DETECTION OF ELECTRONIC EXCITED-STATES IN CONJUGATED POLYMERS BY PICOSECOND TRANSIENT STRAIN SPECTROSCOPY

被引：16

作者：

KANNER, GS ^{[1
]}

FROLOV, S ^{[1
]}

VARDENY, ZV ^{[1
]}

机构：

[1] UNIV UTAH,DEPT PHYS,SALT LAKE CITY,UT 84112

来源：

PHYSICAL REVIEW LETTERS | 1995年 / 74卷 / 09期

关键词：

D O I：

10.1103/PhysRevLett.74.1685

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We describe a new type of spectroscopy based on picosecond transient strain in absorption photomodulation that can be used to detect and identify both allowed and forbidden optical transitions in solid thin films. We have applied the new spectroscopy to a variety of conducting polymer films such as polythiophene, trans and cis polyacetylene, and poly(diethynyl-silane), in which we measured energy levels of various excitonic states with odd and even symmetry that are, respectively, allowed and forbidden in the optical absorption. © 1995 The American Physical Society.

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页码：1685 / 1688

页数：4

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