|About this Abstract
||Materials Science & Technology 2012
||Controlled Synthesis, Processing, and Applications of Structural and Functional Nanomaterials
||Floating Growth of Aligned ZnO Nanowire Arrays on Graphene in Solution for High-Performance Ultraviolet Detectors Applications
||Judy Wu, Jianwei Liu, Rongtao Lu, Guowei Xu
|On-Site Speaker (Planned)
The zero bandgap of graphene limits its application for optoelectronics and considerable efforts have been made recently in fabrication of hybrid structures. ZnO/graphene nanohybrid is of particular interest because of its superior wavelength selectivity and charge mobility, both are critical high-performance ultraviolet detectors. In this work, we report a new seedless floating growth method for aligned ZnO nanowires on CVD-graphene. On the obtained ZnO/graphene nanohybrids, UV detectors were assembled using graphene as anode. The high sensitivity of 1.62 A/W-volt and fast response time ~300 ms obtained represent a significant improvement over ZnO/graphene UV detectors obtained using other growth methods. The floating growth may be applied to many other semiconductor/graphene nanohybirds and has an advantage of low growth temperatures below 100 °C, which is particular appealing for cost-efficient production of semiconductor nanohybrids in large scale on flexible substrates of polymers and plastics for applications of photovoltaics, photodetector and photocatalyst.