采用功率密度分别为300、750和1500W/mm2的氩离子激光器,对由射频等离子化学气相沉积(RF-CVD)法制备的掺氮类金刚石薄膜进行了激光退火处理.并用傅立叶红外吸收光谱和显微Raman等手段,对所得样品进行了研究.结果表明:C-N键比C-H键更为稳定,一方面氮原子的引入制约了C-H键的生成,在激光退火中减少了因C-H键分解而引起薄膜的石墨化;另一方面生成的C-N键不易受热分解;因此随着氮含量的增加,薄膜中C-N成分增加,从而提高了类金刚石薄膜的热稳定性.
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