a. The band gap between the valence and the conduction bands in zinc oxide (ZnO) is 3.2

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a. The band gap between the valence and the conduction bands in zinc oxide (ZnO) is 3.2 eV. Suppose an electron in the conduction band combines with a hole in the valence band and the excess energy is released in the form of electromagnetic radiation. Find the maximum wavelength that can be emitted in this process.

b. Suppose the energy liberated in the recombination of a hole-electron pair is converted into electromagnetic radiation. If the maximum wavelength emitted is 820 nm, what is the band gap ?

c. Find the maximum wavelength of electromagnetic radiation which can create a hole—electron pair in germanium. The band gap in germanium is 0.65 eV.

Posted Date: Nov 06, 2021 09:27 AM

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a. The band gap between the valence and the conduction bands in zinc oxide (ZnO) is 3.2

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a Given Band gap 32 eV Ehc124232 or3881 nm b Given Wavelengt... View the full answer

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