title: Self-powered, ultrafast, visible-blind UV detection and optical logical operation based on ZnO/GaN nanoscale p-n junctions.
abstract: Ultrafast-response (20 μs) UV detectors, which are visible-blind and self-powered, in devices where an n-type ZnO nanowire partially lies on a p-type GaN film, are demonstrated. Moreover, a CdSe-nanowire red-light detector powered by a nanoscale ZnO/GaN photovoltaic cell is also demonstrated, which extends the device function to a selective multiwavelength photodetector and shows the function of an optical logical AND gate.
authors.affiliation: State Key Laboratory for Mesoscopic Physics, Department of Physics, Peking University, Beijing, PR China.
authors.forename: Ya-Qing
authors.initials: YQ
authors.lastname: Bie
authors.forename: Zhi-Min
authors.initials: ZM
authors.lastname: Liao
authors.forename: Hong-Zhou
authors.initials: HZ
authors.lastname: Zhang
authors.forename: Guang-Ru
authors.initials: GR
authors.lastname: Li
authors.forename: Yu
authors.initials: Y
authors.lastname: Ye
authors.forename: Yang-Bo
authors.initials: YB
authors.lastname: Zhou
authors.forename: Jun
authors.initials: J
authors.lastname: Xu
authors.forename: Zhi-Xin
authors.initials: ZX
authors.lastname: Qin
authors.forename: Lun
authors.initials: L
authors.lastname: Dai
authors.forename: Da-Peng
authors.initials: DP
authors.lastname: Yu
mesh_terms: D004560:Electricity; D005708:Gallium / Q000737:chemistry*; D008128:Logic; D036103:Nanotechnology / Q000379:methods*; D053770:Nanowires / Q000737:chemistry*; D055620:Optical Phenomena; D013997:Time Factors; D014466:Ultraviolet Rays; D015034:Zinc Oxide / Q000737:chemistry*
chemical_list: C473348:gallium nitride; D005708:Gallium; D015034:Zinc Oxide