ChemNanoMat, volume 7, issue 12, pages 1355-1360
Electrochemical Etching of Germanium in Ionic Liquids without the Use of Toxic and Corrosive Reagents
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University of Rennes, UMR CNRS 6226, ISCR Institut des Sciences Chimiques de Rennes) Rennes France
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Publication type: Journal Article
Publication date: 2021-10-15
Materials Chemistry
Biomaterials
Energy Engineering and Power Technology
Renewable Energy, Sustainability and the Environment
Abstract
For the first time, the possibility of obtaining porous germanium from both single‐crystal and polycrystalline starting materials using environmentally friendly (in contrast to the commonly used HF and HCl) imidazolium ionic liquids (IL) was shown. It was demonstrated that pore formation depended significantly on the viscosity of the IL, on the etching current density and etching time, and on defects and imperfections of the substrate surface. By varying these parameters, the rates of two competing processes – formation and growth of pores and electropolishing – could be adjusted, consequently allowing germanium with a various structured surface, including a porous surface. In particular, using a more viscous IL (for example, [BMIM][PF6] versus [BMIM][BF4]) made it possible to reduce the rate of dissolution of the germanium dioxide surface layer; as a result, the formation and growth of pores became a dominant process. At the same time, the dissolution rate of the already formed porous layer (electropolishing) increased with the etching current density and the number of defects and imperfections of the germanium surface.
Citations by journals
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Journal of Physics and Chemistry of Solids
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Journal of Physics and Chemistry of Solids
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Elsevier
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Elsevier
1 publication, 100%
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Akyeva A. Y. et al. Electrochemical Etching of Germanium in Ionic Liquids without the Use of Toxic and Corrosive Reagents // ChemNanoMat. 2021. Vol. 7. No. 12. pp. 1355-1360.
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Akyeva A. Y., Farafonova S. D., Saverina E. A., Galushko A. S., Ananikov V. P., Egorov M. P., Jouikov V., Syroeshkin M. Electrochemical Etching of Germanium in Ionic Liquids without the Use of Toxic and Corrosive Reagents // ChemNanoMat. 2021. Vol. 7. No. 12. pp. 1355-1360.
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TY - JOUR
DO - 10.1002/cnma.202100338
UR - https://doi.org/10.1002%2Fcnma.202100338
TI - Electrochemical Etching of Germanium in Ionic Liquids without the Use of Toxic and Corrosive Reagents
T2 - ChemNanoMat
AU - Farafonova, Sofia D
AU - Galushko, Alexey S
AU - Egorov, Mikhail P.
AU - Syroeshkin, Mikhail
AU - Akyeva, Anna Ya.
AU - Saverina, Evgeniya A
AU - Ananikov, Valentine P.
AU - Jouikov, Viatcheslav
PY - 2021
DA - 2021/10/15 00:00:00
PB - Wiley
SP - 1355-1360
IS - 12
VL - 7
SN - 2199-692X
ER -
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@article{2021_Akyeva,
author = {Sofia D Farafonova and Alexey S Galushko and Mikhail P. Egorov and Mikhail Syroeshkin and Anna Ya. Akyeva and Evgeniya A Saverina and Valentine P. Ananikov and Viatcheslav Jouikov},
title = {Electrochemical Etching of Germanium in Ionic Liquids without the Use of Toxic and Corrosive Reagents},
journal = {ChemNanoMat},
year = {2021},
volume = {7},
publisher = {Wiley},
month = {oct},
url = {https://doi.org/10.1002%2Fcnma.202100338},
number = {12},
pages = {1355--1360},
doi = {10.1002/cnma.202100338}
}
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Akyeva, Anna Ya., et al. “Electrochemical Etching of Germanium in Ionic Liquids without the Use of Toxic and Corrosive Reagents.” ChemNanoMat, vol. 7, no. 12, Oct. 2021, pp. 1355-1360. https://doi.org/10.1002%2Fcnma.202100338.