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

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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.

Original languageEnglish (US)
Title of host publication2011 11th IEEE International Conference on Nanotechnology, NANO 2011
Pages1124-1127
Number of pages4
DOIs
StatePublished - 2011
Event2011 11th IEEE International Conference on Nanotechnology, NANO 2011 - Portland, OR, United States
Duration: Aug 15 2011Aug 19 2011

Publication series

NameProceedings of the IEEE Conference on Nanotechnology
ISSN (Print)1944-9399
ISSN (Electronic)1944-9380

Other

Other2011 11th IEEE International Conference on Nanotechnology, NANO 2011
CountryUnited States
CityPortland, OR
Period8/15/118/19/11

Keywords

  • Graphene
  • infrared sensing
  • optical detection
  • photoelectric effect

ASJC Scopus subject areas

  • Bioengineering
  • Electrical and Electronic Engineering
  • Materials Chemistry
  • Condensed Matter Physics

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