Influence Ca-doped SrIn2O4 powders on photoluminescence property prepared one step by ultrasonic spray pyrolysis

Crystalline Ca-doped SrIn2O4 structures were prepared by a rapid and efficient Ultrasonic Pyrolysis Spray (USP) method. The Sr1-xCaxIn2O4 (x = 0, 0.1, 0.2, 0.3, 0.4 and 1 mol %) samples were obtained by in a single step at a temperature of 1050oC for 1 min for the formation of particles. The powders...

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Principais autores: Medeiros, P. N., Santiago, Anderson de Azevedo Gomes, Ferreira, Erik Alexander Cunha, Li, Maximo Siu, Silva, Elson Longo da, Delmonte, Maurício Roberto Bomio, Motta, Fabiana Villela da
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Idioma:English
Publicado em: Elsevier
Assuntos:
Ultrasonic spray pyrolysis
Indate
Strontium
Optical Properties
Photoluminescence
Endereço do item:https://repositorio.ufrn.br/handle/123456789/43766
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spelling ri-123456789-437662021-10-08T21:42:00Z Influence Ca-doped SrIn2O4 powders on photoluminescence property prepared one step by ultrasonic spray pyrolysis Medeiros, P. N. Santiago, Anderson de Azevedo Gomes Ferreira, Erik Alexander Cunha Li, Maximo Siu Silva, Elson Longo da Delmonte, Maurício Roberto Bomio Motta, Fabiana Villela da Ultrasonic spray pyrolysis Indate Strontium Optical Properties Photoluminescence Crystalline Ca-doped SrIn2O4 structures were prepared by a rapid and efficient Ultrasonic Pyrolysis Spray (USP) method. The Sr1-xCaxIn2O4 (x = 0, 0.1, 0.2, 0.3, 0.4 and 1 mol %) samples were obtained by in a single step at a temperature of 1050oC for 1 min for the formation of particles. The powders were characterized by X-ray diffraction (XRD), field emission electron microscopy (SEM-FEG), optical diffuse reflectance and photoluminescence (PL) measurements. All diffraction peaks present in XRD patterns could be indexed to the orthorhombic structure and that with calcium percentage increments indicates the substitution of Ca2+ in the Sr2+ sites promotes a decrease in its lattice parameters of the structure. MEV-FEG images show that the Sr1- xCaxIn2O4 particles have a spherical predominance, with a porous surface in the form of foam for x = 0 and a surface with low roughness and low porosity with an increase in the percentage of Ca2+ ion, especially for the 1 mol % of Ca2+. The gap energy varied between 4.56 eV and 4.86 eV, being influenced by the structural modifications motivated by increase of Ca2+ ion contained in the SrIn2O4 matrix. The PL emission spectrum of the samples presents a broad band behavior with emission intensity predominant in the blue-green region, having the sample with x = 0.1 the highest PL intensity. The chromaticity coordinates were calculated for the sample based on the PL spectrum and coordinates x and y show that the samples have blue emission. Ultrasonic spray pyrolysis was an effective technique for Ca-doped SrInO4 powder production using short production times with hold great potential for photoluminescent emitters 2021-10-08T21:41:58Z 2021-10-08T21:41:58Z 2018-05-30 article MEDEIROS, P.N.; SANTIAGO, A.A.G.; FERREIRA, E.A.C.; LI, M.s.; LONGO, E.; BOMIO, M.R.D.; MOTTA, F.V.. Influence Ca-doped SrIn2O4 powders on photoluminescence property prepared one step by ultrasonic spray pyrolysis. Journal of Alloys And Compounds, [S.L.], v. 747, p. 1078-1087, maio 2018. Disponível em: https://www.sciencedirect.com/science/article/abs/pii/S0925838818309575?via%3Dihub. Acesso em: 19 mar. 2021. http://dx.doi.org/10.1016/j.jallcom.2018.03.090. 0925-8388 https://repositorio.ufrn.br/handle/123456789/43766 10.1016/j.jallcom.2018.03.090 en Attribution 3.0 Brazil http://creativecommons.org/licenses/by/3.0/br/ application/pdf Elsevier
institution Repositório Institucional
collection RI - UFRN
language English
topic Ultrasonic spray pyrolysis
Indate
Strontium
Optical Properties
Photoluminescence
spellingShingle Ultrasonic spray pyrolysis
Indate
Strontium
Optical Properties
Photoluminescence
Medeiros, P. N.
