What semiconductor materials would be more suitable for a single junction pv device for ground or roof based applications using absorption data for four semiconductor materials. Assume typical solar spectrum AM 1.5, and that materials have comparable absorption coefficients. 2. Based on data, can you suggest a photovoltaic devices with higher conversion efficiency than the one discussed in number 1? Explain your answer

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Photoelectric

The photoelectric effect occurs when light (or similar incident radiation, including X-rays) falls on material together with a metal plate and causes it to emit electrons. The discovery of the photoelectric effect led to important new theories (and to a Nobel Prize for Albert Einstein). Photoelectric cells, or photocells, are utilized in burglar-alarm light detectors and garage-door openers (each employs a through-beam of light this is broken when something movements throughout it), and also to play soundtracks on film movies (in which a light beam shines through the soundtrack encoded at the film and is "read" with the aid of the photocells).