Pressure Modulation of Exciton Fission in Tetracene | Zendy

Whitten W. B. | Zendy; Arnold S. | Zendy

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Pressure Modulation of Exciton Fission in Tetracene

Author(s) -

Whitten W. B.,

Arnold S.

Publication year - 1976

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.2220740143

Subject(s) - tetracene , singlet fission , exciton , fission , singlet state , fluorescence , atomic physics , materials science , chemistry , condensed matter physics , physics , nuclear physics , photochemistry , anthracene , optics , excited state , neutron

The fluorescence quantum efficiency of tetracene crystals is found to increase rapidly with pressure. This behavior is interpreted as a reduction in the singlet exciton fission rate due to an increase in the energy separation between the singlet exciton state and the triplet exciton pair state. A red shift in the energy of the S 0 → T 1 transition by 15 ± 7 cm −1 /kbar is used to explain the experimental results. This shift is discussed in terms of the interactions which control the transition energy.

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