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Charge Transfer at High Excitation Power of Solids
Author(s) -
Mikhelashvili M.S.,
Kapinus E.I.
Publication year - 1993
Publication title -
israel journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.908
H-Index - 54
eISSN - 1869-5868
pISSN - 0021-2148
DOI - 10.1002/ijch.199300024
Subject(s) - chemistry , excitation , quenching (fluorescence) , charge (physics) , atomic physics , excited state , electron transfer , volume (thermodynamics) , electron , molecule , nonlinear system , analytical chemistry (journal) , molecular physics , fluorescence , photochemistry , thermodynamics , physics , organic chemistry , quantum mechanics , chromatography
Electron transfer between excited donor molecules followed by the back reaction is treated theoretically for a solid solution at high excitation power. An expression for the average donor cation probability P + (t) is derived. Calculations of the time dependence for P + (t) are presented. The results indicate that the maximum value of P + (t) in the nonlinear quenching process is less than the corresponding values of P + (t) for the linear quenching at a low excitation power due to the depletion of the acceptors with time t. The restriction of the reaction volume slows down the charge separation if the back charge transfer takes place.