Fast photoresponse in organic semiconductors: understanding the mechanisms and structure-property relationships

被引：5

作者：

Ostroverkhova, O ^{[1
]}

Shcherbyna, S ^{[1
]}

Cooke, DG ^{[1
]}

Egerton, R ^{[1
]}

Tykwinski, RR ^{[1
]}

Anthony, JE ^{[1
]}

Hegmann, FA ^{[1
]}

机构：

[1] Univ Alberta, Dept Phys, Edmonton, AB T6G 2J1, Canada

来源：

LINEAR AND NONLINEAR OPTICS OF ORGANIC MATERIALS IV | 2004年 / 5517卷

关键词：

organic semiconductors; pentacene; molecular electronics; transient photoconductivity; terahertz spectroscopy;

D O I：

10.1117/12.562334

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We present a comprehensive study of ultrafast time-resolved photoconductivity in pentacene and functionalized pentacene single crystals and thin films measured using optical pump-terahertz probe technique. By investigating the wavelength and temperature dependence of the transient photoconductivity, we reveal a sub-picosecond wavelength-independent charge carrier photogeneration and band-like charge transport in both single crystal and thin film samples. The amplitude and decay dynamics of the photoconductivity transients are correlated with the morphology of the films, assessed by atomic force and electron microscopy.

引用

页码：163 / 174

页数：12

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