Preparation and optical properties of lamellar GaSe-ZnSe nanocomposites

ZnSe-GaSe nanocomposite plates photoluminescent in a photon energy range of 1.80−2.64 eV were obtained via exposing GaSe single-crystal plates to a Zn-vapor heat treatment at temperatures of 673−873 K. The photoluminescence spectrum is dominated by the self-activated emission band of ZnSe with a max...

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Autores principales:	Caraman, Mihail, Untila, Dumitru, Canţer, Valeriu, Evtodiev, Igor, Caraman, Iuliana, Sușu, Oana, Leontie, Liviu
Formato:	article
Lenguaje:	EN
Publicado:	D.Ghitu Institute of Electronic Engineering and Nanotechnologies 2015
Materias:	Physics QC1-999 Electronics TK7800-8360
Acceso en línea:	https://doaj.org/article/0b13fedd9fbe4a269ca46c01e226258c
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spelling	oai:doaj.org-article:0b13fedd9fbe4a269ca46c01e226258c2021-11-21T11:58:31ZPreparation and optical properties of lamellar GaSe-ZnSe nanocomposites536.421.5+5352537-63651810-648Xhttps://doaj.org/article/0b13fedd9fbe4a269ca46c01e226258c2015-11-01T00:00:00Zhttps://mjps.nanotech.md/archive/2015/article/43390https://doaj.org/toc/1810-648Xhttps://doaj.org/toc/2537-6365ZnSe-GaSe nanocomposite plates photoluminescent in a photon energy range of 1.80−2.64 eV were obtained via exposing GaSe single-crystal plates to a Zn-vapor heat treatment at temperatures of 673−873 K. The photoluminescence spectrum is dominated by the self-activated emission band of ZnSe with a maximum at 2.04 eV. The average size of the ZnSe crystallites is ~45 nm. The absorption spectrum of the composite consists of two regions characteristic of direct optical transitions in GaSe crystals with a band gap of 1.99 eV and ZnSe crystallites with a band gap of 2.56 eV at room temperature. Caraman, MihailUntila, DumitruCanţer, ValeriuEvtodiev, IgorCaraman, IulianaSușu, OanaLeontie, LiviuD.Ghitu Institute of Electronic Engineering and NanotechnologiesarticlePhysicsQC1-999ElectronicsTK7800-8360ENMoldavian Journal of the Physical Sciences, Vol 14, Iss 1-2, Pp 61-68 (2015)
institution	DOAJ
collection	DOAJ
language	EN
topic	Physics QC1-999 Electronics TK7800-8360
spellingShingle	Physics QC1-999 Electronics TK7800-8360 Caraman, Mihail Untila, Dumitru Canţer, Valeriu Evtodiev, Igor Caraman, Iuliana Sușu, Oana Leontie, Liviu Preparation and optical properties of lamellar GaSe-ZnSe nanocomposites
description	ZnSe-GaSe nanocomposite plates photoluminescent in a photon energy range of 1.80−2.64 eV were obtained via exposing GaSe single-crystal plates to a Zn-vapor heat treatment at temperatures of 673−873 K. The photoluminescence spectrum is dominated by the self-activated emission band of ZnSe with a maximum at 2.04 eV. The average size of the ZnSe crystallites is ~45 nm. The absorption spectrum of the composite consists of two regions characteristic of direct optical transitions in GaSe crystals with a band gap of 1.99 eV and ZnSe crystallites with a band gap of 2.56 eV at room temperature.
format	article
author	Caraman, Mihail Untila, Dumitru Canţer, Valeriu Evtodiev, Igor Caraman, Iuliana Sușu, Oana Leontie, Liviu
author_facet	Caraman, Mihail Untila, Dumitru Canţer, Valeriu Evtodiev, Igor Caraman, Iuliana Sușu, Oana Leontie, Liviu
author_sort	Caraman, Mihail
title	Preparation and optical properties of lamellar GaSe-ZnSe nanocomposites
title_short	Preparation and optical properties of lamellar GaSe-ZnSe nanocomposites
title_full	Preparation and optical properties of lamellar GaSe-ZnSe nanocomposites
title_fullStr	Preparation and optical properties of lamellar GaSe-ZnSe nanocomposites
title_full_unstemmed	Preparation and optical properties of lamellar GaSe-ZnSe nanocomposites
title_sort	preparation and optical properties of lamellar gase-znse nanocomposites
publisher	D.Ghitu Institute of Electronic Engineering and Nanotechnologies
publishDate	2015
url	https://doaj.org/article/0b13fedd9fbe4a269ca46c01e226258c
work_keys_str_mv	AT caramanmihail preparationandopticalpropertiesoflamellargaseznsenanocomposites AT untiladumitru preparationandopticalpropertiesoflamellargaseznsenanocomposites AT cantervaleriu preparationandopticalpropertiesoflamellargaseznsenanocomposites AT evtodievigor preparationandopticalpropertiesoflamellargaseznsenanocomposites AT caramaniuliana preparationandopticalpropertiesoflamellargaseznsenanocomposites AT susuoana preparationandopticalpropertiesoflamellargaseznsenanocomposites AT leontieliviu preparationandopticalpropertiesoflamellargaseznsenanocomposites
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Preparation and optical properties of lamellar GaSe-ZnSe nanocomposites

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