The Photoconductivity of Poly(N-vinylcarbazole). V. The Doping Effects of Various Materials on the Photoconductivity
The Photoconductivity of Poly(N-vinylcarbazole). V. The Doping Effects of Various Materials on the Photoconductivity
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聚（N-乙烯基咔唑）的光电导性。
DOI：
10.1246/bcsj.46.2613
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发表时间：
1973
影响因子：
4
通讯作者：
H. Mikawa
中科院分区：
文献类型：
--
作者：
K. Okamoto;S. Kusabayashi;H. Mikawa
研究了不同材料掺杂的聚N-乙烯基咔唑(PVCz)薄膜的光电导和荧光光谱。根据掺杂剂的种类，掺杂薄膜的光导性能可分为三类。电子给体的掺杂，如四甲基对苯二胺和1，5-二氨基萘，由于掺杂分子的空穴捕获效应，使所有波长区域的光电流降低了102到104倍。在供体和PVCz之间形成的激基复合体似乎对光电流没有贡献。另一方面，受体的掺杂，如TCNE和对苯二甲酸二甲酯的掺杂，增强了光电流。在PVCz和受体之间形成的激发CT络合物的场辅助热解离似乎是一个载流子产生过程。结果表明，在紫外区掺入菲、茂使PVCz的荧光猝灭约10~30倍，使紫外区的光电流减小2~7倍，同时增强了PVCz的发光强度。
The photoconductivity and fluorescence spectra of poly(N-vinylcarbazole) (PVCz) films doped with various materials were investigated. The photoconductive properties of doped films may be grouped into three classes according to the kind of dopant. The doping of an electron donor, such as tetramethyl-p-phenylenediamine and 1,5-diaminonaphthalene, reduced the photocurrent in all the wavelength regions by a factor of 102 to 104 because of the hole-trapping effect of the dopant molecule. The exciplex formed between the donor and PVCz does not seem to contribute to the photocurrent. The doping of an acceptor, such as TCNE and dimethyl terephthalate, on the other hand, enhanced the photocurrent. The field-assisted thermal dissociation of an excited CT complex formed between PVCz and an acceptor seems to be a carrier generation process. The doping of anthracene or perylene quenched the fluorescence of PVCz by a factor of 10 to 30 and reduced the photocurrent in the UV region by a factor of 2 to 7, while it enhanc...