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Issue 15, 2012
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Three-dimensionally ordered macroporous silicon films made by electrodeposition from an ionic liquid

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Abstract

Three dimensionally ordered macroporous (3DOM) silicon films have been made via ordered polystyrene (PS) templates by electrodeposition from an ionic liquid (IL). For this purpose, the ionic liquid 1-butyl-1-methylpyrrolidinium bis(trifluoromethylsulfonyl)amide ([Py1,4]Tf2N) with SiCl4 dissolved in it was used as an electrolyte and the electrodeposition of macroporous silicon could be achieved at room temperature (∼20 °C). Self-assembled PS colloidal crystals with different diameters were used as templates. Scanning electron microscopy and X-ray photoelectron spectroscopy confirm the quality of the samples, and the optical transmission measurement demonstrates that the 3DOM silicon film has a bandgap in the near infrared regime. Such a material has the potential to make 3DOM silicon feasible for electrical and optical applications.

Graphical abstract: Three-dimensionally ordered macroporous silicon films made by electrodeposition from an ionic liquid

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Publication details

The article was received on 14 Oct 2011, accepted on 28 Nov 2011 and first published on 29 Nov 2011


Article type: Paper
DOI: 10.1039/C2CP23236G
Phys. Chem. Chem. Phys., 2012,14, 5100-5105

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    Three-dimensionally ordered macroporous silicon films made by electrodeposition from an ionic liquid

    X. Liu, Y. Zhang, D. Ge, J. Zhao, Y. Li and F. Endres, Phys. Chem. Chem. Phys., 2012, 14, 5100
    DOI: 10.1039/C2CP23236G

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