...
首页> 外文期刊>Physica Status Solidi. A, Applications and Materials Science >Bulk and surface-enhanced Raman spectroscopy of nitrogen-doped ultrananocrystalline diamond films
【24h】

Bulk and surface-enhanced Raman spectroscopy of nitrogen-doped ultrananocrystalline diamond films

机译:氮掺杂超纳米晶金刚石膜的体和表面增强拉曼光谱

获取原文
获取原文并翻译 | 示例
   

获取外文期刊封面封底 >>

       

摘要

Ultrananocrystalline diamond films (UNCD) grown in an Ar-rich microwave plasma with nitrogen gas added in amounts of 0-25% were studied by Raman spectroscopy using 514.5 and 413.1 nm laser excitation. Besides the Raman spectra of diamond, the first and second order Raman scattering of disordered graphite and polyacetylene were detected and analyzed for samples with different nitrogen content. With surface enhanced Raman scattering (SERS) a variety of surface vibrational modes was observed: (ⅰ) CH_x stretching vibrations of sp~3 and sp~2 hybridized carbon in the range of 2800-3100 cm~(-1); (ⅱ) the sp~2 and sp~1 hybridized CC(CN) stretching modes in the range of 1600-2300 cm~(-1); and (ⅲ) lines in the range of 200-1250 cm~(-1) related to different kinds of vibrations of substituted aromatic rings. These results indicate that in N-doped UNCD films the intergrain material is a well connected mixture of predominantly sp~2 phase with some amount of sp~1 phase of carbon and nitrogen that is suggested to provide high electrical conductivity.
机译:通过使用514.5和413.1 nm激光激发的拉曼光谱研究了在富氩微波等离子体中生长的氮气含量为0-25%的超纳米晶金刚石膜(UNCD)。除了金刚石的拉曼光谱,还检测和分析了无序石墨和聚乙炔的一阶和二阶拉曼散射,并分析了不同氮含量的样品。利用表面增强拉曼散射(SERS),观察到了多种表面振动模式:(ⅰ)sp〜3和sp〜2杂化碳的CH_x拉伸振动范围为2800-3100 cm〜(-1); (ⅱ)sp〜2和sp〜1杂化CC(CN)的拉伸模式在1600-2300 cm〜(-1)范围内; (ⅲ)线在200-1250 cm〜(-1)范围内,与取代的芳环的不同振动有关。这些结果表明,在N掺杂的UNCD薄膜中,晶间材料是主要由sp〜2相与一定数量的sp〜1相的碳和氮组成的良好连接的混合物,建议提供高电导率。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号