Surfactant and dopant addition effect on optical and structural properties of ZnSe (Te) nanostructured semiconductors

Autores
Valluzzi, Lucas Gabriel; Valluzzi, Marcos Gabriel; Damonte, Laura Cristina; Meyer, Marcos; Darriba, German Nicolas
Año de publicación
2020
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
ZnSe and ZnTe nanoparticles were obtained by mechanical milling. The influence of surfactant and doping agent addition on structural and optical properties were analyzed. X-ray diffraction (XRD) confirmed cubic crystalline structure is maintained for all milling times and the progressive substitutional incorporation of Al atoms into the Zn-based semiconductor structure. The agglomerate state of milled powders was disclosed by scanning electron microscopy (SEM), and Dispersion Light Scattering (DLS). Positron annihilation lifetime (PALS) spectroscopy allowed to identify the defects induced by mechanical work. A slight shift on the energy band gap with respect to pure semiconductor nanoparticles was revealed from optical diffuse reflectance measurements for all studied samples. The obtained results agree with first-principles calculations based on the Density Functional Theory (DFT). The calculations predict that Al substitute the Zn atom in the ZnTe and ZnSe lattice and a zinc vacancy must appear in order to recover the semiconductor character, as shown (or suggest) the experimental results. The characteristic positron annihilation lifetimes for the doped samples are obtained for both systems and compared with those measured. This theoretical approach helps us to deeper understand the origin and characteristics of different positrons traps.
Fil: Valluzzi, Lucas Gabriel. Universidad Nacional de Tierra del Fuego; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Valluzzi, Marcos Gabriel. Universidad Nacional de Tierra del Fuego; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Damonte, Laura Cristina. Universidad Nacional de La Plata. Facultad de Ciencias Exactas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Física La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Física La Plata; Argentina
Fil: Meyer, Marcos. Universidad Nacional de La Plata. Facultad de Ciencias Exactas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Física La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Física La Plata; Argentina
Fil: Darriba, German Nicolas. Universidad Nacional de La Plata. Facultad de Ciencias Exactas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Física La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Física La Plata; Argentina
Materia
FIRST PRINCIPLE CALCULATIONS
OPEN VOLUME DEFECTS
OPTICAL PROPERTIES
POSITRON ANNIHILATION
ZN-BASED NANO PARTICLES
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/145834
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/145834
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Surfactant and dopant addition effect on optical and structural properties of ZnSe (Te) nanostructured semiconductorsValluzzi, Lucas GabrielValluzzi, Marcos GabrielDamonte, Laura CristinaMeyer, MarcosDarriba, German NicolasFIRST PRINCIPLE CALCULATIONSOPEN VOLUME DEFECTSOPTICAL PROPERTIESPOSITRON ANNIHILATIONZN-BASED NANO PARTICLEShttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1ZnSe and ZnTe nanoparticles were obtained by mechanical milling. The influence of surfactant and doping agent addition on structural and optical properties were analyzed. X-ray diffraction (XRD) confirmed cubic crystalline structure is maintained for all milling times and the progressive substitutional incorporation of Al atoms into the Zn-based semiconductor structure. The agglomerate state of milled powders was disclosed by scanning electron microscopy (SEM), and Dispersion Light Scattering (DLS). Positron annihilation lifetime (PALS) spectroscopy allowed to identify the defects induced by mechanical work. A slight shift on the energy band gap with respect to pure semiconductor nanoparticles was revealed from optical diffuse reflectance measurements for all studied samples. The obtained results agree with first-principles calculations based on the Density Functional Theory (DFT). The calculations predict that Al substitute the Zn atom in the ZnTe and ZnSe lattice and a zinc vacancy must appear in order to recover the semiconductor character, as shown (or suggest) the experimental results. The characteristic positron annihilation lifetimes for the doped samples are obtained for both systems and compared with those measured. This theoretical approach helps us to deeper understand the origin and characteristics of different positrons traps.Fil: Valluzzi, Lucas Gabriel. Universidad Nacional de Tierra del Fuego; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Valluzzi, Marcos Gabriel. Universidad Nacional de Tierra del Fuego; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Damonte, Laura Cristina. Universidad Nacional de La Plata. Facultad de Ciencias Exactas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Física La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Física La Plata; ArgentinaFil: Meyer, Marcos. Universidad Nacional de La Plata. Facultad de Ciencias Exactas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Física La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Física La Plata; ArgentinaFil: Darriba, German Nicolas. Universidad Nacional de La Plata. Facultad de Ciencias Exactas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Física La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Física La Plata; ArgentinaElsevier Science SA2020-07info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/145834Valluzzi, Lucas Gabriel; Valluzzi, Marcos Gabriel; Damonte, Laura Cristina; Meyer, Marcos; Darriba, German Nicolas; Surfactant and dopant addition effect on optical and structural properties of ZnSe (Te) nanostructured semiconductors; Elsevier Science SA; Journal of Alloys and Compounds; 829; 154488; 7-2020; 1-100925-8388CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0925838820308513info:eu-repo/semantics/altIdentifier/doi/10.1016/j.jallcom.2020.154488info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T11:51:35Zoai:ri.conicet.gov.ar:11336/145834instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-10-22 11:51:35.678CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Surfactant and dopant addition effect on optical and structural properties of ZnSe (Te) nanostructured semiconductors
title Surfactant and dopant addition effect on optical and structural properties of ZnSe (Te) nanostructured semiconductors
