Au Nanoparticles-Decorated Ultraviolet Photodetector on Transparent Mica Substrate

Hydrothermally processed ZnO nanorods decorated by Au nanoparticles have been demonstrated to exhibit extraordinary optoelectronic properties. With the introduction of Au nanoparticles modification, the ultraviolet responsivity has been greatly enhanced by approximately 200 times, up to 1244 A/W, compared with that of pristine ZnO. This work will be promising for designing high responsivity ZnO photodetector.