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

Devika Mudusu; Koteeswara Reddy Nandanapalli; Sreekantha Reddy Dugasani; Sung Ha Park; Charles W. Tu

doi:10.1038/srep28561

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

Devika Mudusu, Koteeswara Reddy Nandanapalli, Sreekantha Reddy Dugasani, Sung Ha Park, Charles W. Tu

Research output: Contribution to journal › Article › peer-review

26 Scopus citations

Abstract

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.

Original language	English
Article number	28561
Journal	Scientific Reports
Volume	6
DOIs	https://doi.org/10.1038/srep28561
State	Published - 23 Jun 2016
Externally published	Yes

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title = "Zinc Oxide Nanorods Shielded with an Ultrathin Nickel Layer: Tailoring of Physical Properties",

abstract = "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.",

author = "Devika Mudusu and Nandanapalli, \{Koteeswara Reddy\} and Dugasani, \{Sreekantha Reddy\} and Park, \{Sung Ha\} and Tu, \{Charles W.\}",

year = "2016",

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doi = "10.1038/srep28561",

language = "English",

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T1 - Zinc Oxide Nanorods Shielded with an Ultrathin Nickel Layer

T2 - Tailoring of Physical Properties

AU - Mudusu, Devika

AU - Nandanapalli, Koteeswara Reddy

AU - Dugasani, Sreekantha Reddy

AU - Park, Sung Ha

AU - Tu, Charles W.

PY - 2016/6/23

Y1 - 2016/6/23

N2 - 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.

AB - 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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DO - 10.1038/srep28561

M3 - Article

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SN - 2045-2322

VL - 6

JO - Scientific Reports

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ER -

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

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