Clelio Ferreira Leite: Renewable Energy
Clelio Ferreira Leite is a high tech entrepreneur who is currently the Chief Executive Officer at Vortex Ltd in Lisbon, Portugal. But he is also engaged in ongoing academic pursuits. Clelio Ferreira Leite is currently engaged in Ph.D. studies at the University of Coimbra, where he is researching dye sensitized solar cells. Dye sensitized solar cells, Clelio Ferreira Leite says, are a kind of solar cell that can be made from cheap materials. They are different from other kinds of solar cells because the way they handle electron transport, light absorption, and hole transport. There have been great strides forward in the design of electrolytes and dyes for dye-sensitized solar cells recently, and these have led to new levels of power-conversion efficiencies, all of which holds great promise for the further improvement of solar energy technology. The goal of any new solar cell technology, says Clelio Ferreira Leite, is to reach a cost-per-watt level that has grid parity compared to traditional fossil fuel technologies, so that they can compete against other, existing photovoltaic technologies. Clelio Ferreira Leite believes in the importance of dye sensitized solar cells as an improvement on existing photovoltaic technology. And he believes more generally in the importance of developing renewable energy resources, across the board. The side effects of burning fossil fuels include the creation of carbon dioxide, which is the number one contributor of greenhouse gas that is leading to global warming. And the impact of global warming, Clelio Ferreira Leite says, is extensive. Because fossil fuels are not renewable and are in limited supply, the urgency of developing renewable and sustainable energy resources is obvious, says Clelio Ferreira Leite. There really is no two ways about it. There is only a limited supply of fossil fuels and the world is rapidly depleting it. Alternative energy sources hold great promise, Clelio Ferreira Leite believes, but the fact is that they currently only account for about seven percent of the world's energy needs. Nuclear energy supplies even less of the world's energy, only about six percent, but it isn't likely to be developed much in the future because of widespread public opposition. Clelio Ferreira Leite says that no one really knows for certain when the last drop of oil will be used up. But he believes that sustainable energy sources like solar, wind and water are a viable solution to the problem. All you need is plenty of sunshine, running water, or wind, and the availability of each, of course, depends on where you live. The goal is to capture and harness the power of these sources and convert it into useable electricity in the safest and most effective way possible. Clelio Ferreira Leite is confident that there is more than enough of these renewable sources to supply all of the world's energy needs. The challenge, however, is to make it feasible and cost-effective.
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