Exciton spectra and energy band structure of CuAlSe2 crystals

The main exciton parameters and the refined values of the energy intervals V1(Г7) - C1(Г6), V2(Г6) - C1(Г6) and V3(Г7) - C1(Г6) in CuAlSe2 crystals are discussed. The crystal field and spin-orbit splitting of the balance band are determined. The effective masses of electrons...

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Autores principales:	Sîrbu, Nicolae, Dorogan, Andrei, Maşnic, Alisa, Ursachi, Veaceslav
Formato:	article
Lenguaje:	EN
Publicado:	D.Ghitu Institute of Electronic Engineering and Nanotechnologies 2011
Materias:	Physics QC1-999 Electronics TK7800-8360
Acceso en línea:	https://doaj.org/article/599fc7271aac417ea6c0f1bb35819073
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id	oai:doaj.org-article:599fc7271aac417ea6c0f1bb35819073
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spelling	oai:doaj.org-article:599fc7271aac417ea6c0f1bb358190732021-11-21T12:02:19ZExciton spectra and energy band structure of CuAlSe2 crystals2537-63651810-648Xhttps://doaj.org/article/599fc7271aac417ea6c0f1bb358190732011-06-01T00:00:00Zhttps://mjps.nanotech.md/archive/2011/article/4330https://doaj.org/toc/1810-648Xhttps://doaj.org/toc/2537-6365The main exciton parameters and the refined values of the energy intervals V1(Г7) - C1(Г6), V2(Г6) - C1(Г6) and V3(Г7) - C1(Г6) in CuAlSe2 crystals are discussed. The crystal field and spin-orbit splitting of the balance band are determined. The effective masses of electrons (mC1), and holes (m V1, mV2, mV3) are estimated. The contours of reflectivity spectra at high photon energies (Е Еg) are calculated on the basis of Kramers-Kronig relations. The spectral dependences of the real and imaginary parts of the dielectric function, of the refractive indexes no, ne, and the absorption coefficient were determined. The experimental data are discussed on the basis of theoretical band structure calculations. Sîrbu, NicolaeDorogan, AndreiMaşnic, AlisaUrsachi, VeaceslavD.Ghitu Institute of Electronic Engineering and NanotechnologiesarticlePhysicsQC1-999ElectronicsTK7800-8360ENMoldavian Journal of the Physical Sciences, Vol 10, Iss 2, Pp 143-154 (2011)
institution	DOAJ
collection	DOAJ
language	EN
topic	Physics QC1-999 Electronics TK7800-8360
spellingShingle	Physics QC1-999 Electronics TK7800-8360 Sîrbu, Nicolae Dorogan, Andrei Maşnic, Alisa Ursachi, Veaceslav Exciton spectra and energy band structure of CuAlSe2 crystals
description	The main exciton parameters and the refined values of the energy intervals V1(Г7) - C1(Г6), V2(Г6) - C1(Г6) and V3(Г7) - C1(Г6) in CuAlSe2 crystals are discussed. The crystal field and spin-orbit splitting of the balance band are determined. The effective masses of electrons (mC1), and holes (m V1, mV2, mV3) are estimated. The contours of reflectivity spectra at high photon energies (Е Еg) are calculated on the basis of Kramers-Kronig relations. The spectral dependences of the real and imaginary parts of the dielectric function, of the refractive indexes no, ne, and the absorption coefficient were determined. The experimental data are discussed on the basis of theoretical band structure calculations.
format	article
author	Sîrbu, Nicolae Dorogan, Andrei Maşnic, Alisa Ursachi, Veaceslav
author_facet	Sîrbu, Nicolae Dorogan, Andrei Maşnic, Alisa Ursachi, Veaceslav
author_sort	Sîrbu, Nicolae
title	Exciton spectra and energy band structure of CuAlSe2 crystals
title_short	Exciton spectra and energy band structure of CuAlSe2 crystals
title_full	Exciton spectra and energy band structure of CuAlSe2 crystals
title_fullStr	Exciton spectra and energy band structure of CuAlSe2 crystals
title_full_unstemmed	Exciton spectra and energy band structure of CuAlSe2 crystals
title_sort	exciton spectra and energy band structure of cualse2 crystals
publisher	D.Ghitu Institute of Electronic Engineering and Nanotechnologies
publishDate	2011
url	https://doaj.org/article/599fc7271aac417ea6c0f1bb35819073
work_keys_str_mv	AT sirbunicolae excitonspectraandenergybandstructureofcualse2crystals AT doroganandrei excitonspectraandenergybandstructureofcualse2crystals AT masnicalisa excitonspectraandenergybandstructureofcualse2crystals AT ursachiveaceslav excitonspectraandenergybandstructureofcualse2crystals
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Exciton spectra and energy band structure of CuAlSe2 crystals

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