以正硅酸乙酯(TEOS)和八氟环丁烷(C4F8)为原料,采用等离子体增强化学气相淀积(PECVD)方法制备了氟碳掺杂的氧化硅薄膜(SiCOF).样品的X射线光电子能谱(XPS)和傅立叶变换红外光谱(FTIR)分析表明薄膜中含有Si-F、Si-O、C-F、C-CFx、CF2等构型.刚淀积的薄膜的折射率约为1.40.对暴露在空气中以及在不同温度下退火后薄膜的折射率做了测量,并对其变化机理进行了讨论,同时表明了理想的淀积温度应是300℃.
Fluorine and carbon-doped silicon oxide films (SiCOF) were deposited from tetraoxethylsilane (TEOS)
and octafluorocyclobutane (C4F8) by plasma-enhanced chemical vapor deposition (PECVD). The study of X-ray photoelectron spectrum (XPS) and
Fourier transform infrared spectrum (FTIR) of the film reveals that there are Si-F, Si-O, C-F, C-CFx, CF2, etc., configurations co-existing in the
film. The refractive index of the as-deposited film is about 1.40. The refractive index of the film was measured as a function of the time of
exposure to the atmosphere and annealing temperatures, and the mechanism of the change in the refractive index was discussed. The results show that
an ideal deposition temperature is about 300℃.
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