Abstract
Porous silicon/titania structures have been prepared for the first time by a sol-gel process in which a porous silicon layer was produced on single-crystal p-type silicon wafers and the titania was obtained from Ti-containing sol. The formation of TiO2, predominantly in the form of anatase, on the porous silicon surface was demonstrated by X-ray diffraction and energy dispersive X-ray analysis. The porous layers were found to contain carbon in addition to the host elements (Si, Ti, and O). Increasing the pore volume through the thermal oxidation of the porous silicon and dissolution of the oxide layer had little effect on the final Ti content, whereas the average pore diameter increased twofold, and the photoluminescence intensity in the porous silicon increased by 20 times.
Similar content being viewed by others
References
Gupta Shipra Mital and Tripathi Manoj, A review of TiO2 nanoparticles, Phys. Chem., 2011, vol. 56, no. 16, pp. 1639–1657.
Chien-Tsung Wang and Chen-Feng Yen, Titania nanocomposite thin films with enhanced photovoltaic efficiency: effects of Ti-alkoxide sol and compact layer, Surf. Coat. Technol., 2012, no. 206, pp. 2622–2627.
Memesa, M., Lenz, S., Emmerling, S., et al., Morphology and photoluminescence study of titania nanoparticles, Colloid Polym. Sci., 2011, no. 289, pp. 943–953.
Kupreeva, O.V., Lazaruk, S.K., Borisenko, V.E., et al., Photocatalytic properties of nanostructured titania, Zh. Prikl. Spektrosk., 2012, vol. 79, no. 6, pp. 1010–1013.
Ashurkevich, K.V., Nikolaenko, I.A., and Borisenko, V.E., Formation and properties of photo-catalitically active thick titania-containing films, Dokl. Beloruss. Gos. Univ. Inf. Radioelektron., 2012, no. 6, pp. 51–57.
Linnik, O., Smirnova, N., Zhukovskiy, M., et al., Influence of support nature on photocatalytic activity of TiO2 film, Adv. Sci. Eng. Med., 2013, vol. 5, no. 4, pp. 281–286.
Tank, C.M., Sakhare, Y.S., Kanhe, N.S., et al., Electric field enhanced photocatalytic properties of TiO2 nanoparticles immobilized in porous silicon template, Solid State Sci., 2011, no. 13, pp. 1500–1504.
Borisenko, V.E. and Ossicini, S., What is What in the Nanoworld, Weinheim: Wiley-VCH, 2012, 3rd ed.
Author information
Authors and Affiliations
Corresponding author
Additional information
Original Russian Text © N.M. Denisov, F.A. d’Avitaya, V.E. Borisenko, 2014, published in Neorganicheskie Materialy, 2014, Vol. 50, No. 6, pp. 620–624.
Rights and permissions
About this article
Cite this article
Denisov, N.M., d’Avitaya, F.A. & Borisenko, V.E. Formation and properties of porous silicon/titania nanostructures. Inorg Mater 50, 572–575 (2014). https://doi.org/10.1134/S0020168514060053
Received:
Published:
Issue Date:
DOI: https://doi.org/10.1134/S0020168514060053