Graphene/ZnO nanowire/graphene vertical structure based fast-response ultraviolet photodetector

Xue Wen Fu; Zhi Min Liao; Yang Bo Zhou; Han Chun Wu; Ya Qing Bie; Jun Xu; Da Peng Yu

doi:10.1063/1.4724208

Graphene/ZnO nanowire/graphene vertical structure based fast-response ultraviolet photodetector

Xue Wen Fu
, Zhi Min Liao^*
, Yang Bo Zhou
, Han Chun Wu
, Ya Qing Bie
, Jun Xu
, Da Peng Yu

^*Corresponding author for this work

Peking University
Trinity College Dublin

Research output: Contribution to journal › Article › peer-review

211 Citations (Scopus)

Abstract

We report the high performance vertical ultraviolet (UV) photodetectors based on single ZnO nanowire (NW) sandwiched between two graphene sheets. The photocurrent on-off ratio, rising time, and recovery speed of our UV detectors are 8 × 10 ², 0.7 s, and 0.5 s, respectively, which are significantly improved compared to the conventional ZnO NWs photodetectors. The improved performance is attributed to the existence of Schottky barriers between ZnO NW and graphene electrodes. The graphene/ZnO NW/graphene vertical sandwiched structures may be promising candidates for integrated optoelectronic sensor devices.

Original language	English
Article number	223114
Journal	Applied Physics Letters
Volume	100
Issue number	22
DOIs	https://doi.org/10.1063/1.4724208
Publication status	Published - 28 May 2012
Externally published	Yes

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title = "Graphene/ZnO nanowire/graphene vertical structure based fast-response ultraviolet photodetector",

abstract = "We report the high performance vertical ultraviolet (UV) photodetectors based on single ZnO nanowire (NW) sandwiched between two graphene sheets. The photocurrent on-off ratio, rising time, and recovery speed of our UV detectors are 8 × 10 2, 0.7 s, and 0.5 s, respectively, which are significantly improved compared to the conventional ZnO NWs photodetectors. The improved performance is attributed to the existence of Schottky barriers between ZnO NW and graphene electrodes. The graphene/ZnO NW/graphene vertical sandwiched structures may be promising candidates for integrated optoelectronic sensor devices.",

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AU - Fu, Xue Wen

AU - Liao, Zhi Min

AU - Zhou, Yang Bo

AU - Wu, Han Chun

AU - Bie, Ya Qing

AU - Xu, Jun

AU - Yu, Da Peng

PY - 2012/5/28

Y1 - 2012/5/28

N2 - We report the high performance vertical ultraviolet (UV) photodetectors based on single ZnO nanowire (NW) sandwiched between two graphene sheets. The photocurrent on-off ratio, rising time, and recovery speed of our UV detectors are 8 × 10 2, 0.7 s, and 0.5 s, respectively, which are significantly improved compared to the conventional ZnO NWs photodetectors. The improved performance is attributed to the existence of Schottky barriers between ZnO NW and graphene electrodes. The graphene/ZnO NW/graphene vertical sandwiched structures may be promising candidates for integrated optoelectronic sensor devices.

AB - We report the high performance vertical ultraviolet (UV) photodetectors based on single ZnO nanowire (NW) sandwiched between two graphene sheets. The photocurrent on-off ratio, rising time, and recovery speed of our UV detectors are 8 × 10 2, 0.7 s, and 0.5 s, respectively, which are significantly improved compared to the conventional ZnO NWs photodetectors. The improved performance is attributed to the existence of Schottky barriers between ZnO NW and graphene electrodes. The graphene/ZnO NW/graphene vertical sandwiched structures may be promising candidates for integrated optoelectronic sensor devices.

UR - https://www.scopus.com/pages/publications/84862118406

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JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 22

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ER -

Graphene/ZnO nanowire/graphene vertical structure based fast-response ultraviolet photodetector

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