Structural, electronic and optical properties for chalcopyrite semiconducting materials: ab-initio computational study

Auteurs :  Moufdi Hadjab, Miloud IBRIR, Smail BERRAH, Hamza ABID, Mohammad Alam Saeed
Année : 2018
Domaine : Electronique
Type : Article de journal
Revue : Optik – International Journal for Light and Electron Optics
Résumé en PDF :  (résumé en pdf)
Fulltext en PDF :  (.pdf)
Mots clés : Chalcopyrite, FP-LAPW, optical properties, Thin-films solar cells, wien2k

Résumé : 

Investigation of the physical properties of chalcopyrite materials using ab-initio methods have been carried out to simulate a new structure of thin-films photovoltaic cells with high conversion efficiency. The Density Functional Theory calculations have been performed using Wien2k computational package by employing the full-potential linearized augmented plane wave method. Structural and electronic properties of chalcopyrite semiconducting material Copper–Indium–Gallium–Selenium i.e. CuIn1-xGaxSe2 have been investigated using local density approximation for the exchange-correlation potential. The electronic structures and linear optical properties have been studied using both the semi-local Becke-Johnson potential and its modified form i.e. mBJ and TB-mBJ. Computational results are in good agreement with those acquired experimentally. The viability of alloys in realization of ultra-thin-film based (CIGS) solar cells with high performance has been proposed after simulation and analysis study using one of solar cell simulation tools. The studied material exhibits capability to become a promising candidate for fabrication of optoelectronic and photovoltaic devices.