On conversion of luminescence into absorption and the van Roosbroeck-Shockley relation

Rupak Bhattacharya, Bipul Pal, Bhavtosh Bansal
2012 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 for
more » ... nverting the luminescence spectra into absorption is presented and its relation to the so-called nonequilibrium generalization of the van Roosbroeck-Shockley relationship is discussed.
doi:10.1063/1.4721495 fatcat:mcnkr3p2krchlcasfk65szig5e