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AES investigations of chemical composition of some alkali compounds
Author(s) -
Dolizy P.,
Grolière F.
Publication year - 1983
Publication title -
surface and interface analysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.52
H-Index - 90
eISSN - 1096-9918
pISSN - 0142-2421
DOI - 10.1002/sia.740050104
Subject(s) - auger , auger electron spectroscopy , chemistry , chemical bond , photoelectric effect , analytical chemistry (journal) , alkali metal , auger effect , spectroscopy , chemical composition , yield (engineering) , atomic physics , matrix (chemical analysis) , materials science , optics , physics , metallurgy , organic chemistry , quantum mechanics , chromatography , nuclear physics
Auger electron spectroscopy is used as a quantitative and qualitative tool to investigate solid surfaces. Conventional quantitative analyses are based on the comparison of the Auger signal from the sample to that from pure standard. A detailed analysis of peak shape of Auger signal shows that the upper part of the derived Auger line (lower energy side) is strongly related to the chemical bonding whereas the lower part (high energy side) is nearly insensitive to the chemical effects. A calibration method for quantitative Auger spectroscopy based on the amplitude variation of the LVV Auger transitions of one element as a function of its chemical bonding within the compound is described. This method takes into account sample ‘matrix’ effects as well as all kinds of instrumental effects on the measured Auger signal. It has been also shown that AES can be used to make successful chemical analyses on alkali antimonides. A direct relation between electronic charge transfer between atoms and Auger peak shape has been observed, it is used to relate photoelectric quantum yield of SbK x compound to the ionicity of the Sb–K bond.