Open AccessEffect of interchain coupling on the inversed polarization of a biexciton in conjugated polymers
Author(s) -
Kun Gao,
Fu Ji-Yong,
Desheng Liu,
Shijie Xie
Publication year - 2005
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.54.665
Subject(s) - polarization (electrochemistry) , biexciton , degenerate energy levels , coupling (piping) , condensed matter physics , materials science , conjugated system , exciton , polymer , molecular physics , physics , chemical physics , quantum mechanics , chemistry , metallurgy , composite material
Effect of interchain coupling on the inversed polarization of a biexciton has been studied in the framework of a tightbinding approximation. It was found that a biexciton state is mainly confined in one chain even the interchain coupling is included. The inversed polarization will be enhanced remarkably with the interchain coupling in the case of a weak nondegenerate confinement. However, the inversed polarization will keep nearly unchanged for a strong nondegenerate confinement.