Ultrafast study of spontaneous emission from conjugated polymer microcavities

被引：11

作者：

Hayes, GR ^{[1
]}

Cacialli, F ^{[1
]}

Phillips, RT ^{[1
]}

机构：

[1] UNIV CAMBRIDGE,CAVENDISH LAB,CAMBRIDGE CB3 0HE,ENGLAND

来源：

PHYSICAL REVIEW B | 1997年 / 56卷 / 08期

关键词：

D O I：

10.1103/PhysRevB.56.4798

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Results are presented of femtosecond photoluminescence spectroscopy and photoluminescence quantum efficiency measurements of a planar conjugated polymer microcavity consisting of a layer of poly(p-phenylenevinylene) sandwiched between a dielectric mirror and an evaporated metallic layer. By comparison with measurements of a similar structure in the absence of the metallic mirror it is shown that the spontaneous emission rate is not increased notably due to the optical confinement of the microcavity, even though the emission is significantly enhanced in the forward direction. The time-resolved photoluminescence spectra highlight the rapid vibrational relaxation and energy migration of excitons that occur in conjugated polymers.

引用

页码：4798 / 4801

页数：4

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