Cu‐Doped ZnO Nanowires for Efficient and Multispectral Photodetection Applications

Abstract

Cu-doped ZnO nanowires exhibiting high sensitivity to both UV and visible light are prepared by a vapor–liquid–solid method. The nanowires are highly resistive in the dark but exhibit several orders of magnitude enhancement in photoconductivity under UV and white-light irradiation because of an avalanche-type photocarrier multiplication effect, paving the way for their use in nanoscale photodetection applications.