SEMICONDUCTOR PHYSICS

Effects of Sn-doping on morphology and optical properties of CdTe polycrystalline films

Li Jin, Yang Liny, Jian Jikang, Zou Hua and Sun Yanfei

+ Author Affiliations

PDF

Abstract: Sn-doped CdTe polycrystalline films were successfully deposited on ITO glass substrates by close space sublimation. The effects of Sn-doping on the microstructure, surface morphology, and optical properties of polycrystalline films were studied using X-ray diffraction, scanning electron microscopy, and ultraviolet-visible spectrophotometry, respectively. The results show that the lower molar ratio of Sn and CdTe conduces to a strongly preferential orientation of (111) in films and a larger grain size, which indicates that the crystallinity of films can be improved by appropriate Sn-doping. As the molar ratio of Sn and CdTe increases, the preferential orientation of (111) in films becomes weaker, the grain size becomes smaller, and the crystal boundary becomes indistinct, which indicates that the crystallization growth of films is incomplete. However, as the Sn content increases, optical absorption becomes stronger in the visible region. In summary, a strongly preferential orientation of (111) in films and a larger grain size can be obtained by appropriate Sn-doping (molar ratio of Sn : CdTe = 0.06 : 1), while the film retains a relatively high optical absorption in the visible region. However, Sn-doping has no obvious influence on the energy gap of CdTe films.

Key words: CdTe polycrystalline films Sn-doping preferential orientation growth morphology optical properties close space sublimation

  • Search

    Advanced Search >>

    GET CITATION

    shu

    Export: BibTex EndNote

    Article Metrics

    Article views: 4596 Times PDF downloads: 2558 Times Cited by: 0 Times

    History

    Received: 18 August 2015 Revised: 12 June 2009 Online: Published: 01 November 2009

    Catalog

      Email This Article

      User name:
      Email:*请输入正确邮箱
      Code:*验证码错误
      Li Jin, Yang Liny, Jian Jikang, Zou Hua, Sun Yanfei. Effects of Sn-doping on morphology and optical properties of CdTe polycrystalline films[J]. Journal of Semiconductors, 2009, 30(11): 112003. doi: 10.1088/1674-4926/30/11/112003 Li J, Yang L, Jian J K, Zou H, Sun Y F. Effects of Sn-doping on morphology and optical properties of CdTe polycrystalline films[J]. J. Semicond., 2009, 30(11): 112003. doi: 10.1088/1674-4926/30/11/112003.Export: BibTex EndNote
      Citation:
      Li Jin, Yang Liny, Jian Jikang, Zou Hua, Sun Yanfei. Effects of Sn-doping on morphology and optical properties of CdTe polycrystalline films[J]. Journal of Semiconductors, 2009, 30(11): 112003. doi: 10.1088/1674-4926/30/11/112003

      Li J, Yang L, Jian J K, Zou H, Sun Y F. Effects of Sn-doping on morphology and optical properties of CdTe polycrystalline films[J]. J. Semicond., 2009, 30(11): 112003. doi: 10.1088/1674-4926/30/11/112003.
      Export: BibTex EndNote

      Effects of Sn-doping on morphology and optical properties of CdTe polycrystalline films

      doi: 10.1088/1674-4926/30/11/112003
      • Received Date: 2015-08-18
      • Accepted Date: 2009-04-07
      • Revised Date: 2009-06-12
      • Published Date: 2009-10-29

      Catalog

        /

        DownLoad:  Full-Size Img  PowerPoint
        Return
        Return