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Nanowire Ultraviolet Photodetectors and Optical Switches

Advanced Materials · 2002 · Vol. 14(2) · pp. 158–160

Hannes Kind(Lawrence Berkeley National Laboratory)Yan Han(Lawrence Berkeley National Laboratory)Benjamin Messer(Lawrence Berkeley National Laboratory)Matt Law(Lawrence Berkeley National Laboratory)Pinyi Yang✉

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Abstract

Highly sensitive nanowire switches have been created using ZnO nanowires. The light- induced conductivity increase, which is extremely sensitive to ultraviolet light, allows the reversibly switching of the nanowires between the “OFF” and “ON” states by an optical gating phenomenon analogous to the commonly used electrical gating. The Figure shows a field-emission SEM image of a 60 nm ZnO nanowire bridging four Au electrodes.

Nanowire Synthesis and Applications ZnO doping and properties GaN-based semiconductor devices and materialsNanowireMaterials scienceUltravioletGatingPhotodetectorOptoelectronicsBridging (networking)Ultraviolet lightElectrodeOptical switch

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