Abstract
RbVO3, CsVO3, and Rb0.5Cs0.5VO3 have been synthesized by the Pechini process. The vanadates have an orthorhombic structure (sp. gr. Pbcm), melt congruently in the range 650–530°C, and undergo a reversible phase transition in the range 520–340°C. We have determined the onset temperatures and end points of the transformations at a temperature scan rate of 3°C/min and their enthalpies, and measured the photo-, roentgeno-, and cathodoluminescence and diffuse reflectance spectra of the vanadates. The luminescence spectra each are well fitted with three pseudo-Voigt functions. CsVO3 has the highest integrated emission intensity. The emission intensity of the Rb0.5Cs0.5VO3 solid solution is lower than that of the simple vanadates because of the optical absorption around its intrinsic luminescence band. This may be due to the presence of stable vacancy-type structural defects in Rb0.5Cs0.5VO3.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Fotiev, A.A., Shul’gin, B.V., Moskvin, A.S., and Gavrilov, F.F., Vanadievye kristallofosfory. Sintez i svoistva (Synthesis and Properties of Crystalline Vanadium Phosphors), Moscow: Nauka, 1976.
Slobodin, B.V., Surat, L.L., et al., Structural, Luminescence and Electronic Properties of the Alkaline Metal-Strontium Cyclotetravanadates M2Sr(VO3)4, (M = Na, K, Rb, Cs), Phys. Rev. B: Condens. Matter Mater, Phys., 2005, vol. 72, paper 155 205.
Shul’gin, B.V., Slobodin, B.V., Zubkov, V.G., et al., Lyuminestsentsiya dvoinykh vanadatov. Atlas spektrov (Luminescence of Double Vanadates: Atlas of Spectra), Yekaterinburg: Ural. Otd. Ross. Akad. Nauk, 2010.
Nakajima, T., Isobe, M., Tsuchiya, T., et al., Direct Fabrication of Metavanadate Phosphor Films on Organic Substrates for White-Light-Emitting Devices, Nat. Mater., 2008, vol. 7, pp. 735–740.
Nakajima, T., Isobe, M., Tsuchiya, T., et al., Correlation between Luminescence Quantum Efficiency and Structural Properties of Vanadate Phosphors with Chained, Dimerized and Isolated VO4 Tetrahedra, J. Phys. Chem. C, 2010, vol. 114, no. 11, pp. 5160–5167.
Fotiev, A.A., Glazyrin, M.P., and Volkov, V.L., Vanadium Oxide Compounds, Tr. Inst. Khim., Ural. Fil., Akad. Nauk SSSR, 1970, no. 22.
Slobodin, B.V., Vanadaty s-elementov (s-Element Vanadates), Yekaterinburg: Ural. Otd. Ross. Akad. Nauk, 2008.
Fotiev, A.A. and Ivakin, A.A., Formation of Alkali Vanadates, Tr. Inst. Khim., Ural. Fil., Akad. Nauk SSSR, 1970, no. 19.
Power Diffraction File, Swarthmore: Joint Committee on Power Diffraction Standards, JCPDSD-ICDD PDF2, 2006.
Nakajima, T., Isobe, M., Tsuchiya, T., et al., A Revisit of Photoluminescence Property for Vanadate Oxides AVO3 (A: K, Rb and Cs) and M3V2O8 (M: Mg and Zn), J. Lumin., 2009, vol. 129, no. 12, pp. 1598–1601.
Gusev, A.I., Rempel, A.A., and Magerl, A.J., Disorder and Order in Strongly Nonstoichiometric Compounds: Transition Metal Carbides, Nitrides and Oxides, Berlin: Springer, 2001.
Author information
Authors and Affiliations
Corresponding author
Additional information
Original Russian Text © B.V. Slobodin, A.V. Ishchenko, R.F. Samigullina, O.S. Teslenko, B.V. Shul’gin, D.Yu. Zhurakovskii, 2011, published in Neorganicheskie Materialy, 2011, Vol. 47, No. 10, pp. 1237–1242.
Rights and permissions
About this article
Cite this article
Slobodin, B.V., Ishchenko, A.V., Samigullina, R.F. et al. Thermochemical and luminescent properties of RbVO3, CsVO3, and Rb0.5Cs0.5VO3 . Inorg Mater 47, 1126–1131 (2011). https://doi.org/10.1134/S0020168511100190
Received:
Published:
Issue Date:
DOI: https://doi.org/10.1134/S0020168511100190