Zinc Oxide Nanorods Shielded with an Ultrathin Nickel Layer: Tailoring of Physical Properties

We report on the development of Ni-shielded ZnO nanorod (NR) structures and the impact of the Ni layer on the ZnO NR properties. We developed nickel-capped zinc oxide nanorod (ZnO/Ni NR) structures by e-beam evaporation of Ni and the subsequent annealing of the ZnO/Ni core/shell nanostructures. The...

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Autores principales: Mudusu, Devika, Nandanapalli, Koteeswara Reddy, Dugasani, Sreekantha Reddy, Park, Sung Ha, Tu, Charles W.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2016
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4917843/
https://www.ncbi.nlm.nih.gov/pubmed/27334555
http://dx.doi.org/10.1038/srep28561
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author Mudusu, Devika
Nandanapalli, Koteeswara Reddy
Dugasani, Sreekantha Reddy
Park, Sung Ha
Tu, Charles W.
author_facet Mudusu, Devika
Nandanapalli, Koteeswara Reddy
Dugasani, Sreekantha Reddy
Park, Sung Ha
Tu, Charles W.
author_sort Mudusu, Devika
collection PubMed
description We report on the development of Ni-shielded ZnO nanorod (NR) structures and the impact of the Ni layer on the ZnO NR properties. We developed nickel-capped zinc oxide nanorod (ZnO/Ni NR) structures by e-beam evaporation of Ni and the subsequent annealing of the ZnO/Ni core/shell nanostructures. The core/shell NRs annealed at 400 °C showed superior crystalline and emission properties. More interestingly, with the increase of annealing temperature, the crystallinity of the Ni shells over the ZnO NRs gradually changed from polycrystalline to single crystalline. The presence of the Ni layer as a polycrystalline shell completely hindered the light emission and transmission of the ZnO NR cores. Further, the band gap of ZnO NRs continuously decreased with the increase of annealing temperature.
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spelling pubmed-49178432016-06-27 Zinc Oxide Nanorods Shielded with an Ultrathin Nickel Layer: Tailoring of Physical Properties Mudusu, Devika Nandanapalli, Koteeswara Reddy Dugasani, Sreekantha Reddy Park, Sung Ha Tu, Charles W. Sci Rep Article We report on the development of Ni-shielded ZnO nanorod (NR) structures and the impact of the Ni layer on the ZnO NR properties. We developed nickel-capped zinc oxide nanorod (ZnO/Ni NR) structures by e-beam evaporation of Ni and the subsequent annealing of the ZnO/Ni core/shell nanostructures. The core/shell NRs annealed at 400 °C showed superior crystalline and emission properties. More interestingly, with the increase of annealing temperature, the crystallinity of the Ni shells over the ZnO NRs gradually changed from polycrystalline to single crystalline. The presence of the Ni layer as a polycrystalline shell completely hindered the light emission and transmission of the ZnO NR cores. Further, the band gap of ZnO NRs continuously decreased with the increase of annealing temperature. Nature Publishing Group 2016-06-23 /pmc/articles/PMC4917843/ /pubmed/27334555 http://dx.doi.org/10.1038/srep28561 Text en Copyright © 2016, Macmillan Publishers Limited http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
spellingShingle Article
Mudusu, Devika
Nandanapalli, Koteeswara Reddy
Dugasani, Sreekantha Reddy
Park, Sung Ha
Tu, Charles W.
Zinc Oxide Nanorods Shielded with an Ultrathin Nickel Layer: Tailoring of Physical Properties
title Zinc Oxide Nanorods Shielded with an Ultrathin Nickel Layer: Tailoring of Physical Properties
title_full Zinc Oxide Nanorods Shielded with an Ultrathin Nickel Layer: Tailoring of Physical Properties
title_fullStr Zinc Oxide Nanorods Shielded with an Ultrathin Nickel Layer: Tailoring of Physical Properties
title_full_unstemmed Zinc Oxide Nanorods Shielded with an Ultrathin Nickel Layer: Tailoring of Physical Properties
title_short Zinc Oxide Nanorods Shielded with an Ultrathin Nickel Layer: Tailoring of Physical Properties
title_sort zinc oxide nanorods shielded with an ultrathin nickel layer: tailoring of physical properties
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4917843/
https://www.ncbi.nlm.nih.gov/pubmed/27334555
http://dx.doi.org/10.1038/srep28561
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