Germany). The convention covered the latest commercial and technological achievements in organic, inorganic and printed devices, systems and materials. LOPE-C represents the entire industrial value chain – from academic research to R&D to production to commercialization to end-user cultivation. The convention was marked by substantial growth: • 1,560 visitors – an increase of 36% • Visitors from 46 countries – an increase of 58% • 104 exhibitors from 17 countries – an increase of 14% • 3,500 sq. meters of exhibition space – an increase of 40% LOPE-C 2013 will again take place at Messe München. When: June 11-13, 2013 Where: ICM–International Congress Center Munich, Germany Information and Registration 10

Hands-On Future Tech – Minority Male Middle School Outreach Program by Keith Oden, Director of Diversity - School of Chemistry

Hands-On Future Tech is jointly hosted by the GT School of Chemistry and Biochemistry and the GT student chapter of NOBCChE (National Organization for the Professional Development of Black Chemists and Chemical Engineers). The Hands-On Future Tech event will take place on November 10, 2012 at Georgia Tech’s Molecular Science and Engineering (MoSE) building. The target audiences for this event are underrepresented minority 6th-8th grade boys. Organizers are expecting over 125 middle school boys to participate in “hands-on” demonstrations and other activities. Some of the demonstrations include solar powered cars, engineering concepts, robotics, chemical techniques such as DNA extractions, and solar cell and solar panel demonstrations. The demonstrations will be conducted by Georgia Tech college students, faculty, and industry professionals.

year, COPE will partner with organizers to support “Hands-On Future Tech 2012”, a STEM (Science, Technology, Engineering, and Math) education and diversity initiative. In addition to providing funding support for this important education and diversity initiative, COPE students volunteer by providing lab tours and demonstration teams.

The 6th Southeast Meeting on Soft Materials The Southeast Soft Materials initiative was the sixth in a series of workshops held once a year at Georgia Tech. Organizers were Professors Alberto Fernandez, Elisa Riedo and Daniel Goldman. The workshop brings together researchers with an interest in soft materials, molecular forces, biophysics, molecular electronics and fluid dynamics to discuss their work and explore collaborations. The 6th Southeast Meeting on Soft Materials, held on May 25, 2012, had participants from Georgia Tech, Emory, and Morehouse. The program included 36 short presentations and 4 invited speakers (David Pine, Keynote Speaker, New York University, Carlos Santamarina, Georgia Tech, Julio Boza, The Coca-Cola Company, and Sven Behrens, Georgia Tech).

Georgia Tech Chemistry graduate student Christopher Sutton demonstrates to student participants how a “solar powered car” is powered using photovoltaic cells at Hands on Future Tech in April, 2012. The bright high powered light provides the energy needed.

For more information about the “Soft Materials” community at Georgia Tech, please visit: http://www.softmaterials.gatech.edu

The purpose of this event is to make STEM disciplines and concepts understandable, relevant, interesting, and applicable in student’s everyday life. The program will include a college panel, and speakers that provided information on STEM careers, the necessary high school and college academic preparation, and the opportunities available in these areas. The program also includes a parent’s session, and STEM role models that discuss STEM careers and the opportunities available in these areas. Parents will be provided with information and application web links so their sons can participate in Georgia Tech summer and year-long programs in STEM areas. COPE continues to play a key role in providing support for valuable K-12 education and diversity initiatives. Again this 11

Conferences & Meetings where COPE is participating

Date

Event

Location

November 9-15

ASME 2012 International Mechanical Engineering Conference & Exposition

Houston, Texas

November 13-15

The 3rd International Forum for Heat Transfer

Nagasaki, Japan

November 25-30

MRS Fall Meeting

Boston, Massachusetts

On Campus Events organized by COPE

Date

Event

Location

October 29

COPE Seminar: Geoffrey Hutchison, University of Pittsburgh

MoSE Building, 3201A

November 2

Georgia-Tech Distinguished Lecture Series: Bob Street, PARC

MoSE Building, G011

December 6-7

Robert J. Silbey Memorial Symposium on Theory for Experimentalists

GTRI Conference Center

January 25

Georgia-Tech Distnguished Lecture Series: RenĂŠ Janssen

MoSE Building, G011

Spring, TBD

ALD Workshop with Cambridge Nanotech

MoSE Building

Spring, TBD

Affiliates Day

MoSE Building

Date

Event

Location

December 5-6

Printed Electronics USA 2012

Santa Clara, Califronia

January 29 - Feb 1

2013 Flexible Electronics and Displays Conference and Exhibit

Phoenix, AZ

April 16 - 18

Polymers in Photovoltaics 2013

Cologne, Germany

May 15-16

7th Solvay~COPE Symposium on Organic Electronics

Bordeaux, France

June 11-13

Large-area, Organic & Printed Electronics Convention (LOPE-C)

Munich, Germany

Industry Events

where COPE is participating

Save the Date COPE 10th Anniversary Celebration September 13, 2013 2013 marks the Center for Organic Photonics and Electronicsâ&#x20AC;&#x2122; 10th anniversary. To celebrate our history and set the course for our future we are inviting all of those who haven taken part in COPE over the years to join us for a day of networking, presentations, and celebration. Stayed tuned this fall for further details on a program which is expected to include a networking dinner, alumni reception, 10-year recap of COPE, and a vision for the next 10 years. COPE 10th Anniversary

