无机材料学报

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氮化碳薄膜的结构与特性

陈光华1,2; 吴现成1; 贺德衍1   

  1. 1. 兰州大学物理系, 兰州 730000; 2. 北京工业大学应用物理系, 北京 100022

  • 收稿日期:2000-03-07 修回日期:2000-06-05 出版日期:2001-03-20 网络出版日期:2001-03-20

Structure and Properties of C-N Films Prepared by Hot Filament Assisted rf Plasma CVD

CHEN Guang-Hua1; 2; WU Xian-Cheng1; HE De-Yan1   

  1. 1. Department of Physics; Lanzhou University; Lanzhou 730000; China; 2. Department of Applied Physics; Beijing Polytechnic University) Beijing 100022; China

  • Received:2000-03-07 Revised:2000-06-05 Published:2001-03-20 Online:2001-03-20

摘要: 采用射频等离子体增强化学气相沉积(CVD)+负偏压热丝辅助方法直接在Si(100)衬底上制备了多晶C薄膜.X射线衍射测试表明,薄膜同时含有α-和β-晶相以及未知结构,没有观测到石墨衍射峰.利用扫描电子显微镜观测到线度约2μm、横截面为六边形的β-C晶粒.纳米压痕法测得薄膜的硬度达72.66 GPa.

关键词: 化学气相沉积, 氮化碳, 薄膜, 扫描电镜, 硬度

Abstract: Polycrystalline carbon nitride thin films were prepared on Si (100) by hot filament assisted rf plasma-enhanced chemical vapor deposition with negative bias methods. X-ray distraction (XRD) spectra indicate that the obtained CN films contain both crystalline β-C3N4 and β-C3N4, and a presently unknown structure. Some crystalline particles of 1-2μm in size with hexagonal cross section exist in the polycrystalline carbon nitride film. The maximum hardness of C3N4 thin film is 72.66GPa.

Key words: CVD, C3N4, XRD, SEM, Hardness

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