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On conversion of luminescence into absorption and the van Roosbroeck-Shockley relation
Applied Physics Letters
The problem of conversion of experimentally measured luminescence spectrum into the absorption cross section is revisited. The common practice of using the van Roosbroeck-Shockley (or Kubo-Martin-Schwinger or Kennard-Stepanov) relation in this context is incorrect because luminescence from semiconductors is essentially all due to the spontaneous emission component of the recombination of carriers distributed far-from-equilibrium. A simple, physically consistent, and practical prescription fordoi:10.1063/1.4721495 fatcat:mcnkr3p2krchlcasfk65szig5e