Triplet exciton trapping in p‐terphenyl crystals studied by delayed fluorescence and phosphorescence | Zendy

Takase T. | Zendy; Morikawa E. | Zendy; Kotani M. | Zendy

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Triplet exciton trapping in p‐terphenyl crystals studied by delayed fluorescence and phosphorescence

Author(s) -

Takase T.,

Morikawa E.,

Kotani M.

Publication year - 1983

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.2221150134

Subject(s) - phosphorescence , annihilation , exciton , fluorescence , terphenyl , trapping , photochemistry , chemistry , materials science , atomic physics , molecular physics , physics , optics , condensed matter physics , nuclear physics , ecology , organic chemistry , biology

Triplet exciton trapping in p‐terphenyl crystals is investigated by delayed fluorescence and phosphorescence. Trap depth ((2800 ± 100) cm −1 ) and concentration (10 −6 mol/mol) are deduced from the temporal behaviour of delayed fluorescence. The same trap is also found in the phosphorescence spectrum. The bimolecular annihilation rate constant between free and trapped excitons (1 × 10 −13 cm 3 s −1 ) is found to be orders of magnitude smaller than that for free—free annihilation.

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