Composition of uncontrolled impurities and their chemical states and depth profiles at the Al-Si interface
А.А. АбдувайитовTashkent State Technical University, Universitetskaya ul. 2, Tashkent, 100095, UzbekistanKh. Kh. BoltaevTashkent State Technical University, Universitetskaya ul. 2, Tashkent, 100095, Uzbekistan
ABI
Abstract
Auger electron spectroscopy and secondary-ion mass spectrometry are used to study the compositions of uncontrolled impurity atoms, their chemical composition, and the atomic distribution profiles at the Al-Si interface. Low concentrations (<0.1%) of impurity C, O, N, Ti, Fe, and other atoms are detected in Al. An analysis of the chemical shifts of the Auger peaks of metal atoms shows that compounds of the AlO and Al2O3 types form at the Al-Si interface.
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