Synthesis and Growth Mechanism: A Novel Fishing Rod-Shaped GaN Nanorods
ZHANG Shi-Ying1,2, XIU Xiang-Qian1**, HUA Xue-Mei1, XIE Zi-Li1, LIU Bin1, CHEN Peng1, HAN Ping1, LU Hai1, ZHANG Rong1, ZHENG You-Dou1
1Key Laboratory of Advanced Photonic and Electronic Materials, School of Electronic Science and Engineering, Nanjing University, Nanjing 210093 2College of Optoelectronics Engineering, Zaozhuang University, Zaozhuang 277160
Abstract：A novel fishing rod-shaped GaN nanorod is successfully fabricated through a new method by using the two-step growth technology. This growth method is applicable to continuous synthesis and is able to produce a large number of single-crystalline GaN nanorods with a relatively high purity and at a low cost. X-ray diffraction, scanning electron microscopy and high-resolution transmission electron microscopy are used to characterize the as-synthesized nanorods. The results show that most of the nanorods consist of a main rod and a top curved thread. It is single-crystal GaN with hexagonal wurtzite structure. The representative photoluminescence spectrum at room temperature exhibits a strong UV light emission band centered at 370.8 nm. Furthermore, a possible two-stage growth mechanism of the fishing rod-shaped GaN nanorod is also briefly discussed.
2014, Vol. 31 
