Silicon has a band gap of 1.1 eV at room temperature. (a)
Chapter , Problem 12.71(choose chapter or problem)
Silicon has a band gap of 1.1 eV at room temperature. (a) What wavelength of light would a photon of this energy correspond to? (b) Draw a vertical line at this wavelength in the figure shown, which shows the light output of the Sun as a function of wavelength. Does silicon absorb all, none, or a portion of the visible light that comes from the Sun? (c) You can estimate the portion of the overall solar spectrum that silicon absorbs by considering the area under the curve. If you call the area under the entire curve 100%, what approximate percentage of the area under the curve is absorbed by silicon? x 200 600 1000 Wavelength (nm) 1400 1800 2200 2600 3000 Visible Infrared Ultraviolet Solar spectrum at sea level Solar spectrum outside atmospher
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