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Influence of Secondary Excitons in Intensity and Decay of Phosphorescence in Doped Benzophenone Single Crystals
Author(s) -
Melnik V. I.,
Nelipovich K. I.,
Faidysh A. N.,
Shpak M. T.,
Yankovskaya L. B.
Publication year - 1982
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.2221120210
Subject(s) - phosphorescence , benzophenone , impurity , doping , photochemistry , exciton , excitation , materials science , molecule , triplet state , chemistry , optoelectronics , optics , fluorescence , physics , condensed matter physics , organic chemistry , quantum mechanics
Spectroscopic and kinetics data for the phosphorescence of benzophenone crystals doped with deuteronaphthalene, naphthalene, and α‐bromonaphthalene are analyzed. It is established that the duration of the delayed excitonic phosphorescence depends substantially on τ of the impurity triplet states at T > 170 K. The results obtained are treated in terms of the thermal detrapping of impurity molecule excitation to the triplet excitonic band of the host.