PHOTOCURRENT EXCITATION-SPECTRA OBSERVED WITH AU AL HETEROELECTRODES BIASED REVERSELY AND REFLECTION SPECTRA IN TRANS-POLYACETYLENE

被引：7

作者：

KUBO, T

TSUJI, T

WATANABE, T

FUKUDA, T

TAKEZOE, H

FUKUDA, A

机构：

[1] Tokyo Institute of Technology, Department of Organic and Polymerie Materials, Tokyo, 152, O-okayama, Meguro-ku

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS | 1991年 / 30卷 / 3B期

关键词：

TRANS-POLYACETYLENE; PHOTOCURRENT; PHOTOVOLTAGE; OPTICAL ABSORPTION; REFLECTANCE; LOCALIZED EXCITON; LOW LYING EXCITED STATES;

D O I：

10.1143/JJAP.30.L500

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

To understand the low lying excited states of trans-polyacetylene, optical properties were studied at room temperature on carefully prepared samples by measuring photocurrent (PC) and photovoltage excitation spectra as well as optical absorption and reflectance. The 1.4 eV PC peak, the appearance of which sensitively depends on the sample quality, is correlated with some additional absorption sticking to the intrinsic absorption edge. An enhancement of PC with Au-A1 electrodes biased reversely was observed in excitation spectra between 1.5 approximately 2.0 eV, indicating that the formation of excitons causes three reflection peaks in this spectral region.

引用

页码：L500 / L503

页数：4

共 20 条

[1] EXCITON VERSUS INTERBAND ABSORPTION IN PEIERLS INSULATORS [J].