Directory (Management & Faculty) Name

Title

Department Email

Adibi, Ali Bidstrup Allen, Sue Ann Brand, Oliver Brédas, Jean-Luc Bucknall, David Chang, GK Clark, Jennifer Cola, Baratunde Collard, David Curtis, Jennifer Durgin, Gregory Filler, Michael Gaylord, Tom Graham, Samuel Grover, Martha Harris, Tequila Henderson, Cliff Hernandez, Rigoberto Hunt, Bill Kippelen, Bernard Lawrence, Sharon Lin, Zhiqun Marder, Seth Martin, Jason Perry, Joseph Reichmanis, Elsa Reynolds, John Riedo, Elisa Sandhage, Ken Schuster, Gary Sherrill, David Srinivasarao, Mohan Tolbert, Laren Tsukruk, Vladimir Qin, Dong Ume, Charles Zhang, John

Professor Professor Associate Professor Director of Intl. Programs, Regents' Professor Professor Professor Associate Professor Assistant Professor Professor Assistant Professor Assistant Professor Assistant Professor Regents’ Professor Associate Professor Associate Professor Assistant Professor Associate Professor Associate Professor Professor Director, Professor Program Manager Associate Professor Associate Director, Regents’ Professor Marketing Manager Associate Director, Professor Professor Professor Associate Professor B. Mifflin Hood Professor Vasser Woolley Professor Professor Professor Regents' Professor Professor Associate Professor Professor Professor

ECE ali.adibi@ece.gatech.edu BH 105 ChBE sue.allen@carnegie.gatech.edu ES&T 1370 ECE oliver.brand@ece.gatech.edu MIRC 219 Chem & Biochem jean-luc.bredas@chemistry.gatech.edu MoSE 2100M MSE david.bucknall@ptfe.gatech.edu MRDC 4503 ECE geekung.chang@ece.gatech.edu Centergy 5120 Public Policy jennifer.clark@gatech.edu DM Smith 218 ME baratunde.cola@me.gatech.edu MRDC 2207 Chem & Biochem david.collard@chemistry.gatech.edu MoSE 2100J Physics jennifer.curtis@physics.gatech.edu MoSE G024 ECE gregory.durgin@ece.gatech.edu VL E511 ChBE michael.filler@chbe.gatech.edu ES&T L1218 ECE tom.gaylord@ece.gatech.edu VL W419 ME sam.graham@me.gatech.edu Love 339 ChBE martha.grover@chbe.gatech.edu ES&T 1228 ME tequila.harris@me.gatech.edu Marc 436 ChBE cliff.henderson@chbe.gatech.edu ES&T 1226 Chem & Biochem rigoberto.hernandez@chemistry.gatech.edu MoSE 2100L ECE bill.hunt@ece.gatech.edu MIRC 221 ECE kippelen@ece.gatech.edu MoSE 4239 ECE sharon.lawrence@ece.gatech.edu MoSE 4100C MSE zhiqun.lin@mse.gatech.edu MoSE 3100K Chem & Biochem seth.marder@chemistry.gatech.edu MoSE 1100M ECE jason.martin@chemistry.gatech.edu MoSE 4100C Chem & Biochem joe.perry@chemistry.gatech.edu MoSE G209B ChBE elsa.reichmanis@chbe.gatech.edu ES&T 1230 Chem & Biochem reynolds@chemistry.gatech.edu MoSE 2120B Physics elisa.riedo@physics.gatech.edu Howey N107 MSE ken.sandhage@mse.gatech.edu MoSE 3100L Chem & Biochem schuster@gatech.edu Boggs 1-35 Chem & Biochem david.sherrill@chemistry.gatech.edu MoSE 2100N Chem & Biochem mohan.srinivasarao@ptfe.gatech.edu MRDC 1 4506 Chem & Biochem laren.tolbert@chemistry.gatech.edu MoSE 1100L MSE vladimir@mse.gatech.edu MoSE 4100K MSE dong.qin@mse.gatech.edu MoSE 3100N ME charles.ume@me.gatech.edu Marc 453 Chem & Biochem john.zhang@chemistry.gatech.edu MoSE 1100N

Office

Research Capabilities Broadband Transient Absorption Spectroscopy • Monitoring of transient changes in optical properties to provide broadband spectral information (300 nm – 1.7 µm) and ultrafast temporal resolution (from milliseconds down to femtoseconds) • Evaluation of the charge-transfer/recombination kinetics in potential photovoltaic materials • Generation of non-linear absorption spectra of target organic materials that could be used in all-optical signal processing applications Nonlinear Optical Spectroscopy • Femtosecond-pulsed Z-scan and degenerate four-wave mixing for absolute determination of third-order optical nonlinearities • Determination of molecular nonlinearities as a function of chemical structure variation Microfabrication • Patterning of materials with true three-dimensional (3D) spatial resolution including photonic crystals, microchannel and microfluidic devices, and biocompatible templates Material Synthesis and Purification • Wet chemistry laboratory covering over 2000 sq ft, including 25 fume hoods, and containing state-of-the-art equipment Physical, Chemical, and Optical Material Characterization • Gas chromatograph-mass spectrometry • High-pressure liquid chromatography-mass spectrometry

