AVS 61st International Symposium & Exhibition
    Applied Surface Science Monday Sessions
       Session AS+MC-MoM

Invited Paper AS+MC-MoM3
Quantitative Analysis of Nanostructured Surfaces by means of X-ray Photoelectron Spectroscopy: Theory and Applications

Monday, November 10, 2014, 9:00 am, Room 316

Session: Quantitative Surface Analysis
Presenter: Wolfgang Werner, Vienna University of Technology, Austria
Correspondent: Click to Email
The theory of signal emission in electron spectroscopy is discussed on the basis of the so-called Landau-Goudsmit-Saunderson (LGS) loss function, which leads in a natural way to rigorous spectrum analysis techniques, the so--called partial intensity analysis (PIA). Examples of applications include theoretical calculation of model spectra as well as analysis of experimental spectra using of X-ray Photoelectron Spectroscopy (XPS) and Reflection Electron Energy Loss Spectroscopy on nanostructured surfaces [1], the contribution of in-vacuo electron scattering to electron spectra [2] and secondary electron–electron energy loss coincidence spectroscopy (SE2ELCS) [3]. In the latter technique correlated electron pairs are analysed and detected, thereby giving unique insight into the dielectric properties of a solid.

A layered electron gas system will be considered as an important case study for quantitative surface analysis: it is shown how single layer graphene data can be extracted from measurements on macroscopic three dimensional highly oriented pyrolithic graphite (HOPG) samples. After appropriate analysis, a feature in the spectrum can be identified which quantitatively correlates with the sp2-content in arbitrary carbon samples, as follows from comparison with Raman measurements.

[1] W S M Werner, Surf. Interf. Anal. 31(2001)141

[2] Werner, Wolfgang S. M., Novak, Mihaly, Salvat-Pujol, Francesc, Jiricek, Petr, Zemek, Josef, PRL 110(2013)086110

[3] W. S. M. Werner, F. Salvat-Pujol, A. Bellissimo, R. Khalid, W. Smekal, M. Novak A. Ruocco and G. Stefani, Phys. Rev. B 88(2013)201407