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Effective Electron—Electron Interaction in Conjugated Polymers
Author(s) -
Ukrainskii I. I.
Publication year - 1981
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.2221060106
Subject(s) - exciton , polyacetylene , electron , conjugated system , excitation , conduction electron , conduction band , charge carrier , electron excitation , singlet state , materials science , polymer , atomic physics , chemistry , molecular physics , condensed matter physics , physics , excited state , quantum mechanics , composite material
The excitation energies of charge carriers and neutral excitons in polyacetylene and polydiacetylene are calculated taking into account the electron correlation effects. The singlet exciton band is shown to split off a conduction band if and only if the electron‐electron repulsion on the neighbouring carbon atoms differs from zero. The value of this repulsion is found to be about 3 eV.