机构地区: 韩山师范学院物理与电子工程系
出 处: 《功能材料》 2008年第5期848-850,共3页
摘 要: 采用传统的射频等离子体增强化学气相沉积技术,在较高的工作气压(133~266Pa)下,以0.4nm/s速率制备出优质的氢化纳米晶硅薄膜。薄膜的晶化率约60%,平均晶粒尺寸约6.0nm,暗电导率为10^-3~10^-4/Ω·cm。红外吸收谱显示,薄膜中没有Si-O、Si-C、Si-N等杂质键,随晶化率的提高,Si-H键也逐渐消失。 Hydrogenated nano-crystalline silicon thin films(nc-Si : H) with deposition rate of 0.4nm/s were prepared by conventional plasma enhanced chemical vapor deposition(PECVD) technique under the high deposition pressure(133-266Pa), which were characterized and analyzed by Raman spectra and IR spectra. The results showed the average grain size is about 6nm,dark-conductivity value is about 10^-4-10^-3/Ω·cm;the FTIR spectra showed that the bonds of Si-C,Si-O,or Si-N have not been found, the Si-H bond disappeares gradually with the crystallinity increasing.
领 域: [电气工程]