Effects of alkali on the morphologies and photoluminescence properties of ZnO nanostructures

被引：18

作者：

Hu, Q. R. ^{[1
]}

Wang, S. L. ^{[1
]}

Tang, W. H. ^{[1
]}

机构：

[1] Zhejiang Sci Tech Univ, Ctr Optoelect Mat & Devices, Dept Phys, Hangzhou 310018, Zhejiang, Peoples R China

来源：

MATERIALS LETTERS | 2010年 / 64卷 / 16期

基金：

中国国家自然科学基金;

关键词：

Nanomaterials; Semiconductors; Luminescence; NANOWIRE ARRAYS; NANORODS;

D O I：

10.1016/j.matlet.2010.05.030

中图分类号：

T [工业技术];

学科分类号：

120111 [工业工程];

摘要：

ZnO nanostructures were fabricated in the ethanol solution of different alkali by a surfactant-free solvothermal method. ZnO nanoparticles, nanowires and nanorods were obtained depending on the experimental conditions. The corresponding growth mechanism follows a typical self-assembly growth process. The effects of various alkalis on the structures and morphologies of ZnO nanostructures were investigated. Moreover, the photoluminescence (PL) properties of the ZnO nanostructures were studied and exhibited some new features. It is found that the surface defects should be responsible for the green emission observed in the as-prepared ZnO nanostructures. The higher the specific surface area of ZnO nanostructures, the stronger the green emission and the weaker the ultraviolet (UV) emission are. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：1822 / 1824

页数：3

共 18 条

[1]

Electronic Transport in Superlattice-Structured ZnO Nanohelix [J].

Gao, Pu-Xian ;

Ding, Yong ;

Wang, Zhong Lin .

NANO LETTERS, 2009, 9 (01) :137-143

[2]

Rotor-like ZnO by epitaxial growth under hydrothermal conditions [J].

Gao, XP ;

Zheng, ZF ;

Zhu, HY ;

Pan, GL ;

Bao, JL ;

Wu, F ;

Song, DY .

CHEMICAL COMMUNICATIONS, 2004, (12) :1428-1429

[3]

Nanostructured organic-inorganic photodiodes with high rectification ratio [J].

Karan, Santanu ;

Mallik, Biswanath .

NANOTECHNOLOGY, 2008, 19 (49)

[4]

Hierarchical ZnO nanostructures [J].

Lao, JY ;

Wen, JG ;

Ren, ZF .

NANO LETTERS, 2002, 2 (11) :1287-1291

[5]

Facile synthesis of well-aligned ZnO nanowire arrays and their photoluminescence properties [J].

Li, P. G. ;

Wang, X. ;

Tang, W. H. .

JOURNAL OF ALLOYS AND COMPOUNDS, 2009, 476 (1-2) :744-748

[6]

Ordered semiconductor ZnO nanowire arrays and their photoluminescence properties [J].

Li, Y ;

Meng, GW ;

Zhang, LD ;

Phillipp, F .

APPLIED PHYSICS LETTERS, 2000, 76 (15) :2011-2013

[7]

Synthesis of ZnO Nanowires and Their Applications as an Ultraviolet Photodetector [J].

Lin, Chih-Cheng ;

Lin, Wang-Hua ;

Li, Yuan-Yao .

JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY, 2009, 9 (05) :2813-2819

[8]

Carbon-decorated ZnO nanowire array: A novel platform for direct electrochemistry of enzymes and biosensing applications [J].

Liu, Jinping ;

Guo, Chunxian ;

Li, Chang Ming ;

Li, Yuanyuan ;

Chi, Qingbo ;

Huang, Xintang ;

Liao, Lei ;

Yu, Ting .

ELECTROCHEMISTRY COMMUNICATIONS, 2009, 11 (01) :202-205

[9]

Pacholski C, 2002, ANGEW CHEM INT EDIT, V41, P1188, DOI 10.1002/1521-3773(20020402)41:7<1188::AID-ANIE1188>3.0.CO

[10]

2-5

← 1 2 →