Journal of Electronic Materials

, Volume 24, Issue 9, pp 1057–1059

Vertical bridgman techniques to homogenize zinc composition of CdZnTe substrates

  • T. S. Lee
  • S. B. Lee
  • J. M. Kim
  • J. S. Kim
  • S. H. Suh
  • J. H. Song
  • I. H. Park
  • S. U. Kim
  • M. J. Park
Article

DOI: 10.1007/BF02653053

Cite this article as:
Lee, T.S., Lee, S.B., Kim, J.M. et al. JEM (1995) 24: 1057. doi:10.1007/BF02653053

Abstract

In order to improve the Zn homogeneity along the axial direction of CdZnTe boule, we have employed a modified Bridgman technique using a (Cd, Zn) alloy source in communication with the melt, whose temperature has been gradually changed from 800 to 840°C during growth. Electron probe microanalysis (EPMA) measurements of Zn composition in the boule shows an excellent homogeneity of Zn along the axis of the CdZnTe boule compared with results in a boule grown by using a fixed source temperature. We have performed a numerical simulation to obtain the approximate temperatures of additional heating and cooling needed to improve the radial Zn homogeneity. CdZnTe boule has been grown by seeded vertical Bridgman furnace with two zones of heater and cooler. Ultraviolet/visible spectroscopic measurements of Zn composition over the length of the boule indicate that the radial distribution of Zn composition is very homogeneous in the body region of the boule, where the radial variation of Zn composition is ±0.0005.

Key words

CdZnTe modified Bridgman technique numerical simulation Zn homogeneity 

Copyright information

© The Metallurgical of Society of AIME 1995

Authors and Affiliations

  • T. S. Lee
    • 1
  • S. B. Lee
    • 1
  • J. M. Kim
    • 1
  • J. S. Kim
    • 2
  • S. H. Suh
    • 2
  • J. H. Song
    • 3
  • I. H. Park
    • 3
  • S. U. Kim
    • 3
  • M. J. Park
    • 3
  1. 1.Agency for Defense DevelopmentTaejeonKorea
  2. 2.Korea Institute of Science and TechnologyCheongryangri, SeoulKorea
  3. 3.Korea UniversitySeongbugku, SeoulKorea

Personalised recommendations