Authors: Yandjah L., Bechiri L., Benabdeslem M., Benslim N., Amara A., Portier X., Bououdina M., Ziani A.
Author Affiliations: Yandjah, L., LPMR, Department of Material Sciences, Faculty of Science and Technology, Univ-Souk-Ahras41000, Algeria; Bechiri, L., (LESIMS)-(LEREC), Département de Physique, Faculté des Sciences, Univ-Badji Mokhtar, Annaba, Algeria; Benabdeslem, M., (LESIMS)-(LEREC), Département de Physique, Faculté des Sciences, Univ-Badji Mokhtar, Annaba, Algeria; Benslim, N., (LESIMS)-(LEREC), Département de Physique, Faculté des Sciences, Univ-Badji Mokhtar, Annaba, Algeria; Amara, A., (LESIMS)-(LEREC), Département de Physique, Faculté des Sciences, Univ-Badji Mokhtar, Annaba, Algeria; Portier, X., CIMAP, Centre de recherche sur les ions, les matériaux et la photonique, CEA, UMR 6252 CNRS, ENSICAEN, UCBN, 6-Boulevard du Maréchal Juin, Caen Cedex, 14050, France; Bououdina, M., Department of Physics, College of Science, University of Bahrain, PO Box 32038, Bahrain; Ziani, A., KAUST Catalysis Center (KCC), Catalysis for Energy Conversion Team (CATEC)., Building 3, Level 4, Office number 4288-WS10, 4700 KAUST Thuwal23955–6900, Saudi Arabia
Publication Date: 2018
Polycrystalline CuIn0.5Ga0.5Te2 films were deposited by flash evaporation from ingot prepared by reacting, in stoichiometric proportions, high purity Cu, In, Ga and Te elements in vacuum sealed quartz. The as-obtained films were characterized by X – ray diffraction (XRD), transmission electron microscopy (TEM) combined with energy dispersive spectroscopy (EDS). XRD and TEM results showed that the layer has a chalcopyrite-type structure, predominantly oriented along (112) planes, with lattice parameters a = 0.61 nm and c = 1.22 nm. The optical properties in the near – infrared and visible range 600–2400 nm have been studied. The analysis of absorption coefficient yielded an energy gap value of 1.27 eV. Photoluminescence analysis of as-grown sample shows two main emission peaks located at 0.87 and 1.19 eV at 4 K. © 2018 The Physical Society of the Republic of China (Taiwan)
Eshan2020-11-28T18:54:01+00:00