Santiago, Anderson de Azevedo Gomes
Ferreira, Erik Alexander Cunha
Li, Maximo Siu
Silva, Elson Longo da
Delmonte, Maurício Roberto Bomio
Motta, Fabiana Villela da
Influence Ca-doped SrIn2O4 powders on photoluminescence property prepared one step by ultrasonic spray pyrolysis
description Crystalline Ca-doped SrIn2O4 structures were prepared by a rapid and efficient Ultrasonic Pyrolysis Spray (USP) method. The Sr1-xCaxIn2O4 (x = 0, 0.1, 0.2, 0.3, 0.4 and 1 mol %) samples were obtained by in a single step at a temperature of 1050oC for 1 min for the formation of particles. The powders were characterized by X-ray diffraction (XRD), field emission electron microscopy (SEM-FEG), optical diffuse reflectance and photoluminescence (PL) measurements. All diffraction peaks present in XRD patterns could be indexed to the orthorhombic structure and that with calcium percentage increments indicates the substitution of Ca2+ in the Sr2+ sites promotes a decrease in its lattice parameters of the structure. MEV-FEG images show that the Sr1- xCaxIn2O4 particles have a spherical predominance, with a porous surface in the form of foam for x = 0 and a surface with low roughness and low porosity with an increase in the percentage of Ca2+ ion, especially for the 1 mol % of Ca2+. The gap energy varied between 4.56 eV and 4.86 eV, being influenced by the structural modifications motivated by increase of Ca2+ ion contained in the SrIn2O4 matrix. The PL emission spectrum of the samples presents a broad band behavior with emission intensity predominant in the blue-green region, having the sample with x = 0.1 the highest PL intensity. The chromaticity coordinates were calculated for the sample based on the PL spectrum and coordinates x and y show that the samples have blue emission. Ultrasonic spray pyrolysis was an effective technique for Ca-doped SrInO4 powder production using short production times with hold great potential for photoluminescent emitters
format article
author Medeiros, P. N.
Santiago, Anderson de Azevedo Gomes
Ferreira, Erik Alexander Cunha
Li, Maximo Siu
Silva, Elson Longo da
Delmonte, Maurício Roberto Bomio
Motta, Fabiana Villela da
author_facet Medeiros, P. N.
Santiago, Anderson de Azevedo Gomes
Ferreira, Erik Alexander Cunha
Li, Maximo Siu
Silva, Elson Longo da
Delmonte, Maurício Roberto Bomio
Motta, Fabiana Villela da
author_sort Medeiros, P. N.
title Influence Ca-doped SrIn2O4 powders on photoluminescence property prepared one step by ultrasonic spray pyrolysis
title_short Influence Ca-doped SrIn2O4 powders on photoluminescence property prepared one step by ultrasonic spray pyrolysis
title_full Influence Ca-doped SrIn2O4 powders on photoluminescence property prepared one step by ultrasonic spray pyrolysis
title_fullStr Influence Ca-doped SrIn2O4 powders on photoluminescence property prepared one step by ultrasonic spray pyrolysis
title_full_unstemmed Influence Ca-doped SrIn2O4 powders on photoluminescence property prepared one step by ultrasonic spray pyrolysis
title_sort influence ca-doped srin2o4 powders on photoluminescence property prepared one step by ultrasonic spray pyrolysis
publisher Elsevier
publishDate 2021
url https://repositorio.ufrn.br/handle/123456789/43766
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