4H.SiC表面极性调控的石墨薄膜生长及其柔性导电性能研究
CSTR:
作者:
作者单位:

(1.中国科学院半导体研究所半导体芯片物理与技术全国重点实验室,北京 100083;2.中国科学院大学材料科学与光电技术学院,北京 100049;3.低维半导体材料与器件北京市重点实验室,北京 100083)

作者简介:

王于洋(2001—),男,河南省周口市人,硕士研究生,主要从事 SiC外延生长及 SiC基异质界面材料的工艺研究;闫果果(1985—),女,北京市海淀区人,博士,高级工程师,主要从事碳化硅半导体材料方面的研究。

通讯作者:

中图分类号:

TN304

基金项目:


Growth and Flexible Conductive Properties of Graphite Films Regulated by 4H-SiC Surface Polarity
Author:
Affiliation:

(1. State Key Laboratory of Physics and Technology of Semiconductor Chips,Institute of Semiconductors,Chinese Academy of Sciences,Beijing 100083,CHN;2. School of Materials Science and Optoelectronic Technology,University of Chinese Academy of Sciences,Beijing 100049,CHN;3. Beijing Key Laboratory of Low Dimensional Semiconductor Materials and Devices,Beijing 100083,CHN)

Fund Project:

  • 摘要
  • |
  • 图/表
  • |
  • 访问统计
  • |
  • 参考文献
  • |
  • 相似文献
  • |
  • 引证文献
  • |
  • 资源附件
  • |
  • 文章评论
    摘要:

    为探究 4H-SiC衬底表面极性对石墨薄膜生长的调控作用,文章采用化学气相沉积(CVD)法,以甲基三氯硅烷(MTS)为前驱体,在 1 700℃下制备了石墨薄膜。系统分析了石墨薄膜的物相结构与微观形貌,并对剥离后的薄膜进行了柔性与导电性验证。研究结果表明,受衬底极性调控,石墨薄膜在 4H-SiC硅面上为二维层状生长,厚度约为 1.94 μm;而在碳面上为纵向柱状生长,厚度达 8.11 μm,但缺陷显著增多。其中,硅面上生长的石墨薄膜本征电导率约为 1. 5×104 S/cm,当弯曲直径为 0.8 cm时,表面未观察到明显裂纹。经 100次连续循环弯折后,该薄膜仍保持一定的电学连续性,电阻变化率最终稳定在约 33. 7%。该研究揭示了 4H-SiC衬底不同极性表面的微观生长差异,证明了硅面生长的石墨薄膜具有一定的柔性导电特征。

    Abstract:

    In this study,graphite films were prepared via chemical vapor deposition(CVD)at 1 700° C using methyltrichlorosilane(MTS)to investigate the regulatory effect of 4H-SiC surface polarity on the growth of graphite film. The phase structure and micromorphology of the films were systematically analyzed and the flexibility and conductivity of the exfoliated films were verified. The results showed that the growth of the film was governed by the polarity of the substrate;the graphite film exhibited two-dimensional layered growth on the Si-face with a thickness of ~1. 94 μm,whereas it exhibited vertical columnar growth on the C-face reaching a thickness of ~8. 11 μm with significantly increased defects. Specifically,the graphite film grown on the Si-face exhibited an intrinsic conductivity of 1. 5×10. S/cm with no visible cracks at a bending diameter of 0. 8 cm. The film remained electrically continuous after 100 continuous bending cycles, with the variation in resistance eventually stabilizing at ~33. 7%. The findings of this study revealed distinct microscopic growth behaviors on different polar surfaces of the 4H-SiC substrate and confirmed the inherent flexibility and conductivity of the graphite film grown on the Si-face.

    参考文献
    相似文献
    引证文献
引用本文

王于洋,赵涵雨,裴羿成,李云凯,魏默予,孔涵,艾辰霖,闫果果,刘兴昉.4H. SiC表面极性调控的石墨薄膜生长及其柔性导电性能研究[J].半导体光电,2026,47(4):668-674. WANG Yuyang, ZHAO Hanyu, PEI Yicheng, LI Yunkai, WEI Moyu, KONG Han, AI Chenlin, YAN Guoguo, LIU Xingfang. Growth and Flexible Conductive Properties of Graphite Films Regulated by 4H-SiC Surface Polarity[J].,2026,47(4):668-674.

复制
分享
相关视频

文章指标
  • 点击次数:
  • 下载次数:
  • HTML阅读次数:
  • 引用次数:
历史
  • 收稿日期:2026-03-07
  • 最后修改日期:
  • 录用日期:
  • 在线发布日期: 2026-08-25
  • 出版日期:
文章二维码