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 conferencePoster

Abstract

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
Publication statusAccepted/In press - 28 Oct 2018
EventIEEE Sensors Conference 2018 - Pullman New Delhi Aerocity, New Delhi, India
Duration: 28 Oct 201831 Oct 2018
http://ieee-sensors2018.org/

Conference

ConferenceIEEE Sensors Conference 2018
Abbreviated titleIEEE Sensors 2018
CountryIndia
CityNew Delhi
Period28/10/1831/10/18
Internet address

Fingerprint

Graphite
Photodetectors
Nanowires
Light sensitive materials
Carrier mobility
Nanotechnology
Light absorption
Wavelength
Costs

Keywords

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

Cite this

Liu, F., Yogeswaran, N., García Núñez, C., Gregory, D., & Dahiya, R. (Accepted/In press). Graphene-ZnO NWs hybrid film for large-area UV photodetector. Poster session presented at IEEE Sensors Conference 2018, New Delhi, India.
Liu, Fengyuan ; Yogeswaran, Nivasan ; García Núñez, Carlos ; Gregory, Duncan ; Dahiya, Ravinder. / Graphene-ZnO NWs hybrid film for large-area UV photodetector. Poster session presented at IEEE Sensors Conference 2018, New Delhi, India.
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Liu, F, Yogeswaran, N, García Núñez, C, Gregory, D & Dahiya, R 2018, 'Graphene-ZnO NWs hybrid film for large-area UV photodetector' IEEE Sensors Conference 2018, New Delhi, India, 28/10/18 - 31/10/18, .

Graphene-ZnO NWs hybrid film for large-area UV photodetector. / Liu, Fengyuan; Yogeswaran, Nivasan; García Núñez, Carlos; Gregory, Duncan; Dahiya, Ravinder.

2018. Poster session presented at IEEE Sensors Conference 2018, New Delhi, India.

Research output: Contribution to conferencePoster

TY - CONF

T1 - Graphene-ZnO NWs hybrid film for large-area UV photodetector

AU - Liu, Fengyuan

AU - Yogeswaran, Nivasan

AU - García Núñez, Carlos

AU - Gregory, Duncan

AU - Dahiya, Ravinder

PY - 2018/10/28

Y1 - 2018/10/28

N2 - 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.

AB - 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.

KW - graphene

KW - ZnO NW

KW - photodetector

KW - heterogeneous integration

KW - large-area electronics

M3 - Poster

ER -

Liu F, Yogeswaran N, García Núñez C, Gregory D, Dahiya R. Graphene-ZnO NWs hybrid film for large-area UV photodetector. 2018. Poster session presented at IEEE Sensors Conference 2018, New Delhi, India.