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Electrodeposition Growth of Oriented ZnO Deposits in Ionic Liquid Media

Tulodziecki, Michal and Tarascon, Jean-Marie and Taberna, Pierre-Louis and Guéry, Claude Electrodeposition Growth of Oriented ZnO Deposits in Ionic Liquid Media. (2012) Journal of The Electrochemical Society (JES), 159 (12). D691-D698. ISSN 0013-4651

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Official URL: https://doi.org/10.1149/2.027212jes


ZnO is a material of great interest for microelectronics because it offers a panel of attractive physical properties. It has been grown for decades as thin films from a wide variety of physical-chemical deposition techniques, most of them leading to films oriented with the polar direction perpendicular to the substrate. Here we report the electrodeposition of ZnO in ionic liquids (EMImTFSI (1-ethyl-3methylimidazolium bis(trifluoromethylsulfonyl)imide), BMPTFSI (1-Butyl-1-Methylpyrrolidinium bis(trifluoromethylsulfonyl)imide) or BMImTf (1-butyl-3-methylimidazolium trifluoromethanesulfonate)), together with the feasibility of manipulating the growth orientation of the ZnO deposits by adding the proper co-solvent to ionic liquid.We establish solvent dielectric constant as a key parameter to tailor the deposit growth direction. Moreover, via the use of Electrochemical Quartz Crystal Microbalance (EQCM) measurements, we determine the importance of the competition between Zn2+ and O2 reduction to properly trigger the transport phenomena leading to the growth of ZnO. This work provides insight which can be implemented to the growth of other binary and ternary oxides deposits in ionic liquid media, a field still poorly explored.

Item Type:Article
HAL Id:hal-02018952
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UT3 (FRANCE)
Other partners > Université de Picardie Jules Verne (FRANCE)
Other partners > ALISTORE-ERI (FRANCE)
Laboratory name:
Deposited On:14 Feb 2019 10:32

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