Sulfidization of GaAs in alcoholic solutions: a method having an impact on efficiency and stability of passivation

Photoluminescence and XPS were used to show that the effectiveness of GaAs sulfur passivation could be increased by using sulfide solutions in which alcohols with a low dielectric constant are used as solvents. It has been found that with the decrease in the solvent dielectric constant, in such solu...

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Bibliographic Details
Published in:Materials science & engineering. B, Solid-state materials for advanced technology Solid-state materials for advanced technology, 1997-02, Vol.44 (1), p.376-379
Main Authors: Bessolov, Vasily N., Konenkova, Elena V., Lebedev, Mikhail V.
Format: Article
Language:English
Subjects:
Alcohols
Oxide layer
Photoluminescence
Sulfur passivation
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Summary:Photoluminescence and XPS were used to show that the effectiveness of GaAs sulfur passivation could be increased by using sulfide solutions in which alcohols with a low dielectric constant are used as solvents. It has been found that with the decrease in the solvent dielectric constant, in such solutions the surface sulfur coverage increases, the thickness of the native oxide layer decreases, and the efficiency of band-edge photoluminescence increases.
ISSN:0921-5107
1873-4944
DOI:10.1016/S0921-5107(96)01816-8