Energy gap versus alloy composition and temperature in Hg1 -xCdxTe

Junhao Chu; Shichou Xu; Dingyuan Tang

doi:10.1063/1.94237

Energy gap versus alloy composition and temperature in Hg₁ _-xCd_xTe

Junhao Chu^*
, Shichou Xu
, Dingyuan Tang

^*Corresponding author for this work

CAS - Shanghai Institute of Technical Physics

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

112 Scopus citations

Abstract

An empirical expression for the energy band gap E_g of Hg _1-xCd_xTe versus the temperature and alloy composition, deduced from optical absorption data for thin samples with different composition x, is reported as E_g =-0.295+1.87x-0.28x²+(6-14x+3x ²) (10^-4)T+0.35x⁴, which is applicable to the ranges of 0≤x≤0.37 (plus x=1) and 4.2≤T≤300 K. The values E_g of this expression are uniformly higher than the expressions of Hansen, Schmit, and Casselman. By comparing both expressions with the known magneto-optical experimental data at 4.2 and 24 K, we find that for this expression the standard error of estimate is 0.008 eV which is better than the expression of Hansen et al.

Original language	English
Pages (from-to)	1064-1066
Number of pages	3
Journal	Applied Physics Letters
Volume	43
Issue number	11
DOIs	https://doi.org/10.1063/1.94237
State	Published - 1983
Externally published	Yes

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title = "Energy gap versus alloy composition and temperature in Hg1 -xCdxTe",

abstract = "An empirical expression for the energy band gap Eg of Hg 1-xCdxTe versus the temperature and alloy composition, deduced from optical absorption data for thin samples with different composition x, is reported as Eg =-0.295+1.87x-0.28x2+(6-14x+3x 2) (10-4)T+0.35x4, which is applicable to the ranges of 0≤x≤0.37 (plus x=1) and 4.2≤T≤300 K. The values Eg of this expression are uniformly higher than the expressions of Hansen, Schmit, and Casselman. By comparing both expressions with the known magneto-optical experimental data at 4.2 and 24 K, we find that for this expression the standard error of estimate is 0.008 eV which is better than the expression of Hansen et al.",

author = "Junhao Chu and Shichou Xu and Dingyuan Tang",

year = "1983",

doi = "10.1063/1.94237",

language = "英语",

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pages = "1064--1066",

journal = "Applied Physics Letters",

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publisher = "American Institute of Physics",

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T1 - Energy gap versus alloy composition and temperature in Hg1 -xCdxTe

AU - Chu, Junhao

AU - Xu, Shichou

AU - Tang, Dingyuan

PY - 1983

Y1 - 1983

N2 - An empirical expression for the energy band gap Eg of Hg 1-xCdxTe versus the temperature and alloy composition, deduced from optical absorption data for thin samples with different composition x, is reported as Eg =-0.295+1.87x-0.28x2+(6-14x+3x 2) (10-4)T+0.35x4, which is applicable to the ranges of 0≤x≤0.37 (plus x=1) and 4.2≤T≤300 K. The values Eg of this expression are uniformly higher than the expressions of Hansen, Schmit, and Casselman. By comparing both expressions with the known magneto-optical experimental data at 4.2 and 24 K, we find that for this expression the standard error of estimate is 0.008 eV which is better than the expression of Hansen et al.

AB - An empirical expression for the energy band gap Eg of Hg 1-xCdxTe versus the temperature and alloy composition, deduced from optical absorption data for thin samples with different composition x, is reported as Eg =-0.295+1.87x-0.28x2+(6-14x+3x 2) (10-4)T+0.35x4, which is applicable to the ranges of 0≤x≤0.37 (plus x=1) and 4.2≤T≤300 K. The values Eg of this expression are uniformly higher than the expressions of Hansen, Schmit, and Casselman. By comparing both expressions with the known magneto-optical experimental data at 4.2 and 24 K, we find that for this expression the standard error of estimate is 0.008 eV which is better than the expression of Hansen et al.

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DO - 10.1063/1.94237

M3 - 文章

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SN - 0003-6951

VL - 43

SP - 1064

EP - 1066

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 11

ER -

Energy gap versus alloy composition and temperature in Hg₁ _-xCd_xTe

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