title: High-Sensitive Ultraviolet Photodetectors Based on ZnO Nanorods/CdS Heterostructures.
abstract: The ultraviolet (UV) photodetectors with ZnO nanorods (NRs)/CdS thin film heterostructures on glass substrates have been fabricated and characterized. It can be seen that the UV photoresponsivity of such a device became higher as the ZnO NR length was increased in the investigation. With an incident wavelength of 350 nm and 5 V applied bias, the responsivity of photodetectors based on ZnO NR/CdS heterostructures with the ZnO NR length at 500, 350, and 200 nm and traditional CdS film were at 12.86, 3.83, 0.91, and 0.75 A/W, respectively. The measurement results of the fabricated photodetectors based on ZnO nanorods (NRs)/CdS heterostructures have shown a significant high sensitivity in the range of UV light, which can be useful for the application of UV detection.
authors.affiliation: Fujian University of Technology, Fuzhou, People's Republic of China.
authors.forename: Kin-Tak
authors.initials: KT
authors.lastname: Lam
authors.affiliation: National Nano Device Laboratories, National Applied Research Laboratories, Tainan, 701, Taiwan. yujenhsiao.tw@gmail.com.
authors.forename: Yu-Jen
authors.initials: YJ
authors.lastname: Hsiao
authors.affiliation: Institute of Electro-Optical and Materials Science, National Formosa University, Yunlin, 632, Taiwan. lwji@seed.net.tw.
authors.forename: Liang-Wen
authors.initials: LW
authors.lastname: Ji
authors.affiliation: Department of Mechanical Engineering, National Kaohsiung University of Applied Sciences, Kaohsiung, 807, Taiwan.
authors.forename: Te-Hua
authors.initials: TH
authors.lastname: Fang
authors.affiliation: Institute of Electro-Optical and Materials Science, National Formosa University, Yunlin, 632, Taiwan.
authors.forename: Kai-Hua
authors.initials: KH
authors.lastname: Hsiao
authors.affiliation: Department of Mechanical Engineering and Automation Engineering, Kao Yuan University, Kaohsiung, 821, Taiwan.
authors.forename: Tung-Te
authors.initials: TT
authors.lastname: Chu
keywords: CdS film; Photodetectors; ZnO nanorods