| 光谱学与光谱分析 |
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| Photoexcitation Mechanism of Photoconductive Device by Organic/Inorganic Thin-Film Heteropairing |
| JIN Hui，TENG Feng，LIU Jun-feng，MENG Xian-guo，XU Zheng，HOU Yan-bing，XU Xu-rong |
| Institute of Optoelectronic Technology, Laboratory of Materials for Information Storage and Display, Beijing Jiaotong University, Beijing 100044，China |
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Abstract Photoconductive devices with organic (polyvinylcarbazole-PVK)／inorganic (zinc-sulfide—ZnS) thin-film heteropairing were fabricated. In external field, the excitation profile of the steady-state photoconductivity and the primary photoexcitation process of hybrid devices were presented and discussed. Comparison of photoconductivity of the devices and absorption spectra of PVK and ZnS implied that both layers absorption contributes to the photocurrent，but the effective part is at the interface of PVK and ZnS. The dependence of maximum photocurrent on the applied voltage and the dark and illuminated current spectra indicates the ultrafast charge transfer at the interface.
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Received: 2002-10-28
Accepted: 2003-03-16
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Corresponding Authors:
TENG Feng
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| Cite this article: |
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JIN Hui,TENG Feng,LIU Jun-feng, et al. Photoexcitation Mechanism of Photoconductive Device by Organic/Inorganic Thin-Film Heteropairing [J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2004, 24(08): 918-921.
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http://www.gpxygpfx.com/EN/Y2004/V24/I08/918 |
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