Excitons in organic semiconductors

被引：104

作者：

Dkhissi, Ahmed ^{[1
]}

机构：

[1] Univ Toulouse, Lab Anal & Architecture Syst, CNRS, F-31077 Toulouse, France

来源：

SYNTHETIC METALS | 2011年 / 161卷 / 13-14期

关键词：

The exciton binding energy; Organic semiconductors; TDDFT; CONJUGATED POLYMERS; BINDING-ENERGY;

D O I：

10.1016/j.synthmet.2011.04.003

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The exciton binding energy (E-b) is one of the heavily debated issues in conjugated polymer literature. Most of the experimental studies suggest values around 0.3-0.4 eV for PPV. On the other hand, binding energies ranging from 0.06 eV to more than 1 eV have been reported as well. Time Dependent Density Functional Theory (TDDFT) is employed to calculate E-b for PPV and polythiophenes and their derivatives in order to (i) to clarify the controversial debate of the magnitude of the exciton in PPV and (ii) to study the influence of the substituents on the exciton binding energy of conjugated polymers. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：1441 / 1443

页数：3

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