Effect of Pb-doping on the morphology, structural and optical properties of ZnO nanowires synthesized via modified thermal evaporation

被引：38

作者：

Ahmad, Mashkoor ^{[1
]}

Pan, Caofeng ^{[1
]}

Yan, Wang ^{[1
]}

Zhu, Jing ^{[1
]}

机构：

[1] Tsinghua Univ, Beijing Natl Ctr Electron Microscopy, Dept Mat Sci & Engn, State Key Lab New Ceram & Fine Proc, Beijing 100084, Peoples R China

来源：

MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS | 2010年 / 174卷 / 1-3期

关键词：

ZnO; Pb-doped; Crystalline; Photoluminescence; HYDROTHERMAL SYNTHESIS; NANORODS; TEMPERATURE; NANOBELTS; SURFACE; GROWTH; ARRAYS; OXIDES; LASER;

D O I：

10.1016/j.mseb.2010.03.039

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Pb-doped ZnO nanowires (NWs) have been synthesized by modified thermal evaporation method. Effect of Pb-doping on the morphology, structure, and optical properties of as deposited NWs have been investigated. The TEM images show that the doped NWs consist of cantilever-like with diameter in the range of 20-150 nm. It has been found that the doped NWs are single crystalline grown along [1 0 1] direction. The composition and valence state of Pb ions have been investigated through energy dispersive spectroscopy (EDS) and X-ray photospectroscopy (XPS), which demonstrate that the Pb ions are uniformly doped into each NW and are in +2 oxidation state. In addition, photoluminescence spectra exhibit an increased amount of defects with increasing Pb, which leads to a red shift in the UV region. Furthermore, the band gap tailoring in Pb-doped ZnO NWs makes their potential for optoelectronics devices. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：55 / 58

页数：4

共 28 条

[1] Bulk synthesis route of the oriented arrays of tip-shape ZnO nanowires and an investigation of their sensing capabilities [J].