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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Petrov, R. H. | Madrid |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Rančić, M. |
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| Azevedo, Nuno Monteiro |
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Gall, Sylvain Le
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Topics
Publications (6/6 displayed)
- 2020Mesopore Formation and Silicon Surface Nanostructuration by Metal-Assisted Chemical Etching With Silver Nanoparticlescitations
- 2017Advances in silicon surface texturization by metal assisted chemical etching for photovoltaic applicationscitations
- 2017Coupling Optical and Electrical Modelling for the study of a-Si:H-based nanowire Array Solar Cellscitations
- 2016Tunable Nanostructuration of Si by MACE with Pt nanoparticles under an applied external bias
- 2016Controlled elaboration of high aspect ratio cone-shape pore arrays in silicon by metal assisted chemical etching
- 2004Microstructuration of Silicon Surfaces Using Nanoporous Gold Electrodes
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document
Tunable Nanostructuration of Si by MACE with Pt nanoparticles under an applied external bias
Abstract
We present a study on metal assisted chemical etching of p-type c-Si with Pt nanoparticles, performed under controlled polarization of the Si sample in a 3-electrodes electrochemical setup. OCP measurements combined with impedance spectroscopy and cyclic voltammetry allow to give physical insights in the MACE process. In addition, the application of an external polarization during etching results in a straightforward control of the pore morphology, ranging from straight mesopores to cone-shaped macropores as the Si sample is positively biased. The latter morphology leads to a reduction of the surface reflectivity below 5% which compares favorably with state of the art texturization techniques for Si solar cells.