Photogeneration mechanism and exciton binding energy in phenylenevinylene polymers

被引：42

作者：

Rothberg, LJ ^{[1
]}

Yan, M ^{[1
]}

Fung, AWP ^{[1
]}

Jedju, TM ^{[1
]}

Kwock, EW ^{[1
]}

Galvin, ME ^{[1
]}

机构：

[1] LUCENT TECHNOL,BELL LABS,MURRAY HILL,NJ 07974

来源：

SYNTHETIC METALS | 1997年 / 84卷 / 1-3期

关键词：

poly(phenylene vinylene) and derivatives; time-resolved fast spectroscopy; stimulated luminescence; photoconductivity;

D O I：

10.1016/S0379-6779(97)80850-8

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We report measurements in a substituted phenylenevinylene polymer where we correlate the reduction of exciton population with the reduction of photoconductivity. These illustrate that the photogenerated carriers derive primarily from exciton dissociation in what is probably an intrinsic process. Excitons which survive several picoseconds do not eventually dissociate and contribute to photoconductivity, presumably reflecting a binding strength large compared to thermal energies.

引用

页码：537 / 538

页数：2