Bimolecular Recombination Kinetics of an ExcitonTrion Gas

Report No. ARL-TR-7355
Authors: Frank Crowne and A Glen Birdwell
Date/Pages: July 2015; 26 pages
Abstract: This report discusses the use of rate equations to describe kinetic processes in highly photoexcited semiconductors. In this description, the pairs of electrons and holes generated by photons from the laser illumination form a multicomponent plasma whose time evolution is governed by gas dynamics and recombination processes, leading to a variety of secondary components such as neutral excitons and so-called trions, which consist of exciton–electron and exciton–hole bound states. The recombination is modeled as bimolecular for all carrier species, allowing the system of rate equations to be simulated numerically.
Distribution: Approved for public release
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Last Update / Reviewed: July 1, 2015