Optical properties and electronic structure of polycrystalline Cu-(In Ga)-Se alloys

The optical properties of bulk Cu-(In Ga )-Se alloys grown by the Bridgman metho are presented. The optical measurements were performed at room temperature in the photo energy range from 0.8 to 4.7eV using a variable-angle spectroscopic ellipsometer. The spec tral dependences of the complex dielec...

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Autores principales:	Leon, Maximo, Levcenco, Sergiu, Merino, Jose Manuel, Friedrich, E., Aruşanov, Ernest
Formato:	article
Lenguaje:	EN
Publicado:	D.Ghitu Institute of Electronic Engineering and Nanotechnologies 2009
Materias:	Physics QC1-999 Electronics TK7800-8360
Acceso en línea:	https://doaj.org/article/11c37694cfef4ef6acf6fcd98009f154
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spelling	oai:doaj.org-article:11c37694cfef4ef6acf6fcd98009f1542021-11-21T12:05:50ZOptical properties and electronic structure of polycrystalline Cu-(In Ga)-Se alloys2537-63651810-648Xhttps://doaj.org/article/11c37694cfef4ef6acf6fcd98009f1542009-02-01T00:00:00Zhttps://mjps.nanotech.md/archive/2009/article/4020https://doaj.org/toc/1810-648Xhttps://doaj.org/toc/2537-6365The optical properties of bulk Cu-(In Ga )-Se alloys grown by the Bridgman metho are presented. The optical measurements were performed at room temperature in the photo energy range from 0.8 to 4.7eV using a variable-angle spectroscopic ellipsometer. The spec tral dependences of the complex dielectric function, the refractive index, the absorption coe ficient and the normal-incidence reflectivity were derived. The observed structures attribute to the interband transitions E0 , E1A , and E1B were modelled using a modification of the Ada chi’s model. The model parameters were determined using the simulated annealing (SA) algo rithm. The values of E0 and E1A were found to increase linearly with Ga content. Leon, MaximoLevcenco, SergiuMerino, Jose ManuelFriedrich, E.Aruşanov, ErnestD.Ghitu Institute of Electronic Engineering and NanotechnologiesarticlePhysicsQC1-999ElectronicsTK7800-8360ENMoldavian Journal of the Physical Sciences, Vol 8, Iss 1, Pp 54-62 (2009)
institution	DOAJ
collection	DOAJ
language	EN
topic	Physics QC1-999 Electronics TK7800-8360
spellingShingle	Physics QC1-999 Electronics TK7800-8360 Leon, Maximo Levcenco, Sergiu Merino, Jose Manuel Friedrich, E. Aruşanov, Ernest Optical properties and electronic structure of polycrystalline Cu-(In Ga)-Se alloys
description	The optical properties of bulk Cu-(In Ga )-Se alloys grown by the Bridgman metho are presented. The optical measurements were performed at room temperature in the photo energy range from 0.8 to 4.7eV using a variable-angle spectroscopic ellipsometer. The spec tral dependences of the complex dielectric function, the refractive index, the absorption coe ficient and the normal-incidence reflectivity were derived. The observed structures attribute to the interband transitions E0 , E1A , and E1B were modelled using a modification of the Ada chi’s model. The model parameters were determined using the simulated annealing (SA) algo rithm. The values of E0 and E1A were found to increase linearly with Ga content.
format	article
author	Leon, Maximo Levcenco, Sergiu Merino, Jose Manuel Friedrich, E. Aruşanov, Ernest
author_facet	Leon, Maximo Levcenco, Sergiu Merino, Jose Manuel Friedrich, E. Aruşanov, Ernest
author_sort	Leon, Maximo
title	Optical properties and electronic structure of polycrystalline Cu-(In Ga)-Se alloys
title_short	Optical properties and electronic structure of polycrystalline Cu-(In Ga)-Se alloys
title_full	Optical properties and electronic structure of polycrystalline Cu-(In Ga)-Se alloys
title_fullStr	Optical properties and electronic structure of polycrystalline Cu-(In Ga)-Se alloys
title_full_unstemmed	Optical properties and electronic structure of polycrystalline Cu-(In Ga)-Se alloys
title_sort	optical properties and electronic structure of polycrystalline cu-(in ga)-se alloys
publisher	D.Ghitu Institute of Electronic Engineering and Nanotechnologies
publishDate	2009
url	https://doaj.org/article/11c37694cfef4ef6acf6fcd98009f154
work_keys_str_mv	AT leonmaximo opticalpropertiesandelectronicstructureofpolycrystallinecuingasealloys AT levcencosergiu opticalpropertiesandelectronicstructureofpolycrystallinecuingasealloys AT merinojosemanuel opticalpropertiesandelectronicstructureofpolycrystallinecuingasealloys AT friedriche opticalpropertiesandelectronicstructureofpolycrystallinecuingasealloys AT arusanovernest opticalpropertiesandelectronicstructureofpolycrystallinecuingasealloys
_version_	1718419227415674880

Optical properties and electronic structure of polycrystalline Cu-(In Ga)-Se alloys

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