Self-powered, ultrafast, visible-blind UV detection and optical logical operation based on ZnO/GaN nanoscale p-n
Ya-Qing Bie1, Zhi-Min Liao, Hong-Zhou Zhang
1State Key Laboratory for Mesoscopic Physics, Department of Physics, Peking University, Beijing, PR China.
Advanced Materials (Deerfield Beach, Fla.)
|January 29, 2011
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.
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