Crystal Orientation Controlled Photovoltaic Properties of Multilayer GaAs Nanowire Arrays

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	Crystal Orientation Controlled Photovoltaic Properties of Multilayer GaAs Nanowire Arrays
	Han, Ning 1,2; Yang, Zai-xing 3,4,5; Wang, Fengyun 6; Yip, SenPo 3,4,5; Li, Dapan 3,5; Hung, Tak Fu 3; Chen, Yunfa1,2 ; Ho, Johnny C.3,4,5
刊名	ACS NANO
	2016-06-01
卷号	10 期号:6 页码:6283-6290
关键词	GaAs nanowire orientation contact printing X-ray diffraction photovoltaic Schottky contact
ISSN号	1936-0851
英文摘要	In recent years, despite significant progress in the synthesis, characterization, and integration of various nanowire (NW) material systems, crystal orientation controlled NW growth as well as real-time assessment of their growth-structure-property relationships still presents one of the major challenges in deploying NWs for practical large-scale applications. In this study, we propose, design, and develop a multilayer NW printing scheme for the determination of crystal orientation controlled photovoltaic properties of parallel GaAs NW arrays. By tuning the catalyst thickness and nucleation and growth temperatures in the two-step chemical vapor deposition, crystalline GaAs NWs with uniform, pure (110) and (111) orientations and other mixture ratios can be successfully prepared. Employing lift-off resists, three-layer NW parallel arrays can be easily attained for X-ray diffraction in order to evaluate their growth orientation along with the fabrication of NW parallel array based Schottky photovoltaic devices for the subsequent performance assessment. Notably, the open-circuit voltage of purely (111)-oriented NW arrayed cells is far higher than that of (110)-oriented NW arrayed counterparts, which can be interpreted by the different surface Fermi level pinning that exists on various NW crystal surface planes due to the different As dangling bond densities. All this indicates the profound effect of NW crystal orientation on physical and chemical properties of GaAs NWs, suggesting the careful NW design considerations for achieving optimal photovoltaic performances. The approach presented here could also serve as a versatile and powerful platform for in situ characterization of other NW materials.
WOS标题词	Science & Technology ; Physical Sciences ; Technology
类目[WOS]	Chemistry, Multidisciplinary ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary
研究领域[WOS]	Chemistry ; Science & Technology - Other Topics ; Materials Science
关键词[WOS]	EPITAXIAL SILICON NANOWIRES ; DEPENDENT GROWTH DIRECTION ; III-V NANOWIRES ; SI SOLAR-CELLS ; ELECTROCHEMICAL LITHIATION ; HIGH-EFFICIENCY ; TEMPERATURE ; PASSIVATION ; JUNCTIONS ; SHAPE
收录类别	SCI
语种	英语
WOS记录号	WOS:000378973700077
内容类型	期刊论文
源URL	[http://ir.ipe.ac.cn/handle/122111/21182]
专题	过程工程研究所_多相复杂系统国家重点实验室
作者单位	1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China 2.Chinese Acad Sci, Inst Urban Environm, Ctr Excellence Urban Atmospher Environm, Xiamen 361021, Peoples R China 3.City Univ Hong Kong, Dept Phys & Mat Sci, Kowloon, Hong Kong, Peoples R China 4.City Univ Hong Kong, State Key Lab Millimeter Waves, Kowloon, Hong Kong, Peoples R China 5.City Univ Hong Kong, Shenzhen Res Inst, Shenzhen 518057, Peoples R China 6.Qingdao Univ, Cultivat Base State Key Lab, Qingdao 266071, Peoples R China
推荐引用方式 GB/T 7714	Han, Ning,Yang, Zai-xing,Wang, Fengyun,et al. Crystal Orientation Controlled Photovoltaic Properties of Multilayer GaAs Nanowire Arrays[J]. ACS NANO,2016,10(6):6283-6290.
APA	Han, Ning.,Yang, Zai-xing.,Wang, Fengyun.,Yip, SenPo.,Li, Dapan.,...&Ho, Johnny C..(2016).Crystal Orientation Controlled Photovoltaic Properties of Multilayer GaAs Nanowire Arrays.ACS NANO,10(6),6283-6290.
MLA	Han, Ning,et al."Crystal Orientation Controlled Photovoltaic Properties of Multilayer GaAs Nanowire Arrays".ACS NANO 10.6(2016):6283-6290.