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Funct. Mater. 2017; 24 (1): 052-055.

doi:https://doi.org/10.15407/fm24.01.052

Influence of gas adsorption on the impedance of porous GaAs

Y.S.Milovanov1, I.V.Gavrilchenko1, S.V.Kondratenko1, A.P.Oksanich2, S.E.Pritchin2, M.G.Kogdas2

1Institute of High Technologies, T.Shevchenko National University of Kyiv, 64 Volodymyrska Str., 06001 Kyiv, Ukraine
2Kremenchuk M.Ostrohradskyi National University, 20 Pershotravneva Str. 39600 Kremenchuk, Ukraine

Abstract: 

Porous GaAs was formed electrochemically on n-type GaAs in a HF:C2H5OH (1:3) electrolyte. The surface morphology of porous GaAs has been studied using atomic force microscopy (AFM). The hodographs of the total impedance and the adsorption influence of ethanol and acetone vapor on the charge transfer were examined.

Keywords: 
Porous GaAs, AFM, impedance spectroscopy, Nyquist plots.
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