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CdTe (cadmium telluride) is one type of material used in photovoltaic cells to generate energy. In...

CdTe (cadmium telluride) is one type of material used in photovoltaic cells to generate energy. In such a cell, the longest wavelength photon that will produce an electric current is 850 nm. The kinetic energy of the photoelectrons are converted (by collisions) into wasted heat. If the average wavelength of incoming light is 600 nm, what fraction of incoming light energy can be used to generate electrical energy, i.e. is not wasted as heat?

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