Photoelectric field emission of electrons: Photon assisted tunneling

Sodha, M. S.; Dixit, A.; Srivastava, S.
June 2009
Applied Physics Letters;6/22/2009, Vol. 94 Issue 25, p251501
Academic Journal
This note is a discussion of the enhancement in electric field emission of electrons from a plane metallic surface on irradiation by light. The enhancement in the tunneling coefficient of an electron by absorption of a photon and the consequent increase in the field emission current has been evaluated. A discussion of the results and possible applications concludes the presentation. In particular it is suggested that this phenomenon may be an explanation for the observed increase in photoelectric current with increasing magnitude of negative potential of lunar dust grain simulants.


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