A highly sensitive ultraviolet sensor based on a facile in situ solution-grown ZnO nanorod/graphene heterostructure

Haixin Chang, Zhenhua Sun, Keith Yat Fung Ho, Xiaoming Tao, Feng Yan, Wai Ming Kwok, Zijian Zheng

Research output: Journal article publicationJournal articleAcademic researchpeer-review

243 Citations (Scopus)

Abstract

The weak photon absorption and fast carrier kinetics of graphene limit its application in photodetection. This limitation can be overcome by introducing photosensitive nanostructures to graphene. Herein we report the synthesis of a ZnO nanorod/graphene heterostructure by a facile in situ solution growth method. By combining the attributes of photosensitive ZnO nanorods and highly conductive graphene, we for the first time demonstrate a highly sensitive visible-blind ultraviolet (UV) sensor based on graphene related heterostructure. The photoresponsibility of the UV sensor can reach 22.7 A W-1, which is over 45,000 fold higher than that of single graphene sheet based photodetectors.
Original languageEnglish
Pages (from-to)258-264
Number of pages7
JournalNanoscale
Volume3
Issue number1
DOIs
Publication statusPublished - 1 Jan 2011

ASJC Scopus subject areas

  • Materials Science(all)

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