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Selection Rules and Probabilities of Exciton–Exciton Collisions
Author(s) -
Culík F.
Publication year - 1997
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/1521-3951(199701)199:1<135::aid-pssb135>3.0.co;2-f
Subject(s) - exciton , brillouin zone , biexciton , conduction band , condensed matter physics , electron , isotropy , physics , collision , electron hole , atomic physics , valence band , valence (chemistry) , quantum mechanics , band gap , computer security , computer science
Abstract Selection rules are summarized for a mutual collision of two Wannier‐Mott excitons which produces one free hole and one free electron. Calculation of probabilities per second of the collision: exciton + exciton → electron + hole in a perfect nonmetallic crystal for slow excitons in 1s and 2p states with isotropic effective mass of electron and hole has been performed assuming that the conduction band minimum and the valence band maximum are localized at the center of the Brillouin zone.