The pulse-photoconductivity of poly(1-vinylpyrene)
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概要
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The migration of electronic excitation energy, the steady-state photoconductivity, the hole-drift mobility and the carrier-photogeneration efficiency of holes in poly(1-vinylpyrene)(PVPy) films were investigated and compared with those in poly(<I>N</I>-vinylcarbazole)(PVCz) films. Although the concentration of the excimer-forming sites in PVPy films was about twenty times as large as that in PVCz films, the magnitude of the steady-state photoconductivity of PVPy was comparable to that of PVCz. The hole mobility in PVPy films was about one-half as large as that in PVCz films. The electric field and temperature dependence of the mobility fit Gill's empirical equation. The carrier-photogeneration efficiency, <I>Φ</I>, of PVPy was larger than that of PVCz. The filed dependence of <I>Φ</I> of PVPy for all the excitation bands was in good agreement with the Onsager theory of geminate recombination. The high photoconductivity of PVPy could be explained on the basis of these results.
- 公益社団法人 日本化学会の論文
著者
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Okamoto Ken-ichi
Department Of Advanced Materials Science & Engineering Faculty Of Engineering Yamaguchi Universi
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Itaya Akira
Department of Chemical Engineering, Faculty of Engineering, Yamaguchi University
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