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.

引用

页码：8264 / 8271

页数：8

共 37 条

[1] EXCITON VERSUS INTERBAND ABSORPTION IN PEIERLS INSULATORS [J].