• • • • • •

UV/VIS/NIR spectrophotometry Spectrofluorimetry FT-IR spectrometry Electrochemistry Thermogravimetric analysis Thermal analysis of materials using differential scanning calorimeter (Q200, TA Instruments) • Gas permeation chromatography for the measurement of molecular weights and molecular weight distributions of polymers Surface Analysis • FT-IR characterization techniques that are surface-sensitive or suitable for thin film analysis such as specular reflectance, diffuse reflectance, attenuated total reflectance, grazing angle specular reflectance • Atomic Force Microscopy (AFM) using an Agilent 5600LS for the characterization of surface properties through a wide range of imaging techniques: topography in contact or tapping mode, scanning tunneling microscopy (STM), lateral force microscopy (LFM), electric force microscopy (EFM), Kelvin force microscopy, piezo-force microscopy, fluid immersed imaging, and for electrochemical microscopy of samples, and the system can be used as a nanolithography tool • X-ray photoelectron spectrometry (XPS) using an Axis Ultra HSA, Kratos, characterized by high-energy resolution and high sensitivity, for the determination of elemental composition of surfaces with surface mapping capabilities and an integrated ultraviolet photoelectron spectroscopy (UPS) unit

Director’s Note Thank you for taking the time to read our newsletter that highlights some of the research, educational, and outreach activities of COPE. In addition to learning about some highlights from the past year, we hope that you use the newsletter as a resource for previewing what will be happening in the near future so that you can participate in many of the activities and programs that COPE offers. Thus far 2012 has been an exciting year, and we are pleased to announce that Georgia Tech has renewed the institutional support for COPE through FY 2015. We are thankful and pleased that the Executive Vice President for Research and the Deans of the Colleges of Sciences and Engineering continue to invest into our Center and recognize its benefits to the Georgia Tech community. Faculty membership of COPE has now grown to 35 faculty members from seven different schools. We are pleased to welcome the newest faculty members; Tequila Harris from the School of Mechanical Engineering, Dong Qin from the School of Materials Science and Engineering, and John Reynolds from the School of Chemistry & Biochemistry. A special congratulations goes to John Reynolds for winning the ACS Award in Applied Polymer Science. John is a recognized leader in his field and we are honored to count him among COPE’s faculty. As COPE continues to expand its horizons, the industry of printed and organic electronics continues to advance. Growth in the field is exhibited by attendance at conferences like LOPE-C, which saw an increase in visitors of 36% year-over-year. As the number of companies and people involved in the industry grows, COPE is committed to playing a leading role. Strengthening interactions and partnerships between COPE and industry continues to be one of our strategic goals. I firmly believe that such interactions augment the quality of the training of our students and help us develop technology innovations that address some of the world’s toughest challenges. Thus, we welcome and thank the new companies and their representatives that have joined our industrial affiliates program; Boeing, Beneq, Cambridge Nanotech, and NextInput. We look forward to having you as a part of the Georgia-Tech COPE family and working with you over the coming years. On the research front, we made some research breakthroughs that include turning air stable conductors into efficient, low work-

function electrodes using a polymer modifier. This universal technique is one example of how our collaborative research efforts can create technology that can potentially improve printed electronic devices. The Georgia Tech-COPE Distinguished Lecture Series continues as part of our efforts to bring world-renowned scientists and engineers to campus to share their expertise. Earlier this year we had the pleasure of hosting John Rogers and Takao Someya who are making great strides in developing flexible electronic devices. Soon we will hear from Robert Street of PARC and René Janssen of Eindhoven University about their latest research on solar cells. Please join us for these lectures and the networking receptions that follow. As 2013 approaches, we are reminded that COPE has been a part of the Georgia Tech community for nearly a decade. Over that time period there have been numerous faculty, staff, students, and researchers that have played a role in shaping COPE into a Georgia Tech hub for organic photonics and electronics and an internationally recognized center for research, education, and innovation. We plan to celebrate this ten-year milestone by bringing together all of our constituents—past and current to campus to celebrate with us on September 13, 2013. Please save this date, and I sincerely hope that all alumni, faculty, students, scientists, partners, and research sponsors will join us for a day of networking, reviewing what COPE has accomplished, and setting the course for an exciting next decade.

Sincerely,

Bernard Kippelen Director, COPE

Credits Editors:

Stephen Barlow, Jean-Luc Brédas, Veronique Brédas, Dawn Franklin, Bernard Kippelen, Sharon Lawrence, Seth Marder, Jason Martin, Joe Perry

Design & Production:

Jason Martin

Center for Organic Photonics & Electronics Georgia Institute of Technology Molecular Science & Engineering Building 901 Atlantic Drive, Suite 4100C Atlanta, GA 30332-0400

cope.gatech.edu