Open AccessModification of the GaSb(100) surface in ammonium sulfide solutions - morphology and stoichiometry
Author(s) -
P. A. Dementev,
М. В. Лебедев,
T. V. L’vova
Publication year - 2019
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1400/7/077055
Subject(s) - passivation , stoichiometry , sulfide , x ray photoelectron spectroscopy , aqueous solution , morphology (biology) , ammonium , inorganic chemistry , materials science , hydrogen sulfide , chemistry , chemical engineering , layer (electronics) , nanotechnology , metallurgy , organic chemistry , sulfur , biology , engineering , genetics
The changes in the stoichiometry and morphology of the GaSb(100) surface in the process of sulfide passivation with aqueous and alcoholic ammonium sulfide solutions were studied by AFM and XPS. It was found that after sulfide treatment the Ga/Sb ratio can vary in the range from 0.13 to 3, while the surface roughness can be changed from 1.1 to 5.5, depending on the concentration of the (NH 4 ) 2 S solution, solvent and passivation time.