1 research outputs found
Performance Enhancement of ZnO UV Photodetectors by Surface Plasmons
Surface
plasmons, a unique property of metal nanoparticles, have
been widely applied to enhance the performance of optical and electrical
devices. In this study, a high quality zinc oxide (ZnO) thin film
was grown on a quartz substrate by a radio frequency magnetron sputtering
technique, and a metal–semiconductor–metal structured
ultraviolet detector was prepared on the ZnO film. The responsivity
of the photodetector was enhanced from 0.836 to 1.306 A/W by sputtering
metal (Pt) nanoparticles on the surface of the device. In addition,
the absorption of the ZnO thin film was enhanced partly in the ultraviolet
band. It is revealed that Pt nanoparticles play a key role in enhancing
the performance of the photodetectors, where surface plasma resonance
occurs