GaN taper rods: Solid-phase synthesis, crystal defects, and optical properties

被引：11

作者：

Bao, Keyan ^{[1
]}

Liu, Shuzhen ^{[1
]}

Shi, Liang ^{[1
]}

Xiong, Shenglin ^{[1
]}

Li, Jun ^{[1
]}

Hu, Xiaobo ^{[1
]}

Cao, Jie ^{[1
]}

Qian, Yitai ^{[1
]}

机构：

[1] Univ Sci & Technol China, Dept Chem, Hefei Natl Lab Phys Sci Microscale, Hefei 230026, Anhui, Peoples R China

来源：

JOURNAL OF SOLID STATE CHEMISTRY | 2008年 / 181卷 / 07期

基金：

中国国家自然科学基金; 中国博士后科学基金;

关键词：

GaN; taper rods; precursor template; GaOOH; NaNH2;

D O I：

10.1016/j.jssc.2008.06.002

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Wurtzite GaN taper rods assembled from highly oriented nanoparticles were synthesized using NaNH2 and the as-synthesized GaOOH prismatic rods as reactants at 600 degrees C for 5 h. The lengths of the GaN taper rods are in the range of 4-6 mu m and the diameters are about 0.5-1.5 mu m. It was found that a slow heating rate (1 degrees C min(-1)) was beneficial to keeping the one-dimensional (ID) skeleton of GaN, otherwise only GaN nanoparticles were obtained with a quick heating rate (10 degrees C min(-1)). Selected area electron diffraction (SAED) patterns and high-resolution transmission electron microscopy (HRTEM) observations revealed that the GaN taper rods assembled from highly oriented nanoparticles and there were crystal defects in the GaN structure. The GaN taper rods displayed luminescence emission in the blue-violet region, which may be related to crystal defects. (C) 2008 Published by Elsevier Inc.

引用

页码：1634 / 1641

页数：8

共 48 条

[1] Triangular gallium nitride nanorods [J].