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Gas adsorption dynamics in graphene by laser THz emission spectroscopy

  • F. Bagsican
  • , A. Winchester
  • , S. Ghosh
  • , X. Zhang
  • , L. Ma
  • , M. Wang
  • , I. Kawayama
  • , H. Murakami
  • , S. Talapatra
  • , R. Vajtai
  • , P. Ajayan
  • , J. Kono
  • , M. Tonouchi

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

Abstract

Graphene and other 2D materials are attractive for nanomaterial-based devices. However, their properties are highly susceptible to adsorbed gas species on the surface, which makes it important to study gas adsorption dynamics in these materials. Here we applied laser THz emission spectroscopy (LTES) to study O2 adsorption dynamics in graphene deposited on SI-InP. THz emission from SI-InP dramatically changes upon O2 adsorption because O2 adsorbates induce local electric dipoles and modify the SI-InP surface depletion layer [1].

Original languageEnglish
Title of host publicationJSAP-OSA Joint Symposia, JSAP 2015
PublisherOptica Publishing Group (formerly OSA)
ISBN (Electronic)9784863485419
ISBN (Print)9784863485419
StatePublished - 2015
Externally publishedYes
EventJSAP-OSA Joint Symposia 2015 - Nagoya, Japan
Duration: Sep 13 2015 → Sep 16 2015

Publication series

NameOptics InfoBase Conference Papers
VolumePart F132-JSAP 2015
ISSN (Electronic)2162-2701

Conference

ConferenceJSAP-OSA Joint Symposia 2015
Country/TerritoryJapan
CityNagoya
Period09/13/15 → 09/16/15

Funding

JSPS/MEXT, Air Force Office of Scientific Research (grant number FA9550-14-1-0268 and FA2386-15-1-0004), This work is partially funded by Grant-in-Aid for Scientific Research (No. 25630149 and No. 26107524), JSPS/MEXT, Air Force Office of Scientific Research (grant number FA9550-14-1-0268 and FA2386-15-1-0004), and Program for Promoting International Joint Research, Osaka University.

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