CdS has a band gap of 2.4 eV. If large crystals of CdS are illuminated with ultraviolet

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CdS has a band gap of 2.4 eV. If large crystals of CdS are illuminated with ultraviolet light, they emit light equal to the band gap energy.
(a) What color is the emitted light?
(b) Would appropriately sized CdS quantum dots be able to emit blue light?
(c) What about red light?
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Chemistry The Central Science

ISBN: 978-0321696724

12th edition

Authors: Theodore Brown, Eugene LeMay, Bruce Bursten, Catherine Murphy, Patrick Woodward

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