Thin Film Solar Cells

Thin Film Solar Cells

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qYou, 0 Sun, are the eye of the world You are the soul of all embodied beings You are the source of all creatures You are the discipline of all engaged in workq - Translated from Mahabharata 3rd Century BC Today, energy is the lifeline and status symbol of qcivilizedq societies. All nations have therefore embarked upon Research and Development pro grams of varying magnitudes to explore and effectively utilize renewable sources of energy. Albeit a low-grade energy with large temporal and spatial variations, solar energy is abundant, cheap, clean, and renewable, and thus presents a very attractive alternative source. The direct conver sion of solar energy to electricity (photovoltaic effect) via devices called solar cells has already become an established frontier area of science and technology. Born out of necessity for remote area applications, the first commercially manufactured solar cells - single-crystal silicon and thin film CdS/Cu2S - were available well over 20 years ago. Indeed, all space vehicles today are powered by silicon solar cells. But large-scale terrestrial applications of solar cells still await major breakthroughs in terms of discovering new and radical concepts in solar cell device structures, utilizing relatively more abundant, cheap, and even exotic materials, and inventing simpler and less energy intensive fabrication processes. No doubt, this extraordinary challenge in R/D has led to a virtual explosion of activities in the field of photovoltaics in the last several years.If the solar cell is exposed to AMI solar illumination at normal incidence (1 kW m~: ) and it has a 10% conversion efficiency, the 1 nr of cell area ... These realities led Ehrenreich and Martinaquot;1 to remark that aquot;the naive impatience of some solar advocates to deploy solar cells ... However, the open-circuit voltage that is available is determined by the bandgap and is, for optimally designed devices, about halfanbsp;...

Title:Thin Film Solar Cells
Author:K.L. Chopra, S.R. Das
Publisher:Springer Science & Business Media - 1983-07-31


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