Synthesis, Microstructure, and Cathodoluminescence of 0001 -Oriented GaN Nanorods Grown on Conductive Graphite Substrate

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	Synthesis, Microstructure, and Cathodoluminescence of 0001 -Oriented GaN Nanorods Grown on Conductive Graphite Substrate
	F. Yuan; B. D. Liu; Z. E. Wang; B. Yang; Y. Yin; B. Dierre; T. Sekiguchi; G. F. Zhang; X. Jiang
	2013
发表期刊	Acs Applied Materials & Interfaces
ISSN	1944-8244
卷号	5 期号:22 页码:12066-12072
摘要	One-dimensional GaN nanorods with corrugated morphology have been synthesized on graphite substrate without the assistance of any metal catalyst through a feasible thermal evaporation process. The morphologies and microstructures of GaN nanorods were characterized by X-ray powder diffraction (XRD), scanning electron microscopy (SEM) and high-resolution transmission electron microscopy (HRTEM). The results from HRTEM analysis indicate that the GaN nanorods are well-crystallized and exhibit a preferential orientation along the [0001] direction with Ga3+-terminated (<10(1)over bar1> and N3--terminated (10 (11) over bar) as side facets, finally leading to the corrugated morphology surface. The stabilization of the electrostatic surface energy of [10 (1) over bar1) polar surface in a wurtzite-type hexagonal structure plays a key role in the formation of GaN nanorods with corrugated morphology. Room-temperature cathodolurninescence (CL) measurements show a near-band-edge emission (NBE) in the ultraviolet range and a broad deep level emission (DLE) in the visible range. The crystallography and the optical emissions of GaN nanorods are discussed.
部门归属	[yuan, fang ; wang, zaien ; zhang, guifeng] dalian univ technol, sch mat sci & engn, dalian 116024, peoples r china. [yuan, fang ; liu, baodan ; yang, bing ; jiang, xin] chinese acad sci, imr, shenyang natl lab mat sci, shenyang 110016, peoples r china. [yin, yao ; dierre, benjamin ; sekiguchi, takashi] natl inst mat sci, world premier int wpi ctr mat nanoarchitecton man, tsukuba, ibaraki 3050044, japan. ; liu, bd (reprint author), chinese acad sci, imr, shenyang natl lab mat sci, 72 wenhua rd, shenyang 110016, peoples r china. ; baodanliu@imr.ac.cn ; xjiang@imr.ac.cn
关键词	Gan Nanorods Graphite Crystallography Cathodoluminescence Vapor-phase Epitaxy Nanowire Arrays Piezoelectric Nanogenerators Yellow Luminescence Zinc-oxide Photoluminescence Nanostructures Deposition Mechanism Graphene
URL	查看原文
语种	英语
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/72423
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	F. Yuan,B. D. Liu,Z. E. Wang,et al. Synthesis, Microstructure, and Cathodoluminescence of 0001 -Oriented GaN Nanorods Grown on Conductive Graphite Substrate[J]. Acs Applied Materials & Interfaces,2013,5(22):12066-12072.
APA	F. Yuan.,B. D. Liu.,Z. E. Wang.,B. Yang.,Y. Yin.,...&X. Jiang.(2013).Synthesis, Microstructure, and Cathodoluminescence of 0001 -Oriented GaN Nanorods Grown on Conductive Graphite Substrate.Acs Applied Materials & Interfaces,5(22),12066-12072.
MLA	F. Yuan,et al."Synthesis, Microstructure, and Cathodoluminescence of 0001 -Oriented GaN Nanorods Grown on Conductive Graphite Substrate".Acs Applied Materials & Interfaces 5.22(2013):12066-12072.