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

被引：22

作者：

Mudusu, Devika ^{[1
]}

Nandanapalli, Koteeswara Reddy ^{[1
,2
]}

Dugasani, Sreekantha Reddy ^{[3
,4
]}

Park, Sung Ha ^{[3
,4
]}

Tu, Charles W. ^{[1
,5
]}

机构：

[1] Gwangju Inst Sci & Technol, Dept Nanobiomat & Elect, Gwangju 500712, South Korea

[2] BML Munjal Univ, Sch Engn & Technol, Dept Phys, Gurgaon 122413, Haryana, India

[3] Sungkyunkwan Univ, Dept Phys, Suwon 440746, South Korea

[4] Sungkyunkwan Univ, Sungkyunkwan Adv Inst Nanotechnol SAINT, Suwon 440746, South Korea

[5] Univ Calif San Diego, Dept Elect & Comp Engn, La Jolla, CA 92093 USA

来源：

SCIENTIFIC REPORTS | 2016年 / 6卷

基金：

新加坡国家研究基金会;

关键词：

ZNO THIN-FILMS; SHELL NANOSTRUCTURES; GROWTH; TEMPERATURE; HETEROSTRUCTURE; NANOPARTICLES; MECHANISM; ELECTRODE; ARRAYS;

D O I：

10.1038/srep28561

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

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 degrees 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.

引用

页数：8

共 49 条

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