金刚石薄膜对硝酸钾红外吸收特性的影响  

Effect of Diamond Film on Infrared Absorption Properties of Potassium Nitrate

作　　者：孔祥飞[1] 郭强[1] 李春[1] 元光[1] 

机构地区：[1]中国海洋大学物理系,山东青岛266100

出　　处：《光谱学与光谱分析》2012年第9期2362-2365,共4页Spectroscopy and Spectral Analysis

基　　金：国家自然科学基金项目(41076057;60907007)资助

摘　　要：利用热丝化学气相沉积(CVD)方法在硅片基底上生长金刚石薄膜,以硝酸钾为研究对象,采用浸泡吸附连续测量的方式,研究了金刚石薄膜对硝酸盐红外吸收特性的影响。实验结果表明,金刚石薄膜与硝酸钾紧密结合,产生短距离作用,使得硝酸根的反对称伸缩振动产生明显的红移,ν1及ν2振动模式峰位分别红移30和13cm-1;其中ν1振动模式的红移可能主要来自金刚石薄膜与硝酸钾的结合以及声子共振的影响,而ν2振动模式的红移可能主要来自硝酸钾内应力的影响。The influence of diamond film on potassium nitrate infrared absorption was studied.The diamond film was grown on silicon substrates by hot filament chemical vapor deposition（CVD） method.The infrared absorption of potassium nitrate shows that the antisymmetric stretching vibrations ν1 and ν2 of nitrate are red-shifted by 30 and 13 cm-1 respectively.The red-shift of ν1 vibration is mainly attributed to the combination of diamond film with potassium nitrate and phonon resonance effects,and the red-shift of ν2 vibration mode is attributed to the influence of potassium nitrate’s internal stress.

关 键 词：红外吸收 金刚石薄膜 硝酸盐 

分 类 号：O657.3[理学—分析化学]