Title of article
Composition and morphology of fluorinated anodic oxides on InAs (1 1 1)A surface
Author/Authors
N.A. Valisheva، نويسنده , , O.E. Tereshchenko )، نويسنده , , I.P. Prosvirin، نويسنده , , T.A. Levtsova، نويسنده , , E.E. Rodjakina، نويسنده , , A.V. Kovchavcev، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2010
Pages
5
From page
5722
To page
5726
Abstract
The composition and morphology of fluorinated anodic oxide (FAO) films grown on InAs (1 1 1)A in alkaline aqueous (pH 11.5) and acid waterless (pH 1.5) electrolytes are studied by means of X-ray photoelectron spectroscopy (XPS), atomic force microscopy (AFM) and high resolution transmission electron microscopy (HRTEM) in order to reveal the passivation mechanism of fluorine on the FAO/InAs(1 1 1)A interface. The formation of the highest oxidation form of As+5 and passivation of defects in the FAO layers during the fluorination process explain the reduction of the density of surface states and unpinning of the Fermi level on the fluorinated AO/InAs(1 1 1)A interface.
Keywords
InAs , Interface , Anodic oxide , Phase composition , Surface states , Passivation
Journal title
Applied Surface Science
Serial Year
2010
Journal title
Applied Surface Science
Record number
1012932
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