A novel organic-free sol-gel route to ceria-zirconia-alumina thin films and glassy products

Elena V. Frolova; Mariya I. Ivanovskaya; Yuliya A. Kosareva; Vitalii P. Petranovskii; Sergio I. Fuentes

doi:10.1117/12.559709

14 October 2004 A novel organic-free sol-gel route to ceria-zirconia-alumina thin films and glassy products

Elena V. Frolova, Mariya I. Ivanovskaya, Yuliya A. Kosareva, Vitalii P. Petranovskii, Sergio I. Fuentes

Proceedings Volume 5513, Physical Chemistry of Interfaces and Nanomaterials III; (2004) https://doi.org/10.1117/12.559709
Event: Optical Science and Technology, the SPIE 49th Annual Meeting, 2004, Denver, Colorado, United States

Abstract

Successful preparation of the Ce-Zr-Al oxide thin films and glassy products by a newly developed organic-free modification of the sol-gel technique is reported. The structural composition and some properties of the samples obtained were investigated by TEM, XRD, FTIR, ESR, UV-Vis, PL and XPS. The optical investigation of the obtained films together with ESR data indicate the appearance of the bulk Ce³⁺-defects (g⊥ = 1.962-1.967, g// = 1.938-1.940, assigned to 4f¹ state, with concentration ~2•1018spin/g). The significant PL intensity rising at elevated temperature was related to spontaneous increasing of Ce³⁺ concentration in sol-gel samples under thermal dehydration. Also, an unexpected formation of intra-band gap states during thermal treatment of xerogels was manifested in UV-Vis spectra. This intra-band-gap states was attributed to the oxygen related defects that contribute to PL signal.

Citation Download Citation

Elena V. Frolova, Mariya I. Ivanovskaya, Yuliya A. Kosareva, Vitalii P. Petranovskii, and Sergio I. Fuentes "A novel organic-free sol-gel route to ceria-zirconia-alumina thin films and glassy products", Proc. SPIE 5513, Physical Chemistry of Interfaces and Nanomaterials III, (14 October 2004); https://doi.org/10.1117/12.559709

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