Calculating Material Bandgap Using Quantum Theory

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SUMMARY

The discussion focuses on calculating the material bandgap using quantum theory, specifically utilizing the formula E = hc/eλ. Participants confirm that to find the bandgap for materials absorbing photons shorter than 500nm, one must substitute the constants: Planck's Constant (h), the speed of light (c), and the charge of an electron (e) into the equation. The consensus is that this calculation is straightforward and can be executed by directly inputting the relevant values.

PREREQUISITES
  • Understanding of quantum theory principles
  • Familiarity with Planck's Constant (h), speed of light (c), and electron charge (e)
  • Basic knowledge of photon energy calculations
  • Ability to perform unit conversions for wavelength measurements
NEXT STEPS
  • Research the implications of bandgap energy on material properties
  • Explore advanced quantum mechanics concepts related to photon interactions
  • Learn about different methods for measuring bandgap in semiconductors
  • Investigate the applications of materials with specific bandgap values in electronics
USEFUL FOR

Physicists, materials scientists, and engineers involved in semiconductor research and development, as well as students studying quantum mechanics and photonics.

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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.
 
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What are your thoughts on this?
 
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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