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The Theory of Sensitized Fluorescence in Solids
Author(s) -
Golubov S. I.,
Konobeev Yu. V.
Publication year - 1975
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/pssb.2220710241
Subject(s) - acceptor , representation (politics) , fluorescence , phonon , excitation , spectral line , range (aeronautics) , impurity , molecule , absorption (acoustics) , atomic physics , emission spectrum , chemistry , absorption spectroscopy , molecular physics , physics , materials science , optics , quantum mechanics , politics , political science , law , composite material
The widely used Förster‐Galanin‐Dexter's (FGD) procedure of representation of the electronic excitation energy‐transfer rate between donor and acceptor impurity molecules, imbedded in small concentration in molecular crystals, is discussed by the overlap, integral of their light emission and absorption spectra. It is shown that this representation is only an approximative one, therefore a correction factor to the optical spectra overlap integral is given. This correction factor depends on the distance between donor and acceptor molecules and has a longer range in the case of the interaction of the donor and acceptor electronic excitations with acoustic phonons as compared to the interaction with optical phonons. The validity conditions of the representation mentioned above are discussed in detail.