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  • 文献标题:   Transition of gas sensing behavior in non-reduced graphene oxides with thermal annealing
  • 文献类型:   Article
  • 作　　者:   PARK H, AHN H, CHUNG Y, CHO SB, YOON YS, KIM DJ
  • 作者关键词:   nonreduced graphene oxide, reduced graphene oxide, gas sensing behavior, structure change, thermal reduction
  • 出版物名称:   MATERIALS LETTERS
  • ISSN:   0167-577X EI 1873-4979
  • 通讯作者地址:   Auburn Univ
  • 被引频次:   13
  • DOI:   10.1016/j.matlet.2014.07.184
  • 出版年:   2014

▎ 摘　　要

Graphene oxide (GO) films were deposited via spin coating on SiO2/Si wafers patterned with interdigitated Pt electrodes. Gas sensing behaviors of GO films and their heat treated films at 200 degrees C in argon atmosphere were characterized. Apparently, non-reduced graphene oxide exhibits n-type and reduced graphene oxide films show p-type behavior on ethanol gas. The change of oxygen functional groups and bond structure are suggested to explain the transition. The combinatorial use of GO and reduced GO (r-GO) in a gas sensor array will provide practical solutions to measure various gases with high selectivity and sensitivity. (C) 2014 Elsevier B.V. All rights reserved.