Preparation of LaPO4 with Different Morphologies and Fluorescence Properties by Sol-Gel Spin-Coating Method

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Abstract:

Lanthanum Phosphate (LaPO4) nanostructures thin films have been successfully synthesized by sol-gel spin coating technique from lanthanum nitrate and ammonium phosphate in ammonia solution. The procedure starting with formation of homogenous and transparent solution followed with annealing to form the LaPO4 nanostructures thin films. The films were annealed at different temperature to study its effect to the surface morphology and optical properties of the films. The phosphate particles are having near-spherical to rod-like nanostructures with an average size about 15 nm. The morphology is retained even the annealing temperature is increased. Furthermore, photoluminescence (PL) characterization of LaPO4 also was reported. The effect of annealing temperature was discussing detail. The intensity as well as optical brightness is highly dependent on anneal temperature. Fourier transform infra red spectra of films obtained are similar to the previous synthesis of phosphate. Thus, confirmed the formation of LaPO4 on the glass substrate.

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November 2013

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[1] A.Z. Zainurul, M.Rusop, and S.Abdullah, Effect of Annealing Temperature on Surface Morphology of Lanthanum Phosphate (LaPO4) Nanostructures Thin Films, Advanced Materials Research 626 (2012) 302-305.

DOI: 10.4028/www.scientific.net/amr.626.302

Google Scholar

[2] K. Rajesh, P. Shajesh, B. Pullithadathil, and K. G. Warrier, High surface area mesoporous nanocrystalline lanthanum phosphate nanorod through a sol–gel process – Effect of alcohol washing on a non-oxide gel, Microporous and Mesoporous Materials 116 (2008) 693-697.

DOI: 10.1016/j.micromeso.2008.06.012

Google Scholar

[3] V. Pankratov, A. I. Popov, A. Kotlov, and C. Feldmann, Luminescence of nano- and macrosized LaPO4:Ce,Tb excited by synchrotron radiation, Optical Materials 33 (2011) 1102-1105.

DOI: 10.1016/j.optmat.2010.12.019

Google Scholar

[4] K. Rajesh, P. Shajesh, O. Seidel, P. Mukundan, and K. G. K. Warrier, A Facile Sol–Gel Strategy for the Synthesis of Rod-Shaped Nanocrystalline High-Surface-Area Lanthanum Phosphate Powders and Nanocoatings, Advanced Functional Materials 17 (2007) 1682-1690.

DOI: 10.1002/adfm.200600794

Google Scholar

[5] B. Y. Ahn, S. I. Seok, S.-I. Hong, J.-S. Oh, H.-K. Jung, and W. J. Chung, Optical properties of organic/inorganic nanocomposite sol-gel films containing LaPO4:Er,Yb nanocrystals, Optical Materials 28 (2006) 374-379.

DOI: 10.1016/j.optmat.2005.02.003

Google Scholar

[6] H. Onoda and T. FunamotoSynthesis and Fluorescence Properties of Europium-Substituted Lanthanum Orthophosphate and Condensed Phosphates, Advances in Materials Physics and Chemistry 2 (2012) .

DOI: 10.4236/ampc.2012.21008

Google Scholar

[7] K. Mi, Y. Ni, Y. Xu, X. Ma, and J. Hong, A simple mixed-solvothermal route for LaPO4 nanorods: Synthesis, characterization, affecting factors and PL properties of LaPO4:Ce3+, Journal of Colloid and Interface Science 356 (2011) 490- 495.

DOI: 10.1016/j.jcis.2011.01.076

Google Scholar

[8] Y.S. Patil, K.G. Chaudhari, N.V. Poornachandra Rao, and K.V.R. Murthy, Effect of Erbium Doping on Structural and Photoluminescence Properties of LaPO4:Eu Phosphor, Advances in Applied Science Research 2 (2011) 303-309.

Google Scholar

[9] Gun Young Hong, Byung Soo Jeon, Y. K. Y. and, and J. S. Yoo Photoluminescence Characteristics of Spherical  Y 2 O 3 : Eu Phosphors by Aerosol Pyrolysis, J. Electrochem. Soc. 148 (2001) H161-H166.

DOI: 10.1149/1.1406496

Google Scholar

[10] H.-K. Jung, J.-S. Oh, S.-I. Seok, and T.-H. Lee, Preparation and luminescence properties of LaPO4:Er,Yb nanoparticles, Journal of Luminescence 114 (2005) 307-313.

DOI: 10.1016/j.jlumin.2005.01.010

Google Scholar

[11] S. Sankar and K. Warrier, Aqueous sol–gel synthesis of lanthanum phosphate nano rods starting from lanthanum chloride precursor, Journal of Sol-Gel Science and Technology 58 (2011) 195-200.

DOI: 10.1007/s10971-010-2377-4

Google Scholar