CdS/ZnO Core/Shell Nanowire-Built Films for Enhanced Photodetecting and Optoelectronic Gas-Sensing Applications | |
Yang, Zheng; Guo, Linjuan; Zu, Baiyi; Guo, Yanan; Xu, Tao; Dou, Xincun | |
刊名 | ADVANCED OPTICAL MATERIALS |
2014 | |
卷号 | 2期号:8页码:738-745 |
ISSN号 | 2195-1071 |
英文摘要 | Uniform CdS/ZnO core/shell nanowires are hydrothermally synthesized using a two-step process and assembled into a photodetector and a NO2 optoelectronic sensor for the first time. The corresponding photodetector exhibits a fast, reversible, and stable optoelectronic response with a rise time of similar to 26 ms, a decay time of similar to 2.1 ms and a stability of over 5 months. The remarkable photosensitivity and fast photoresponse are attributed to the formation of a heterojunction structure between CdS and ZnO, which greatly inhibits the recombination of photoinduced electrons and holes. The CdS/ZnO core/shell nanowires also show an excellent visible-light-activated gas sensing performance towards ppb-level NO2 at room temperature. The responses range from 6.7% to 337% toward NO2 concentrations of 5 to 1000 ppb. It is found that the sensitivity of the NO2 sensor is dependent on the illuminated light intensity with a maximum value at 0.68 mW/cm(2). The sensing mechanisms of the CdS/ZnO nanowires under visible-light irradiation and the influence of light intensity are also discussed. The present CdS/ZnO core/shell nanowire not only benefits the fabrication of efficient photo-detectors, but also makes the instant, optically controlled sensing of ppb-level NO2 gas possible. |
收录类别 | SCI |
WOS记录号 | WOS:000341180400006 |
公开日期 | 2014-11-11 |
内容类型 | 期刊论文 |
源URL | [http://ir.xjipc.cas.cn/handle/365002/3752] |
专题 | 新疆理化技术研究所_环境科学与技术研究室 |
作者单位 | Chinese Acad Sci, Lab Environm Sci & Technol, Xinjiang Tech Inst Phys & Chem, Key Lab Funct Mat & Devices Special Environm, Urumqi 830011, Peoples R China;Univ Chinese Acad Sci, Beijing 100049, Peoples R China;No Illinois Univ, Dept Chem & Biochem, De Kalb, IL 60115 USA |
推荐引用方式 GB/T 7714 | Yang, Zheng,Guo, Linjuan,Zu, Baiyi,et al. CdS/ZnO Core/Shell Nanowire-Built Films for Enhanced Photodetecting and Optoelectronic Gas-Sensing Applications[J]. ADVANCED OPTICAL MATERIALS,2014,2(8):738-745. |
APA | Yang, Zheng,Guo, Linjuan,Zu, Baiyi,Guo, Yanan,Xu, Tao,&Dou, Xincun.(2014).CdS/ZnO Core/Shell Nanowire-Built Films for Enhanced Photodetecting and Optoelectronic Gas-Sensing Applications.ADVANCED OPTICAL MATERIALS,2(8),738-745. |
MLA | Yang, Zheng,et al."CdS/ZnO Core/Shell Nanowire-Built Films for Enhanced Photodetecting and Optoelectronic Gas-Sensing Applications".ADVANCED OPTICAL MATERIALS 2.8(2014):738-745. |
个性服务 |
查看访问统计 |
相关权益政策 |
暂无数据 |
收藏/分享 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论