Surface recombination velocity of electron

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SUMMARY

The surface recombination velocity of electrons and holes at a metal-semiconductor contact varies based on the specific details of the contact and the materials involved. It is established that electron and hole recombination velocities differ, particularly in ferromagnetic contacts, which impede minority spin recombination. Ambipolar transport, where both charge carriers contribute simultaneously, is uncommon. Experimental benchmarking is essential for accurate analysis of surface recombination velocities, as theoretical values are often uncertain.

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  • Understanding of semiconductor physics
  • Familiarity with metal-semiconductor contacts
  • Knowledge of charge carrier dynamics
  • Experience with experimental benchmarking techniques
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  • Research the impact of ferromagnetic contacts on minority carrier recombination
  • Study the principles of ambipolar transport in semiconductors
  • Explore methods for experimental benchmarking of surface recombination velocities
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Researchers, semiconductor physicists, and engineers involved in the design and analysis of metal-semiconductor interfaces and those focused on optimizing charge carrier transport in electronic devices.

sarah1
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at the metal semiconductor contact the transport of minority carriers is describe by surface recombination velocity, what s the surface recombination velocity for electron and hole at the same contact?
 
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I'm not entirely certain that I understand the meaning of "recombination velocity" but if you mean what is the velocity of charge carriers that are recombining then it would be the Fermi velocity.
 
It has nothing to do with Fermi velocity. And Fermi velocity has nothing to do with recombination either...
To the OP: The surface recombination velocity depends on the details of the contact. Usually electron and hole velocities are different depending on the type of contact, and the materials involved.

For instance, a ferromagnet contact will make it harder for the minority spins to recombine at the surface...

Usually though, transport is well described by either holes or electrons, ambipolar transport (where both hole and electron conduction happen at the same time) being a rare phenomenon.

Most of the time, since no one exactly knows the details of the contact, experimental benchmarking is the way to go if you are trying to get a number or do an analysis.
 

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