Optically Powered ZnO Nanowires with Symmetric and Asymmetric Contacts

doi:10.1166/jnn.2013.6078

CORC > 北京大学 > 信息科学技术学院

	Optically Powered ZnO Nanowires with Symmetric and Asymmetric Contacts
	Zhang, Lihuan ; Zhang, Xiaoxian ; Lai, Jialin ; Liu, Zhao ; Hou, Shimin ; Xie, Sishen ; Gao, Min
刊名	journal of nanoscience and nanotechnology
	2013
关键词	ZnO Nanowire Photovoltage Photocurrent Position Sensitivity Schottky Barrier SOLAR-CELLS PHOTODETECTORS LIMITS
DOI	10.1166/jnn.2013.6078
英文摘要	In this paper, we show large photovoltage and photocurrent obtained in individual ZnO nanowire devices with symmetrical and asymmetrical contacts. Ti/Au terminal electrodes were deposited for symmetrical contacts, while Ti/Au and Au electrodes were employed for asymmetrical contacts. Photovoltage and photocurrent measurements were carried out on individual ZnO nanowires devices without external bias. The symmetric nanowire devices exhibited similar to 3 mV photovoltage and similar to 10 nA photocurrent powered by UV laser illumination, while similar to 60 mV photovoltage and similar to 10 nA photocurrent were obtained for asymmetric contacts. Furthermore, the photovoltage were noticeably dependent on the local excitation position. Further calculation showed that the laser illumination reduced the Schottky barrier heights. The above results can be understood on the basis of illumination controlled Schottky barrier heights at nanowire-metal contacts and surface oxygen adsorption-desorption. We demonstrate that the simple two-terminal devices can be useful for self-powered and position sensitive photodetection, optically powered circuit, and nanowire based integrated nanophotonics.; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000318254500099&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; Chemistry, Multidisciplinary; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Physics, Applied; Physics, Condensed Matter; SCI(E); EI; PubMed; 3; ARTICLE; 2; 1203-1207; 13
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/291370]
专题	信息科学技术学院
推荐引用方式 GB/T 7714	Zhang, Lihuan,Zhang, Xiaoxian,Lai, Jialin,et al. Optically Powered ZnO Nanowires with Symmetric and Asymmetric Contacts[J]. journal of nanoscience and nanotechnology,2013.
APA	Zhang, Lihuan.,Zhang, Xiaoxian.,Lai, Jialin.,Liu, Zhao.,Hou, Shimin.,...&Gao, Min.(2013).Optically Powered ZnO Nanowires with Symmetric and Asymmetric Contacts.journal of nanoscience and nanotechnology.
MLA	Zhang, Lihuan,et al."Optically Powered ZnO Nanowires with Symmetric and Asymmetric Contacts".journal of nanoscience and nanotechnology (2013).