Open AccessPOLARIZATION OF SELF-TRAPPED EXCITON IN POLYMERS UNDER THE ELECTRIC FIELD
Author(s) -
Ruigang Fu,
Hongjuan Ye,
Lei Li,
Ruigang Fu,
Miao Jian,
XingWen Sun,
Zhilin Zhang
Publication year - 1998
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.47.94
Subject(s) - electric field , exciton , polarization (electrochemistry) , biexciton , electron , condensed matter physics , polarization density , physics , polymer , lattice (music) , materials science , magnetic field , nuclear magnetic resonance , quantum mechanics , chemistry , magnetization , acoustics
The self-trapped exciton in polymers under the electric field has been studied using a tight-binding model including the electric field, symmetry-breaking term te and electron-lattice interaction simultaneously. It is discovered that the electric field will polarize the self-trapped exciton in polymers. The polarization depends on the electric field E and te. When te≤0.1eVself-trapped biexciton in polymers shows the characteristic of the reverse polarization, i.e., electrons move along the direction of E; however, plus charges move along the minus direction of E. The cause of the polarization has been discussed.