Infrared transmission spectra of Cd1-xZnxTe (x = 0.04) crystals

Li Yujie, Gu Zhi, Li Guoqiang, Jie Wanqi

Research output: Contribution to journalArticlepeer-review

23 Scopus citations

Abstract

Three indicators (T1000, T5000, and T 1000/T5000) are used to appraise the infrared (IR) transmission spectra for Cd1-xZnxTe (CZT) slices. By comparing the values of these three indicators, four typical types of IR spectra are characterized for CZT crystals. The CZT crystals possessing the four types of IR spectra are different in microstructures, especially the densities and sizes of Te precipitates, the free carrier concentrations, and the resistivities. Mechanisms for the elimination of tiny and dense Te precipitates are given by analyzing the variation of the IR transmittance in the range of 500-5000 cm-1 during the annealing process.

Original languageEnglish
Pages (from-to)861-866
Number of pages6
JournalJournal of Electronic Materials
Volume33
Issue number8
DOIs
StatePublished - Aug 2004

Keywords

  • Annealing
  • CdZnTe (CZT)
  • IR transmittance
  • Te precipitates
  • The free carrier scattering effect

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