NATURE OF THE PRIMARY PHOTOEXCITATIONS IN POLY(ARYLENE-VINYLENES)

被引：123

作者：

PAKBAZ, K ^{[1
]}

LEE, CH ^{[1
]}

HEEGER, AJ ^{[1
]}

HAGLER, TW ^{[1
]}

MCBRANCH, D ^{[1
]}

机构：

[1] LOS ALAMOS NATL LAB,LOS ALAMOS,NM 87545

来源：

SYNTHETIC METALS | 1994年 / 64卷 / 2-3期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1016/0379-6779(94)90127-9

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We present an overview of the optical properties and related experimental results obtained from poly(para-phenylene vinylene), PPV, and its soluble derivatives, and we critically examine the interpretation of these data in the context of both the band model and the exciton model of the electronic structure of these semiconducting and luminescent polymers. Results obtained from highly oriented and structurally ordered PPVs demonstrate that the observed disparities between the physical properties of PPV and the polydiacetylenes (PDAs) are not due to disorder; these differences are intrinsic and arise from the fundamental difference in the nature of the low energy photoexcited states: excitons in the PDAs and free carriers in the PPVs.

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收藏

页码：295 / 306

页数：12

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