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
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/145834
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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 Técnicas2025-09-29T10:18:51Zoai: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:34982025-09-29 10:18:51.636CONICET 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 |
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CONICET Digital (CONICET) |
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Consejo Nacional de Investigaciones Científicas y Técnicas |
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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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13.070432 |