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Homework Help: Calc bandgap

  1. Aug 25, 2010 #1
    Quantum theory says that the energy, E , (in eV) of a photon of wavelength λ is E = hc/eλ, where h is Planck's Constant, c is the velocity of light and e is the charge on an electron. Calculate the bandgap of a material which absorbs electrons shorter than 500nm.
  2. jcsd
  3. Aug 25, 2010 #2


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    What are your thoughts on this?
  4. Aug 27, 2010 #3
    This one's easy. Just plug in all the numbers and you have your bandgap. Then use the values for the next two parts to the question.
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