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Self‐Powered, Ultrafast, Visible‐Blind UV Detection and Optical Logical Operation based on ZnO/GaN Nanoscale p‐n Junctions
Author(s) -
Bie YaQing,
Liao ZhiMin,
Zhang HongZhou,
Li GuangRu,
Ye Yu,
Zhou YangBo,
Xu Jun,
Qin ZhiXin,
Dai Lun,
Yu DaPeng
Publication year - 2011
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201003156
Subject(s) - photodetector , materials science , nanoscopic scale , optoelectronics , ultrashort pulse , detector , nanowire , function (biology) , nanotechnology , optics , physics , laser , evolutionary biology , biology
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.