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: Contribution to journalArticlepeer-review

    254 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 - 2011 Jan 1

    ASJC Scopus subject areas

    • Materials Science(all)

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