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Author:

Liu, Qi (Liu, Qi.) | Deng, Jun (Deng, Jun.) | Xu, Chen (Xu, Chen.) (Scholars:徐晨) | Xie, Yiyang (Xie, Yiyang.) | Dong, Yibo (Dong, Yibo.) | Pan, Guanzhong (Pan, Guanzhong.) | Sun, Jie (Sun, Jie.)

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Scopus SCIE

Abstract:

Graphene photodetectors grown by chemical vapor deposition are fabricated for unfocused laser and white light sensing. The unfocused light enlarges the illuminated graphene area and mimics the real-life sensing conditions, yielding a responsivity of 104 mA/W at room temperature without enhancing absorbance by waveguide and plasmonics. The devices are based on positive photoconductivity from the electron-hole photocarrier pairs and the bolometric-effect-induced negative photoconductivity. The buried off-center local gate induces a net internal potential in the graphene. The relative strength of the two photoconductivities depends on the gate voltage. The technology is scalable, which is a step ahead toward real applications. (C) 2016 Optical Society of America

Keyword:

Author Community:

  • [ 1 ] [Liu, Qi]Beijing Univ Technol, Sch Elect Informat & Control Engn, Key Lab Optoelect Technol, Beijing 100124, Peoples R China
  • [ 2 ] [Deng, Jun]Beijing Univ Technol, Sch Elect Informat & Control Engn, Key Lab Optoelect Technol, Beijing 100124, Peoples R China
  • [ 3 ] [Xu, Chen]Beijing Univ Technol, Sch Elect Informat & Control Engn, Key Lab Optoelect Technol, Beijing 100124, Peoples R China
  • [ 4 ] [Xie, Yiyang]Beijing Univ Technol, Sch Elect Informat & Control Engn, Key Lab Optoelect Technol, Beijing 100124, Peoples R China
  • [ 5 ] [Dong, Yibo]Beijing Univ Technol, Sch Elect Informat & Control Engn, Key Lab Optoelect Technol, Beijing 100124, Peoples R China
  • [ 6 ] [Pan, Guanzhong]Beijing Univ Technol, Sch Elect Informat & Control Engn, Key Lab Optoelect Technol, Beijing 100124, Peoples R China
  • [ 7 ] [Sun, Jie]Beijing Univ Technol, Sch Elect Informat & Control Engn, Key Lab Optoelect Technol, Beijing 100124, Peoples R China
  • [ 8 ] [Sun, Jie]Chalmers Univ Technol, Dept Microtechnol & Nanosci, S-41296 Gothenburg, Sweden

Reprint Author's Address:

  • 徐晨

    [Xu, Chen]Beijing Univ Technol, Sch Elect Informat & Control Engn, Key Lab Optoelect Technol, Beijing 100124, Peoples R China

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Source :

OPTICAL MATERIALS EXPRESS

ISSN: 2159-3930

Year: 2016

Issue: 7

Volume: 6

Page: 2158-2164

2 . 8 0 0

JCR@2022

ESI Discipline: MATERIALS SCIENCE;

ESI HC Threshold:305

CAS Journal Grade:2

Cited Count:

WoS CC Cited Count: 3

SCOPUS Cited Count: 3

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 0

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