SINGLET AND TRIPLET EXCITONS IN CONJUGATED POLYMERS

被引：140
作者：
ABE, S
YU, J
SU, WP
机构：
[1] ELECTROTECH LAB,UMEZONO,TSUKUBA 305,JAPAN
[2] UNIV HOUSTON,DEPT PHYS,HOUSTON,TX 77204
来源：
PHYSICAL REVIEW B | 1992年 / 45卷 / 15期
关键词：
D O I：
10.1103/PhysRevB.45.8264
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Exciton states in conjugated polymers are theoretically studied in the Su-Schrieffer-Heeger model supplemented by long-range Coulomb interactions. The relationship between exciton energies and basic interaction parameters is clarified, demonstrating the special nature of one-dimensional excitons. The binding energies of the lowest singlet and triplet excitons depend sensitively upon the on-site Coulomb energy. Relevant experiments in polydiacetylene can be explained by the present model using moderate interaction strength.
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页码：8264 / 8271
页数：8
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