Within the two-channel model of recombination luminescence, the dependence of recombination parameters on the initial distance between the electron-hole pair components was obtained. Taking into account Coulomb attraction in the electron-hole pair, the quantum yield and the recombination rate were calculated. The suggested model was shown to introduce substantial corrections into the results of calculations based on the model of a "black sphere" with a radius equal to the Onsager radius.
$^1$Department of Optics and Spectroscopy, Faculty of Physics, Moscow State University, Leninskie Gory, Moscow, 119992, Russia
$^2$Research Center for Technological Lasers, Russian Academy of Sciences
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