15 October 2004 Fast photoresponse in organic semiconductors: understanding the mechanisms and structure-property relationships
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Abstract
We present a comprehensive study of ultrafast time-resolved photconductivity 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 correleated with the morphology of the films, assessed by atomic force and electron microscopy.
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Oksana Ostroverkhova, Oksana Ostroverkhova, Svitlana Shcherbyna, Svitlana Shcherbyna, David G. Cooke, David G. Cooke, Ray Egerton, Ray Egerton, Rik R. Tykwinski, Rik R. Tykwinski, John E. Anthony, John E. Anthony, Frank A. Hegmann, Frank A. Hegmann, } "Fast photoresponse in organic semiconductors: understanding the mechanisms and structure-property relationships", Proc. SPIE 5517, Linear and Nonlinear Optics of Organic Materials IV, (15 October 2004); doi: 10.1117/12.562334; https://doi.org/10.1117/12.562334
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