The core-level electronic structures of the exfoliated graphene sheets on a Au-coated SiOx substrate have been studied by synchrotron radiation photoelectron spectroscopy (SR-PES) on a micron-scale. The graphene was firstly demonstrated its visibility on the Au-coated SiOx substrate by micro-optical characterization, and then conducted into SR-PES study. Because of the elimination of charging effect, precise C 1s core-level characterization clearly 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 SiOx substrate can be treated as a simple but high-throughput platform for in situ studying graphene under further hybridization by PES.
@article{arxiv.1205.5117,
title = {Graphene on Au-coated SiOx substrate: Its core-level photoelectron micro-spectroscopy study},
author = {Jhih-Wei Chen and Chiang-Lun Wang and Hung Wei Shiu and Chi-Yuan Lin and Chen-Shiung Chang and Forest Shih-Sen Chien and Chia-Hao Chen and Yi-Chun Chen and Chung-Lin Wu},
journal= {arXiv preprint arXiv:1205.5117},
year = {2015}
}