Graphene-ZnO NWs hybrid film for large-area UV photodetector

Fengyuan Liu, Nivasan Yogeswaran, Carlos García Núñez, Duncan Gregory, Ravinder Dahiya

Research output: Contribution to conferencePosterpeer-review


One of the major barriers in the way of developing high-performance graphene-based photodetector is the low and wavelength-independent light absorption by graphene. In this regard, the schemes that adopt a heterogeneous integration of graphene and light sensitive materials are considered to hold the promise. However, to realize large-area heterogenous integration itself is not easy as some of the micro/nanofabrication steps are known to degrade the quality of graphene. This work demonstrates the successful integration of graphene-ZnO nanowires (NWs) over 4 cm2 with a facile and cost-effective method. The as-fabricated graphene-ZnO hybrid film can function as an ultraviolet (UV) photodetector (PD) with a high performance and good uniformity over large-area. The huge sensitivity of ZnO NWs to UV light, combined with the high carrier mobility of graphene, enable the UV PD with a photoresponse up to 2100 A/W, and fast response times down to millisecond.
Original languageEnglish
Number of pages4
Publication statusPublished - 27 Dec 2018
EventIEEE Sensors Conference 2018 - Pullman New Delhi Aerocity, New Delhi, India
Duration: 28 Oct 201831 Oct 2018


ConferenceIEEE Sensors Conference 2018
Abbreviated titleIEEE Sensors 2018
CityNew Delhi
Internet address


  • graphene
  • ZnO NW
  • photodetector
  • heterogeneous integration
  • large-area electronics


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