Chemistry and electronics of single layer MoS2 domains from photoelectron spectromicroscopy using laboratory excitation sources
نویسندگان
چکیده
In the recent context of emerging two-dimensional (2D) materials, a comprehensive set of spatially resolved photoelectron spectroscopic techniques providing information ranging from surface chemical states to electronic band structuremust be available at the practical level (i.e. from laboratory-based instrumentation) for a better understanding of their outstanding properties. We highlight recent capabilities of X-ray PhotoElectron EmissionMicroscopy (XPEEM) and reciprocal-space VUV-PEEM (kPEEM) for addressing this issue, with a report on microscopic analyses of chemical vapor deposited (CVD) molybdenum disulfide (MoS2) domains. These include band structure imaging with event-counting detection allowing to perform angle-resolved ultra-violet photoelectron spectroscopy (ARUPS) in a parallel way with energy resolution of 200meV and less, and k resolution of 0.05Å . Copyright © 2016 John Wiley & Sons, Ltd.
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