AVS 64th International Symposium & Exhibition
    2D Materials Focus Topic Wednesday Sessions
       Session 2D-WeA

Paper 2D-WeA10
Enabling Atmospheric Pressure Photoelectron Imaging and Spectroscopy using Graphene

Wednesday, November 1, 2017, 5:20 pm, Room 15

Session: Properties and Characterization of 2D Materials
Presenter: Ivan Vlassiuok, Oak Ridge National Laboratory
Authors: H.X. Guo, National Institute of Standards and Technology
E. Strelcov, NIST Center for Nanoscale Science and Technology / University of Maryland
A. Yulaev, University of Maryland
I. Vlassiuok, Oak Ridge National Laboratory
A. Kolmakov, NIST Center for Nanoscale Science and Technology
Correspondent: Click to Email
We report on recent progress in ambient pressure XPS (APXPS) spectroscopy and electron microscopy of liquid and gaseous samples enabled by electron transparent and molecular impermeable graphene membranes. Single and bilayer graphene membranes are sufficiently transparent to few hundred eV photoelectrons generated by synchrotron or laboratory x-ray sources what makes this experimental platform to be an inexpensive alternative to current differentially pumped APXPS systems. We demonstrate the capabilities of this approach on model liquids and electrochemical cells using a wide array of spectroscopy (AES, XPS, NEXAFS) and imaging (SEM, PEEM) techniques. We also discuss the limitations of this approach and lines of its future development