Graphene on Au-coated SiO x substrate: Its core-level photoelectron microspectroscopy study

Jhih Wei Chen, Chiang Lun Wang, Hung Wei Shiu, Chi Yuan Lin, Chen Shiung Chang, Forest Shih Sen Chien, Chia Hao Chen, Yi Chun Chen, Chung Lin Wu

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5 Citations (Scopus)

Abstract

The core-level electronic structures of exfoliated graphene sheets on a Au-coated SiO x substrate have been studied using synchrotron radiation photoelectron spectroscopy (SR-PES) on a micron scale. The graphene's visibility on the Au-coated SiO x substrate was first demonstrated by micro optical characterization, and then an SR-PES study was conducted. Because of the elimination of charging effect, a precise C 1s core-level characterization shows graphitic and contaminated carbon states of graphene. Different levels of Au-coating-induced p-type doping on single- and double-layer graphene sheets were also examined in the C 1s core-level shift. The Au-coated SiO x substrate can be treated as a simple but highthroughput platform for in situ studying graphene under further hybridization by PES.

Original languageEnglish
Article number085101
JournalApplied Physics Express
Volume5
Issue number8
DOIs
Publication statusPublished - 2012 Aug 1

All Science Journal Classification (ASJC) codes

  • Engineering(all)
  • Physics and Astronomy(all)

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