中国物理B ›› 2013, Vol. 22 ›› Issue (8): 86802-086802.doi: 10.1088/1674-1056/22/8/086802

• CONDENSED MATTER: STRUCTURAL, MECHANICAL, AND THERMAL PROPERTIES • 上一篇    下一篇

Surface saturation control on the formation of wurtzite polytypes in zinc blende SiC nanofilms grown on Si-(100) substrates

刘兴昉, 孙国胜, 刘斌, 闫果果, 关敏, 张杨, 张峰, 董林, 郑柳, 刘胜北, 田丽欣, 王雷, 赵万顺, 曾一平   

  1. Key Laboratory of Semiconductor Materials Science, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China
  • 收稿日期:2012-12-30 修回日期:2013-03-07 出版日期:2013-06-27 发布日期:2013-06-27
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No. 61274007) and the Beijing Natural Science Foundation, China (Grant No. 4132074).

Surface saturation control on the formation of wurtzite polytypes in zinc blende SiC nanofilms grown on Si-(100) substrates

Liu Xing-Fang (刘兴昉), Sun Guo-Sheng (孙国胜), Liu Bin (刘斌), Yan Guo-Guo (闫果果), Guan Min (关敏), Zhang Yang (张杨), Zhang Feng (张峰), Dong Lin (董林), Zheng Liu (郑柳), Liu Sheng-Bei (刘胜北), Tian Li-Xin (田丽欣), Wang Lei (王雷), Zhao Wan-Shun (赵万顺), Zeng Yi-Ping (曾一平)   

  1. Key Laboratory of Semiconductor Materials Science, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China
  • Received:2012-12-30 Revised:2013-03-07 Online:2013-06-27 Published:2013-06-27
  • Contact: Liu Xing-Fang E-mail:liuxf@mail.semi.ac.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No. 61274007) and the Beijing Natural Science Foundation, China (Grant No. 4132074).

摘要: We investigate the formations of wurtzite (WZ) SiC nano polytypes in zinc blende (ZB) SiC nanofilms hetero-grown on Si-(100) substrates via low pressure chemical vapor deposition (LPCVD) by adjusting the Si/C ratio of the introduced precursors. Through SEM, TEM, and Raman characterizations, we find that the nanofilms consist of discrete WZ SiC nano polytypes and ZB SiC polytypes composed of WZ polytypes (WZ+ZB) and disordered ZB SiC polytypes, respectively, according to Si/C ratios of 0.5, 1.5, and 3. We attribute the WZ polytype formation to being due to a kinetic mechanism based on the Si/C surface saturation control.

关键词: SiC, wurtzite, zinc blende, nanofilm

Abstract: We investigate the formations of wurtzite (WZ) SiC nano polytypes in zinc blende (ZB) SiC nanofilms hetero-grown on Si-(100) substrates via low pressure chemical vapor deposition (LPCVD) by adjusting the Si/C ratio of the introduced precursors. Through SEM, TEM, and Raman characterizations, we find that the nanofilms consist of discrete WZ SiC nano polytypes and ZB SiC polytypes composed of WZ polytypes (WZ+ZB) and disordered ZB SiC polytypes, respectively, according to Si/C ratios of 0.5, 1.5, and 3. We attribute the WZ polytype formation to being due to a kinetic mechanism based on the Si/C surface saturation control.

Key words: SiC, wurtzite, zinc blende, nanofilm

中图分类号:  (Thin film structure and morphology)

  • 68.55.-a
71.20.Nr (Semiconductor compounds) 81.07.Bc (Nanocrystalline materials) 81.15.Kk (Vapor phase epitaxy; growth from vapor phase)