Infrared spectroscopy of hg1-∞zn∞te alloys

Ching Cherng Wu; Dong Yuan Chu; Cherng Yuan Sun; Tzuen Rong Yang

doi:10.1143/JJAP.34.4687

Infrared spectroscopy of hg_1-_∞zn_∞te alloys

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

Department of Physics

Research output: Contribution to journal › Article › peer-review

4 Citations (Scopus)

Abstract

Infrared spectra, including transmission and reflection, have been used to characterize Hg_1-xZn_xTe 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 Hg_1-xZn_x 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 Hg_1-xZn_xTe alloys was found and the temperature dependence of electronic states for Hg_1-xZn_xTe can be explained well by a clustering effect in crystals.

Original language	English
Pages (from-to)	4687-4693
Number of pages	7
Journal	Japanese Journal of Applied Physics
Volume	34
Issue number	9R
DOIs	https://doi.org/10.1143/JJAP.34.4687
Publication status	Published - 1995 Sept

Keywords

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

ASJC Scopus subject areas

General Engineering
General Physics and Astronomy

Access to Document

10.1143/JJAP.34.4687

Cite this

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title = "Infrared spectroscopy of hg1-∞zn∞te alloys",

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.",

keywords = "Infrared transmission and reflection spectra, Lattice vibration, Mercury-zinc-telluride, Temperature dependence of energy band gap",

author = "Wu, {Ching Cherng} and Chu, {Dong Yuan} and Sun, {Cherng Yuan} and Yang, {Tzuen Rong}",

year = "1995",

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TY - JOUR

T1 - Infrared spectroscopy of hg1-∞zn∞te alloys

AU - Wu, Ching Cherng

AU - Chu, Dong Yuan

AU - Sun, Cherng Yuan

AU - Yang, Tzuen Rong

PY - 1995/9

Y1 - 1995/9

N2 - 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.

AB - 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.

KW - Infrared transmission and reflection spectra

KW - Lattice vibration

KW - Mercury-zinc-telluride

KW - Temperature dependence of energy band gap

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