Abstract
Germanium (Ge) is an important semiconductor material in optoelectronic devices and is being researched in energy storage fields. Ge nanostructure materials with different morphologies may lead to distinctly different application performances. In this work, Ge nanorod architectures were successfully template-free electrodeposited on ITO substrate from the ionic liquid 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl) imide ([Emim]Tf2N) containing dissolved GeCl4 with the assistance of UV light. The UV irradiation influences the conformation of imidazolium rings of [Emim]+ adsorbed during the deposition process. A solution template has been formed on the surface of the electrode which inhibited the lateral growth of Ge nuclei and promoted the growth of Ge nanorod structures. Consequently, the coral-like Ge nanorod bundles (NRBs) has been obtained. This method provides attractive prospects for the other semiconductor nanorod structures.
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Acknowledgements
We thank National Natural Science Foundation of China (No. 51572058, 51502057), National Key Research & Development Program (2016YFB0303903, 2016YFE0201600), the International Science & Technology Cooperation Program of China (2013DFR10630, 2015DFE52770), and Foundation of Equipment Development Department (6220914010901).
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Chi, C., Hao, J., Yang, Y. et al. Template-free growth of coral-like Ge nanorod bundles via UV-assisted ionic liquid electrodeposition. J Mater Sci: Mater Electron 29, 14105–14110 (2018). https://doi.org/10.1007/s10854-018-9542-x
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DOI: https://doi.org/10.1007/s10854-018-9542-x