ULTRAFAST FIELD-INDUCED DISSOCIATION OF EXCITONS IN CONJUGATED POLYMERS

被引：306

作者：

KERSTING, R

LEMMER, U

DEUSSEN, M

BAKKER, HJ

MAHRT, RF

KURZ, H

ARKHIPOV, VI

BASSLER, H

GOBEL, EO

机构：

[1] UNIV MARBURG,FACHBEREICH PHYS,D-35032 MARBURG,GERMANY

[2] UNIV MARBURG,FACHBEREICH PHYS CHEM,D-35032 MARBURG,GERMANY

[3] UNIV MARBURG,ZENTRUM MAT WISSENSCH,D-35032 MARBURG,GERMANY

[4] MOSCOW ENGN PHYS INST,MOSCOW 115409,RUSSIA

来源：

PHYSICAL REVIEW LETTERS | 1994年 / 73卷 / 10期

关键词：

D O I：

10.1103/PhysRevLett.73.1440

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We present a time-resolved study of the field-induced luminescence quenching in poly(phenylphenylenevinylene) using femtosecond luminescence spectroscopy. The dynamic quenching of the luminescence reveals a delay between the generation of excitons and their breakup into geminate electron-hole pairs. We explain the data by the interplay of the dissociation and the spectral relaxation of the excitons within an inhomogeneously broadened density of states. Our experimental results suggest that the photocarriers in conjugated polymers are not formed directly but result from dissociation of excitons.

引用

页码：1440 / 1443

页数：4

共 22 条

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