| ZnS:Mn.Cu粉末直流电致发光(DCEL)屏的光电导特性 |
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| 引用本文： | 郭铜安,周连祥.ZnS:Mn.Cu粉末直流电致发光(DCEL)屏的光电导特性[J].光子学报,1990,19(4):377-380. |
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| 作者姓名： | 郭铜安 周连祥 |
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| 作者单位： | 中科院西安光机所
(郭铜安)，中科院长春物理所(周连祥) |
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| 摘 要： | 本文首次研究了DCEL屏的光电导特性,结果表明,Zn:Mn.Cu粉末DCEL屏的光电导特性主要是由于DCEL屏形成过程中,因Cu+离子迁移而在发光区(或乏铜区)的ZnS颗粒表面形成的表面电子陷阱能级被激发所致。
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| 关 键 词： | DCEL屏 光电导特性 电子陷阱能级 |
| 收稿时间： | 1990-02-17 |
PHOTOCONDUCTANCE CHARACTERISTICS IN POWDER ZnS:Mn,Cu DCEL PANELS |
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| Guo TonganXian Institute of Optics and Precision Mechanics,Academia SinicaZhou LianxiangChangchun Institute of Physics,Academia Sinica.PHOTOCONDUCTANCE CHARACTERISTICS IN POWDER ZnS:Mn,Cu DCEL PANELS[J].Acta Photonica Sinica,1990,19(4):377-380. |
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| Authors: | Guo TonganXian Institute of Optics and Precision Mechanics Academia SinicaZhou LianxiangChangchun Institute of Physics Academia Sinica |
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| Institution: | 1. Xian Institute of Optics and Precision Mechanics, Academia Sinica;2. Changchun Institute of Physics, Academia Sinica |
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| Abstract: | It has been reported1] that in the forming process of powder ZnS:Mn, Cu DCEL panels, some surface electron-trap levels (ΔEt1 =0.64ev, ΔEt3 =0.89ev…) win appear on the surface of ZnS particles, owing to oxygen tons (O- &; O2-) absorption. In this paper, photo conductance, phenomenon is firstly reported and some preliminary studies been done.From lots of experimental facts, it can be concluded that the photoconductance phenomenon is mainly caused by the electrons in ZnS surface electron-traps, excited into conduction band, and get enough energy within the electric field to overcome the electron affinity leaving ZnS surface becoming conductant free electrons. |
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| Keywords: | DCEL panels Photoconductance Electronic traps band |
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