Infrared spectroscopy of hg1-znte alloys

Ching Cherng Wu, Dong Yuan Chu, Cherng Yuan Sun, Tzuen-Rong Yang

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Infrared spectra, including transmission and reflection, have been used to characterize Hg1-xZnxTe crystals with various compositions x from cryostat temperature to room temperature. The energy band gap of the crystals were determined from the transmission spectra and their temperature dependence was observed. The reflection spectra of Hg1-xZnx crystals have been measured in the wave-number region of 60 to 450 cm-1. The frequencies of optical mode lattice vibrations are determined and their temperature dependence is discussed. A correlation between the HgTe lattice vibration TO mode and the electronic band structure of Hg1-xZnxTe alloys was found and the temperature dependence of electronic states for Hg1-xZnxTe can be explained well by a clustering effect in crystals.

Original languageEnglish
Pages (from-to)4687-4693
Number of pages7
JournalJapanese Journal of Applied Physics
Volume34
Issue number9R
DOIs
Publication statusPublished - 1995 Jan 1

Keywords

  • Infrared transmission and reflection spectra
  • Lattice vibration
  • Mercury-zinc-telluride
  • Temperature dependence of energy band gap

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

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