"

Cookies ussage consent

Our site saves small pieces of text information (cookies) on your device in order to deliver better content and for statistical purposes. You can disable the usage of cookies by changing the settings of your browser. By browsing our site without changing the browser settings you grant us permission to store that information on your device.

I agree, do not show this message again.

Pressure dependence of electronic and optical properties of zincblende BP, BAs and BSb compounds

S. LABIDI1, H. MERADJI1,* , S. GHEMID1, S. MEÇABIH2, B. ABBAR2

Affiliation

  1. Laboratoire LPR, Département de Physique, Faculté des Sciences, Université de Annaba, Algeria
  2. Laboratoire LMSSM, Département de Physique, Faculté des Sciences, Université de Sidi Bel Abbès, Algeria

Abstract

We have performed first-principles full-potential linearized augmented-plane wave calculations with density functional theory in generalized gradient approximation, in aim to determine and predict the pressure dependence of energy band gaps and optical properties of BP, BAs and BSb compounds. First we present the main features of electronic properties, where the electronic band structure shows that the fundamental energy gap is indirect near X ( X15v ® D min ).The trends of the band gap pressure coefficients for these III-V compounds are investigated. The linear pressure coefficients compare well with previous theoretical results. The accurate calculation of linear optical function (refractive index and its pressure derivative, and the real part of dielectric function) is performed in the photon energy range up to 30 eV. Also, we have investigated the pressure dependence of the static dielectric function. The refractive index and its variation with hydrostatic pressure are well described. The predicted optical constants agree well with the available theoretical ones..

Keywords

First principles calculations, Band gap, Pressure coefficients, Refractive index, Dielectric function.

Submitted at: June 1, 2009
Accepted at: July 23, 2009

Citation

S. LABIDI, H. MERADJI, S. GHEMID, S. MEÇABIH, B. ABBAR, Pressure dependence of electronic and optical properties of zincblende BP, BAs and BSb compounds, Journal of Optoelectronics and Advanced Materials Vol. 11, Iss. 7, pp. 994-1001 (2009)