Optical characterization of quaternary Zn1-x-yBexMgySe mixed crystals

We present an optical characterization of three Bridgman-grown Zn1-x-yBexMgySe mixed crystals in the near-band-edge interband transitions using temperature-dependent photoluminescence (PL), contactless electroreflectance (CER), and photoreflectance (PR) in the temperature range of 15–400 K and surf...

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Autores principales:	Dumcenco, Dumitru, Huang, Ying-Sheng, Tiong, Kwong-Kaw
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/134adb388af04eb58c791844ac0a434d
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spelling	oai:doaj.org-article:134adb388af04eb58c791844ac0a434d2021-11-21T12:04:35ZOptical characterization of quaternary Zn1-x-yBexMgySe mixed crystals2537-63651810-648Xhttps://doaj.org/article/134adb388af04eb58c791844ac0a434d2009-09-01T00:00:00Zhttps://mjps.nanotech.md/archive/2009/article/4147https://doaj.org/toc/1810-648Xhttps://doaj.org/toc/2537-6365We present an optical characterization of three Bridgman-grown Zn1-x-yBexMgySe mixed crystals in the near-band-edge interband transitions using temperature-dependent photoluminescence (PL), contactless electroreflectance (CER), and photoreflectance (PR) in the temperature range of 15–400 K and surface photovoltage spectroscopy (SPS) at room temperature. PL spectra at low temperature are characterized by the presence of clearly distinguished features, such as an excitonic line, an edge emission due to radiative recombination of shallow donor- acceptor pairs, and a broad band related to recombination through deep level defects. The peak positions of the excitonic emission lines in PL spectra correspond quite well to the energies of the fundamental transitions determined from CER, PR, and SPS measurements. Dumcenco, DumitruHuang, Ying-ShengTiong, Kwong-KawD.Ghitu Institute of Electronic Engineering and NanotechnologiesarticlePhysicsQC1-999ElectronicsTK7800-8360ENMoldavian Journal of the Physical Sciences, Vol 8, Iss 3-4, Pp 277-282 (2009)
institution	DOAJ
collection	DOAJ
language	EN
topic	Physics QC1-999 Electronics TK7800-8360
spellingShingle	Physics QC1-999 Electronics TK7800-8360 Dumcenco, Dumitru Huang, Ying-Sheng Tiong, Kwong-Kaw Optical characterization of quaternary Zn1-x-yBexMgySe mixed crystals
description	We present an optical characterization of three Bridgman-grown Zn1-x-yBexMgySe mixed crystals in the near-band-edge interband transitions using temperature-dependent photoluminescence (PL), contactless electroreflectance (CER), and photoreflectance (PR) in the temperature range of 15–400 K and surface photovoltage spectroscopy (SPS) at room temperature. PL spectra at low temperature are characterized by the presence of clearly distinguished features, such as an excitonic line, an edge emission due to radiative recombination of shallow donor- acceptor pairs, and a broad band related to recombination through deep level defects. The peak positions of the excitonic emission lines in PL spectra correspond quite well to the energies of the fundamental transitions determined from CER, PR, and SPS measurements.
format	article
author	Dumcenco, Dumitru Huang, Ying-Sheng Tiong, Kwong-Kaw
author_facet	Dumcenco, Dumitru Huang, Ying-Sheng Tiong, Kwong-Kaw
author_sort	Dumcenco, Dumitru
title	Optical characterization of quaternary Zn1-x-yBexMgySe mixed crystals
title_short	Optical characterization of quaternary Zn1-x-yBexMgySe mixed crystals
title_full	Optical characterization of quaternary Zn1-x-yBexMgySe mixed crystals
title_fullStr	Optical characterization of quaternary Zn1-x-yBexMgySe mixed crystals
title_full_unstemmed	Optical characterization of quaternary Zn1-x-yBexMgySe mixed crystals
title_sort	optical characterization of quaternary zn1-x-ybexmgyse mixed crystals
publisher	D.Ghitu Institute of Electronic Engineering and Nanotechnologies
publishDate	2009
url	https://doaj.org/article/134adb388af04eb58c791844ac0a434d
work_keys_str_mv	AT dumcencodumitru opticalcharacterizationofquaternaryzn1xybexmgysemixedcrystals AT huangyingsheng opticalcharacterizationofquaternaryzn1xybexmgysemixedcrystals AT tiongkwongkaw opticalcharacterizationofquaternaryzn1xybexmgysemixedcrystals
_version_	1718419227604418560

Optical characterization of quaternary Zn1-x-yBexMgySe mixed crystals

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