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热丝化学气相沉积技术低温制备多晶硅薄膜的结构与光电特性
引用本文:汪六九,朱美芳,刘丰珍,刘金龙,韩一琴. 热丝化学气相沉积技术低温制备多晶硅薄膜的结构与光电特性[J]. 物理学报, 2003, 52(11): 2934-2938
作者姓名:汪六九  朱美芳  刘丰珍  刘金龙  韩一琴
作者单位:(1)中国科学院研究生院物理系,北京 100039; (2)中国科学院研究生院物理系,北京 100039 ;中国科学院半导体研究所,北京 100083
基金项目:国家重点基础研究发展规划项目(批准号:G2000028208)资助的课题.
摘    要:以金属W和Ta为热丝,采用热丝化学气相沉积 ,在250℃玻璃衬底上沉积多晶硅薄膜.研究了热丝温度、沉积气压、热丝与衬底间距等沉积参数对硅薄膜结构和光电特性的影响,在优化条件下获得晶态比Xc>90%,暗电导率σd=10-7—10-6Ω -1cm-1,激活能Ea=0.5eV,光能隙Eopt≤1.3 eV的多晶硅薄膜.关键词:多晶硅薄膜热丝化学气相沉积光电特性

关 键 词:多晶硅薄膜  热丝化学气相沉积  光电特性
文章编号:1000-3290/2003/52(11)/2934-05
收稿时间:2003-01-21
修稿时间:2003-01-21

Structual and optoelectronic properties of polycrystalline silicon thin films p repared by hot-wire chemical vapor deposition at low temperatures
Wang Liu-Jiu )) Zhu Mei-Fang ) Liu Feng-Zhen ) Liu Jin-Long ) Han Yi-Qin ) ). Structual and optoelectronic properties of polycrystalline silicon thin films p repared by hot-wire chemical vapor deposition at low temperatures[J]. Acta Physica Sinica, 2003, 52(11): 2934-2938
Authors:Wang Liu-Jiu )) Zhu Mei-Fang ) Liu Feng-Zhen ) Liu Jin-Long ) Han Yi-Qin ) )
Affiliation:Wang Liu-Jiu 1)2) Zhu Mei-Fang 1) Liu Feng-Zhen 1) Liu Jin-Long 1) Han Yi-Qin 1) 1)
Abstract:Polycrystalline silicon thin films were prepared by hot-wire chemical vapor deposition (HWCVD) on glass at 250℃,with W or Ta wire as the catalyzers. The structual and optoelectronic properties as functions of the filament temperature, deposition pressure and the filament-substrate distance were studied,and the optimized polycrystalline silicon thin films were obtained with Xc>90% (Xc denotes the crystalline ratio of the film), crystal grain size ab out 30—40nm, Rd≈0.8nm/s, σd about 10-7—10-6 Ω-1cm-1,Ea≈0.5eV and Eopt≤1.3eV.
Keywords:polycrystalline silicon   hot-wire CVD   optoelectronic properties
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