金刚石薄膜中SP^2／SP^3键价比拉曼光谱分析

Analysis of SP^2／ SP^2／SP^3 Bonding Ratio in Diamond Thin Films by Raman Spectroscopy

金刚石薄膜中ＳＰ￣２／ＳＰ￣３键价比拉曼光谱分析张兵临Ｈ，Ｍ．Ｐｈｉｌｌｌｉｐｓ（郑州大学物理系郑州４５００５２）ＡｎａｌｙｓｉｓｏｆＳＰ￣２／ ＳＰ￣２／ＳＰ￣３ＢｏｎｄｉｎｇＲａｔｉｏｉｎＤｉａｍｏｎｄＴｈｉｎＦｉｌｍｓｂｙＲａｍａｎＳｐｅｃｔｒ...

Abstract There is only one Raman-active mode of F^(25+)（F_(2g)） （F_(2g)）symmetry in the first order for Sp^3 diamond phase，which is observed at l332cm^(-1)，The E_(2g) modes are Raman active and have been observed at 42 and l 580cm^(_1)for graphite Sp^2 phase. An additional disordered Raman line is at about 1355cm^(-1). In this paper， three of the Raman lines at 1332，1355 1580cm^(-1) are considered to calculate the Sp^2 Sp^3 bonding ratio of polycrystall diamond thin film by using computer fitting.