Belowis a typical, very broad light absorption spectrum for a semiconductor. Not

Question

Belowis a typical, very broad light absorption spectrum for a semiconductor. Note that wavelength increases moving left to right across the x-axis. Refer to this spectrum to answer the following questions:

(A) Which wavelength of light (A, B, or C) has an energy which matches the band gap energy of the semiconductor? (2 pts)

(B) Which wavelength of light (A, B, or C) would be emitted when electrons in this semiconductor’s conductance band fall to its valence band? (2 pts)

Explanation / Answer

Ans (A) A and C

Ans(B) B

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