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Journal Article

Near ambient pressure photoelectron spectro-microscopy: from gas-solid interface to operando devices


Zeller,  Patrick
Elettra–Sincrotrone Trieste S.C.p.A. di interesse nazionale, SS 14-km 163.5, ;
Helmholtz-Zentrum Berlin für Materialien and Energie GmbH, BESSY II;
Inorganic Chemistry, Fritz Haber Institute, Max Planck Society;

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Amati, M., Gregoratti, L., Zeller, P., Greiner, M., Scardamaglia, M., Junker, B., et al. (2021). Near ambient pressure photoelectron spectro-microscopy: from gas-solid interface to operando devices. Journal of Physics D, 54(20): 204004. doi:10.1088/1361-6463/abe5e2.

Cite as: https://hdl.handle.net/21.11116/0000-0008-30D1-5
Near ambient pressure scanning photoelectron microscopy adds to the widely used photoemission spectroscopy and its chemically selective capability two key features: (1) the possibility to chemically analyse samples in a more realistic gas pressure condition and (2) the capability to investigate a system at the relevant spatial scale. To achieve these goals the approach developed at the ESCA Microscopy beamline at the Elettra Synchrotron facility combines the submicron lateral resolution of a Scanning Photoelectron Microscope with a custom designed Near Ambient Pressure Cell where a gas pressure up to 0.1 mbar can be achieved. In this manuscript a review of experiments performed with this unique setup will be presented to illustrate its potentiality in both fundamental and applicative research such as the oxidation reactivity and gas sensitivity of metal oxides and semiconductors. In particular, the capability to perform operando experiments with this setup opens the possibility to study operating devices and to properly address the real nature of the studied systems, because if microscopy and spectroscopy are simultaneously combined in a single technique it can yield to more conclusive results.