Raman spectroscopic and photoluminescence study of single-crystalline SnO2 nanowires

被引：168

作者：

Zhou, J. X.

Zhang, M. S. ^{[1
]}

Hong, J. M.

Yin, Z.

机构：

[1] Nanjing Univ, Natl Lab Solid State Microstruct, Nanjing 210093, Jiangsu, Peoples R China

[2] Nanjing Univ, Ctr Mat Anal, Nanjing 210093, Jiangsu, Peoples R China

来源：

SOLID STATE COMMUNICATIONS | 2006年 / 138卷 / 05期

基金：

中国国家自然科学基金;

关键词：

nanostructures; chemical synthesis; crystal structure and symmetry; inelastic light scattering;

D O I：

10.1016/j.ssc.2006.03.007

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Single-crystalline SnO2 nanowires with sizes of 4-14 nm in diameter and 100-500 nm in length were produced in a molten salt approach by using hydrothermal synthesized precursor. Structural characters of the nanowires were examined by X-ray diffraction and high-resolution electron transmission microscopy. Raman, photoluminescence and X-ray photoelectron spectra of the samples were examined under heat treatments. Three new Raman modes at 691, 514 and 358 cm(-1) were recorded and assigned. The former two are attributed to activation of original Raman-forbidden A(2u)LO mode and the third is attributed to defects in small-sized nanowires. A strong photoluminescence is observed at about 600 nm, the temperature effects is examined and the origin of the PL process is discussed via X-ray photoelectron spectra. (c) 2006 Elsevier Ltd. All rights reserved.

引用

页码：242 / 246

页数：5

共 31 条

[1] Structural characterization of nanocrystalline SnO2 by X-ray and Raman spectroscopy [J].