spellingShingle Surfactant and dopant addition effect on optical and structural properties of ZnSe (Te) nanostructured semiconductors
Valluzzi, Lucas Gabriel
FIRST PRINCIPLE CALCULATIONS
OPEN VOLUME DEFECTS
OPTICAL PROPERTIES
POSITRON ANNIHILATION
ZN-BASED NANO PARTICLES
title_short Surfactant and dopant addition effect on optical and structural properties of ZnSe (Te) nanostructured semiconductors
title_full Surfactant and dopant addition effect on optical and structural properties of ZnSe (Te) nanostructured semiconductors
title_fullStr Surfactant and dopant addition effect on optical and structural properties of ZnSe (Te) nanostructured semiconductors
title_full_unstemmed Surfactant and dopant addition effect on optical and structural properties of ZnSe (Te) nanostructured semiconductors
title_sort Surfactant and dopant addition effect on optical and structural properties of ZnSe (Te) nanostructured semiconductors
dc.creator.none.fl_str_mv Valluzzi, Lucas Gabriel
Valluzzi, Marcos Gabriel
Damonte, Laura Cristina
Meyer, Marcos
Darriba, German Nicolas
author Valluzzi, Lucas Gabriel
author_facet Valluzzi, Lucas Gabriel
Valluzzi, Marcos Gabriel
Damonte, Laura Cristina
Meyer, Marcos
Darriba, German Nicolas
author_role author
author2 Valluzzi, Marcos Gabriel
Damonte, Laura Cristina
Meyer, Marcos
Darriba, German Nicolas
author2_role author
author
author
author
dc.subject.none.fl_str_mv FIRST PRINCIPLE CALCULATIONS
OPEN VOLUME DEFECTS
OPTICAL PROPERTIES
POSITRON ANNIHILATION
ZN-BASED NANO PARTICLES
topic FIRST PRINCIPLE CALCULATIONS
OPEN VOLUME DEFECTS
OPTICAL PROPERTIES
POSITRON ANNIHILATION
ZN-BASED NANO PARTICLES
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv ZnSe and ZnTe nanoparticles were obtained by mechanical milling. The influence of surfactant and doping agent addition on structural and optical properties were analyzed. X-ray diffraction (XRD) confirmed cubic crystalline structure is maintained for all milling times and the progressive substitutional incorporation of Al atoms into the Zn-based semiconductor structure. The agglomerate state of milled powders was disclosed by scanning electron microscopy (SEM), and Dispersion Light Scattering (DLS). Positron annihilation lifetime (PALS) spectroscopy allowed to identify the defects induced by mechanical work. A slight shift on the energy band gap with respect to pure semiconductor nanoparticles was revealed from optical diffuse reflectance measurements for all studied samples. The obtained results agree with first-principles calculations based on the Density Functional Theory (DFT). The calculations predict that Al substitute the Zn atom in the ZnTe and ZnSe lattice and a zinc vacancy must appear in order to recover the semiconductor character, as shown (or suggest) the experimental results. The characteristic positron annihilation lifetimes for the doped samples are obtained for both systems and compared with those measured. This theoretical approach helps us to deeper understand the origin and characteristics of different positrons traps.
Fil: Valluzzi, Lucas Gabriel. Universidad Nacional de Tierra del Fuego; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Valluzzi, Marcos Gabriel. Universidad Nacional de Tierra del Fuego; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Damonte, Laura Cristina. Universidad Nacional de La Plata. Facultad de Ciencias Exactas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Física La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Física La Plata; Argentina
Fil: Meyer, Marcos. Universidad Nacional de La Plata. Facultad de Ciencias Exactas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Física La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Física La Plata; Argentina
Fil: Darriba, German Nicolas. Universidad Nacional de La Plata. Facultad de Ciencias Exactas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Física La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Física La Plata; Argentina
description ZnSe and ZnTe nanoparticles were obtained by mechanical milling. The influence of surfactant and doping agent addition on structural and optical properties were analyzed. X-ray diffraction (XRD) confirmed cubic crystalline structure is maintained for all milling times and the progressive substitutional incorporation of Al atoms into the Zn-based semiconductor structure. The agglomerate state of milled powders was disclosed by scanning electron microscopy (SEM), and Dispersion Light Scattering (DLS). Positron annihilation lifetime (PALS) spectroscopy allowed to identify the defects induced by mechanical work. A slight shift on the energy band gap with respect to pure semiconductor nanoparticles was revealed from optical diffuse reflectance measurements for all studied samples. The obtained results agree with first-principles calculations based on the Density Functional Theory (DFT). The calculations predict that Al substitute the Zn atom in the ZnTe and ZnSe lattice and a zinc vacancy must appear in order to recover the semiconductor character, as shown (or suggest) the experimental results. The characteristic positron annihilation lifetimes for the doped samples are obtained for both systems and compared with those measured. This theoretical approach helps us to deeper understand the origin and characteristics of different positrons traps.
publishDate 2020
dc.date.none.fl_str_mv 2020-07
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/145834
Valluzzi, Lucas Gabriel; Valluzzi, Marcos Gabriel; Damonte, Laura Cristina; Meyer, Marcos; Darriba, German Nicolas; Surfactant and dopant addition effect on optical and structural properties of ZnSe (Te) nanostructured semiconductors; Elsevier Science SA; Journal of Alloys and Compounds; 829; 154488; 7-2020; 1-10
0925-8388
CONICET Digital
CONICET
url http://hdl.handle.net/11336/145834
identifier_str_mv Valluzzi, Lucas Gabriel; Valluzzi, Marcos Gabriel; Damonte, Laura Cristina; Meyer, Marcos; Darriba, German Nicolas; Surfactant and dopant addition effect on optical and structural properties of ZnSe (Te) nanostructured semiconductors; Elsevier Science SA; Journal of Alloys and Compounds; 829; 154488; 7-2020; 1-10
0925-8388
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0925838820308513
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.jallcom.2020.154488
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier Science SA
publisher.none.fl_str_mv Elsevier Science SA
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 12.982451

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