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Investigation and characterization of graphene for optical sensing

  • King Wai Chiu Lai*
  • , Ning Xi*
  • , Carmen Kar Man Fung
  • , Hongzhi Chen
  • , Liangliang Chen
  • , Ruiguo Yang
  • , Bo Song
  • *Corresponding author for this work

Research output: Chapters, Conference Papers, Creative and Literary WorksRGC 32 - Refereed conference paper (with host publication)peer-review

Abstract

We report a strong electron-photon interaction in exfoliated graphene observed at room temperature. Graphene has great potential to optoelectronic applications because of its excellent optical properties. Here, we demonstrate using the graphene-based structure for infrared detection under a zero-bias operation. When infrared light is projected to graphene, the graphene is capable to generate photocurrents. Besides, the electron-hole pairs generation of the graphene-based structure is independent of the direction of the polarized infrared source, and this makes graphene suitable for optical sensing. The device structure consists of graphene contacted with a pair of metal electrodes, which were fabricated using two nanomanipulation processes: dielectrophoresis and atomic force microscopic based nano assembly. © 2011 IEEE.
Original languageEnglish
Title of host publicationProceedings of the IEEE Conference on Nanotechnology
Pages1124-1127
DOIs
Publication statusPublished - 2011
Externally publishedYes
Event11th IEEE International Conference on Nanotechnology (NANO 2011) - Portland, United States
Duration: 15 Aug 201119 Aug 2011

Publication series

Name
ISSN (Print)1944-9399
ISSN (Electronic)1944-9380

Conference

Conference11th IEEE International Conference on Nanotechnology (NANO 2011)
PlaceUnited States
CityPortland
Period15/08/1119/08/11

Research Keywords

  • Graphene
  • infrared sensing
  • optical detection
  • photoelectric effect

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