Staff View: Cobalt doping induced shape transformation and its effect on luminescence in zinc oxide rod-like nanostructures

Cobalt doping induced shape transformation and its effect on luminescence in zinc oxide rod-like nanostructures

The structural and optical propertie of semiconducting oxide nanomaterials offer several possibilities for applications in photocatalytic activities, solar cells and gas sensing owing to their reduced dimensions and large surface/volume ratios as compared to their bulk counterparts. In this study, u...

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Main Authors:	Gaura, Lalit Kumar, Gairola, Preeti, Gairola, S.P., Mathpal, Mohan Chandra, Kumar, Promod, Kumar, Sachin, Kushavah, Dushyant, Agrahari, Vivek, Aragon, F. F. H., Soler, Maria Aparecida Godoy, Swart, Hendrik C.
Format:	Artigo
Language:	Inglês
Published:	Elsevier B. V. 2021
Subjects:	Nanoestruturas Óxido de zinco Luminescência Propriedades ópticas Raman, espectroscopia de
Online Access:	https://repositorio.unb.br/handle/10482/41268 https://doi.org/10.1016/j.jallcom.2021.159189
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spelling	ir-10482-412682021-06-23T15:32:48Z Cobalt doping induced shape transformation and its effect on luminescence in zinc oxide rod-like nanostructures Gaura, Lalit Kumar Gairola, Preeti Gairola, S.P. Mathpal, Mohan Chandra Kumar, Promod Kumar, Sachin Kushavah, Dushyant Agrahari, Vivek Aragon, F. F. H. Soler, Maria Aparecida Godoy Swart, Hendrik C. Nanoestruturas Óxido de zinco Luminescência Propriedades ópticas Raman, espectroscopia de The structural and optical propertie of semiconducting oxide nanomaterials offer several possibilities for applications in photocatalytic activities, solar cells and gas sensing owing to their reduced dimensions and large surface/volume ratios as compared to their bulk counterparts. In this study, undoped and Co doped ZnO nanostructures were prepared by a chemical co-precipitation method. The XRD patterns confirmed that all the samples were crystalline with a wurtzite hexagonal phase without forming any additional phases. A drastic change in the morphology from the transformation of spherically shaped nanoparticles (NP’s) to rod-like shaped NP’s after Co doping was revealed by SEM and TEM micrographs. Raman spectra confirmed the presence of a defect associated peak in Co doped ZnO NP’s. A direct correlation of change in surface morphology after Co doping was observed with PL emission, where near band edge emission in undoped ZnO was transformed into strong blue defect emission. 2021-06-23T15:29:08Z 2021-06-23T15:29:08Z 2021 Artigo GAURA, Lalit Kumar et al. Cobalt doping induced shape transformation and its effect on luminescence in zinc oxide rod-like nanostructures. Journal of Alloys and Compounds, v. 868, 159189, 5 jul. 2021. DOI: https://doi.org/10.1016/j.jallcom.2021.159189. https://repositorio.unb.br/handle/10482/41268 https://doi.org/10.1016/j.jallcom.2021.159189 Inglês https://www.sciencedirect.com/science/article/abs/pii/S0925838821005971?via%3Dihub Acesso Restrito Elsevier B. V.
institution	REPOSITORIO UNB
collection	REPOSITORIO UNB
language	Inglês
topic	Nanoestruturas Óxido de zinco Luminescência Propriedades ópticas Raman, espectroscopia de
spellingShingle	Nanoestruturas Óxido de zinco Luminescência Propriedades ópticas Raman, espectroscopia de Gaura, Lalit Kumar Gairola, Preeti Gairola, S.P. Mathpal, Mohan Chandra Kumar, Promod Kumar, Sachin Kushavah, Dushyant Agrahari, Vivek Aragon, F. F. H. Soler, Maria Aparecida Godoy Swart, Hendrik C. Cobalt doping induced shape transformation and its effect on luminescence in zinc oxide rod-like nanostructures
description	The structural and optical propertie of semiconducting oxide nanomaterials offer several possibilities for applications in photocatalytic activities, solar cells and gas sensing owing to their reduced dimensions and large surface/volume ratios as compared to their bulk counterparts. In this study, undoped and Co doped ZnO nanostructures were prepared by a chemical co-precipitation method. The XRD patterns confirmed that all the samples were crystalline with a wurtzite hexagonal phase without forming any additional phases. A drastic change in the morphology from the transformation of spherically shaped nanoparticles (NP’s) to rod-like shaped NP’s after Co doping was revealed by SEM and TEM micrographs. Raman spectra confirmed the presence of a defect associated peak in Co doped ZnO NP’s. A direct correlation of change in surface morphology after Co doping was observed with PL emission, where near band edge emission in undoped ZnO was transformed into strong blue defect emission.
format	Artigo
author	Gaura, Lalit Kumar Gairola, Preeti Gairola, S.P. Mathpal, Mohan Chandra Kumar, Promod Kumar, Sachin Kushavah, Dushyant Agrahari, Vivek Aragon, F. F. H. Soler, Maria Aparecida Godoy Swart, Hendrik C.
author_sort	Gaura, Lalit Kumar
title	Cobalt doping induced shape transformation and its effect on luminescence in zinc oxide rod-like nanostructures
title_short	Cobalt doping induced shape transformation and its effect on luminescence in zinc oxide rod-like nanostructures
title_full	Cobalt doping induced shape transformation and its effect on luminescence in zinc oxide rod-like nanostructures
title_fullStr	Cobalt doping induced shape transformation and its effect on luminescence in zinc oxide rod-like nanostructures
title_full_unstemmed	Cobalt doping induced shape transformation and its effect on luminescence in zinc oxide rod-like nanostructures
title_sort	cobalt doping induced shape transformation and its effect on luminescence in zinc oxide rod-like nanostructures
publisher	Elsevier B. V.
publishDate	2021
url	https://repositorio.unb.br/handle/10482/41268 https://doi.org/10.1016/j.jallcom.2021.159189
_version_	1710449465597362176
score	13.657419

Cobalt doping induced shape transformation and its effect on luminescence in zinc oxide rod-like nanostructures

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