Growth and great UV emission improvement of highly crystalline quality core-shell ZnO/MgO nanowires

被引：19
|
作者：
Wu, Y. [1 ]
Wu, W. [2 ]
Zou, X. M. [1 ]
Xu, L. [1 ]
Li, J. C. [1 ]
机构：
[1] Wuhan Univ, Sch Phys & Technol, Minist Educ, Key Lab Artificial Micro & Nanostruct, Wuhan 430072, Peoples R China
[2] Wuhan Univ, Sch Chem & Mol Sci, Sch Printing & Packaging, Wuhan 430072, Peoples R China
来源：
MATERIALS LETTERS | 2012年 / 84卷
基金：
中国国家自然科学基金;
关键词：
Nanocrystalline materials; Epitaxial growth; Crystal structure; Luminescence; ZNO NANOWIRES; PHOTOLUMINESCENCE;
D O I：
10.1016/j.matlet.2012.06.081
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The highly crystalline core-shell ZnO/MgO nanowires (NWs) were achieved by using a two-step CVD method. The related crystal growth model is proposed. The epitaxial growth of cubic MgO shells on the surfaces of hexagonal ZnO NWs benefits from the close interplanar distances of MgO (111) and ZnO (0002) planes. Comparing with bare ZnO NWs, more than 10 times enhancement of ultraviolet (UV) emission intensity is obtained from ZnO/MgO NWs with a shell thickness of 25 nm, owing to the improvement of crystal quality of ZnO NWs surface layers and the passivation of remained surface defects after forming high crystallization MgO shells. (C) 2012 Elsevier B.V. All rights reserved.
引用
收藏
页码：147 / 150
页数：4
相关论文
共 50 条
  • [31] Enhanced field emission properties of ZnO-Ag2S core-shell heterojunction nanowires
    Wang, Guojing
    Li, Mingyang
    Chen, Chienhua
    Lv, Shasha
    Liao, Jiecui
    Li, Zhengcao
    DALTON TRANSACTIONS, 2016, 45 (21) : 8777 - 8782
  • [32] Helical crystalline SiC/SiO2 core-shell nanowires
    Zhang, HF
    Wang, CM
    Wang, LS
    NANO LETTERS, 2002, 2 (09) : 941 - 944
  • [33] Abnormal blueshift of UV emission in single-crystalline ZnO nanowires
    Wang, Dandan
    Yang, Jinghai
    Xing, Guozhong
    Yang, Lili
    Lang, Jihui
    Gao, Ming
    Yao, Bin
    Wu, Tom
    JOURNAL OF LUMINESCENCE, 2009, 129 (09) : 996 - 999
  • [34] Elastic Properties of Crystalline-Amorphous Core-Shell Silicon Nanowires
    Khachadorian, Sevak
    Papagelis, Konstantinos
    Ogata, Ken
    Hofmann, Stephan
    Phillips, Matthew R.
    Thomsen, Christian
    JOURNAL OF PHYSICAL CHEMISTRY C, 2013, 117 (08): : 4219 - 4226
  • [35] Optical Properties of Crystalline-Amorphous Core-Shell Silicon Nanowires
    Adachi, M. M.
    Anantram, M. P.
    Karim, K. S.
    NANO LETTERS, 2010, 10 (10) : 4093 - 4098
  • [36] Structural and optical properties of individual GaP/ZnO core-shell nanowires
    Novak, J.
    Krizanova, Z.
    Vavra, I.
    Elias, P.
    Hasenoehrl, S.
    Laurencikova, A.
    Novotny, I.
    Kovac, J.
    Sutta, P.
    Mikulics, M.
    VACUUM, 2013, 98 : 106 - 110
  • [37] Strain relaxation by dislocation glide in ZnO/ZnMgO core-shell nanowires
    Perillat-Merceroz, G.
    Thierry, R.
    Jouneau, P. -H.
    Ferret, P.
    Feuillet, G.
    APPLIED PHYSICS LETTERS, 2012, 100 (17)
  • [38] Electronic structure and optical properties of ZnO/ZnS core-shell nanowires
    Xu, Zhimou
    Xue, Liangshuai
    Yu, Zhiqiang
    Qu, Xiaopeng
    Huazhong Keji Daxue Xuebao (Ziran Kexue Ban)/Journal of Huazhong University of Science and Technology (Natural Science Edition), 2016, 44 (07): : 100 - 104
  • [39] Synthesis of long ZnO/ZnS core-shell nanowires and their optical properties
    Cao, Guangxia
    Yang, Hanjia
    Hong, Kunquan
    Hu, Wenjia
    Xu, Mingxiang
    MATERIALS LETTERS, 2015, 161 : 278 - 281
  • [40] Synthesis and characterization of core-shell ZnO/ZnSe nanowires grown by MOCVD
    Amiri, Gaelle
    Souissi, Ahmed
    Haneche, Nadia
    Vilar, Christele
    Lusson, Alain
    Sallet, Vincent
    Galtier, Pierre
    PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS, 2013, 250 (10): : 2132 - 2136
12345