Structural and optical properties of ZnO and manganese-doped ZnO

The structural, morphological and optical properties of manganese oxides supported on commercial ZnO,prepared by impregnation with manganese nitrate, were investigated. The nominal compositions of Mnin the samples were 5, 10, 15 and 20%w/w.The X-ray diffraction (XRD) experiments revealed the presenc...

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Autores principales: Gallegos, María Victoria, Peluso, Miguel Andrés, Thomas, Horacio Jorge, Sambeth, Jorge Enrique, Damonte, Laura Cristina
Formato: Articulo Preprint
Lenguaje:Inglés
Publicado: 2016
Materias:
Química
Mn - ZnO
Structural properties
Optical properties
XPS
Band gap energy
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/97163
https://ri.conicet.gov.ar/11336/42024
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-97163
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Química
Mn - ZnO
Structural properties
Optical properties
XPS
Band gap energy
spellingShingle Química
Mn - ZnO
Structural properties
Optical properties
XPS
Band gap energy
Gallegos, María Victoria
Peluso, Miguel Andrés
Thomas, Horacio Jorge
Sambeth, Jorge Enrique
Damonte, Laura Cristina
Structural and optical properties of ZnO and manganese-doped ZnO
topic_facet Química
Mn - ZnO
Structural properties
Optical properties
XPS
Band gap energy
description The structural, morphological and optical properties of manganese oxides supported on commercial ZnO,prepared by impregnation with manganese nitrate, were investigated. The nominal compositions of Mnin the samples were 5, 10, 15 and 20%w/w.The X-ray diffraction (XRD) experiments revealed the presenceof the ZnO wurtzite phase in all the samples, and ZnMnO3 was also found in the samples with 15 wt% and20 wt% of Mn. X-ray photoelectron spectroscopy (XPS) showed the presence of Mn2þ and Mn4þ in thexMnZnO samples. The results showed that the Mn2þ ions had substituted the Zn2þ ions without changing the wurtzite structure of ZnO, while Mn4þ might be assigned to the ZnMnO3 impurity phase.The optical band gap was found to be 3.3 eV for undoped ZnO samples and 3.10 eV for Mn-doped samples. The lattice defect distribution was investigated using the positron annihilation method. The results revealed that the average lifetime is a function of the Mn concentration and the formation of theZnMnO3 phase.
format Articulo
Preprint
author Gallegos, María Victoria
Peluso, Miguel Andrés
Thomas, Horacio Jorge
Sambeth, Jorge Enrique
Damonte, Laura Cristina
author_facet Gallegos, María Victoria
Peluso, Miguel Andrés
Thomas, Horacio Jorge
Sambeth, Jorge Enrique
Damonte, Laura Cristina
author_sort Gallegos, María Victoria
title Structural and optical properties of ZnO and manganese-doped ZnO
title_short Structural and optical properties of ZnO and manganese-doped ZnO
title_full Structural and optical properties of ZnO and manganese-doped ZnO
title_fullStr Structural and optical properties of ZnO and manganese-doped ZnO
title_full_unstemmed Structural and optical properties of ZnO and manganese-doped ZnO
title_sort structural and optical properties of zno and manganese-doped zno
publishDate 2016
url http://sedici.unlp.edu.ar/handle/10915/97163
https://ri.conicet.gov.ar/11336/42024
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