Articles
  • Forming a thick CdZnTe epitaxial film by sublimating closely spaced

  • Xiang-Xiang Luoa,b*, Cheng-Fang Qiaoa, Simon R Hallb and Chun-Sheng Zhoua,*

  • aCollege of Chemical Engineering and Modern Materials, Shangluo University, China
    bSchool of Chemistry, University of Bristol, UK

  • This article is an open access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Thick Cadmium zinc telluride epitaxial films were grown on (100)GaAs substrate by Close-Spaced Sublimation. The growth rate was around 1 μm/min. SEM observations and XRD θ-2θ scan and ф scan revealed well-defined epitaxial features of the films. The films were found to be polycrystalline at the early stage of growth. As growth progressed, the films gradually became oriented until an epitaxial layer was formed. The polycrystalline to monocrystalline transition was achieved by preferential lateral growth of the grains and with the aid of migration of atoms in the film. This growth mode differs from the well-established epitaxy where a suitable lattice fit is expected from the early stages of film growth. This mode can better guide the growth mode of CZT thick films, and can grow large volume and high-quality thick films. High quality thick films can be better applied in fields such as solar cells, infrared and ultraviolet detection, and X-ray detection.


Keywords: cadmium zinc telluride, epitaxial film, close-spaced sublimation, thick film

This Article

  • 2023; 24(6): 935-940

    Published on Dec 31, 2023

  • 10.36410/jcpr.2023.24.6.935
  • Received on Jun 28, 2023
  • Revised on Aug 22, 2023
  • Accepted on Aug 30, 2023

Correspondence to

  • Xiang-Xiang Luo a,b, Chun-Sheng Zhou a

  • aCollege of Chemical Engineering and Modern Materials, Shangluo University, China
    bSchool of Chemistry, University of Bristol, UK
    Tel : 08613991149672 Fax: 086 0914-2986027

  • E-mail: luo_xiangx@163.com, slzhoucs@126.com