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homework 12 solutions

039 ev donor level filled vb 4 from spring 2007 final

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Unformatted text preview: gap of 0.039 eV, the electrons can be easily excited into the conducing band from donor level. These electrons can move in response to an applied voltage. (b) Pure Si has the higher electrical resistivity because the band gap is high. Eg = 1.12 eV Conduction Band 0.039 eV Donor level Filled VB 4. (From spring 2007 final): The (room temperature) gap energy of five materials is given in the adjacent table. A. Which of these would you classify as a conductor, a semiconductor, or an insulator? Briefly justify your answer. B. Suppose ultraviolet light with a wavelength of...
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