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Effect of electric field on mixing of Frenkel excitons and charge transfer states of a linear molecular crystal
Author(s) -
Petelenz P.,
Zgierski M. Z.
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.2220690115
Subject(s) - electric field , exciton , anthracene , crystal (programming language) , charge (physics) , mixing (physics) , absorption (acoustics) , field (mathematics) , atomic physics , chemistry , condensed matter physics , molecular physics , materials science , physics , optics , photochemistry , quantum mechanics , computer science , programming language , mathematics , pure mathematics
The mixing between Frenkel excitons and charge‐transfer states of a linear molecular crystal in an electric field is investigated. The Merrifield model is adopted. It is shown that the electric field increases the above mentioned mixing, leading therefore to an increase of the light absorption with simultaneous creation of an electron–hole pair. It also can change slightly the position of the Frenkel exciton absorption line. Semiempirical calculations of anthracene dimers in an electric field show that this effect should be observable at electric fields with strengths higher than 10 6 V/cm, the direction of the field being along the long c ‐axis of the anthracene crystal.