Abstract
Tb doped Y2SiO5 phosphor particles with spherical morphology, fine size, high crystallinity and good photoluminescence intensity were prepared by spray pyrolysis. The colloidal solution obtained by adding the fumed silica particles was introduced to control the characteristics of Y2SiO5: Tb phosphor particles. The particles prepared from the colloidal solution had a spherical and filled morphology even after post-treatment. The particles post-treated below 1,200 ‡C had X1 type crystal structure but the crystal structure changed from X1 to X2 after post-treatment above 1,300 ‡C. When crystal structure was changed from X1 to X2, the PL intensity greatly increased. The maximum PL intensity of particles, which were prepared from the solution with 120% excess of stoichiometric fumed silica, was about 4 times higher than that of the particles prepared from the stoichiometric solution. The particles prepared from the stoichiometric solution of yttrium nitrate and fumed silica had mixed phases of X1 and X2 type and had impurity as Y2O3. On the other hand, the particles prepared from the solution with 120% excess of stoichiometric fumed silica had high crystallinity of X2 type.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Chang, L. F., Brownlow, J. W., Sun, T. I. and Wilson, J. S., “Refinement of Zinc Silicate Phosphor Synthesis”,J. Electrochem. Soc,136(11), 3532 (1989).
Hampden-Smith, M. J., Kodas, T. T. and Caruso, J., “Oxygen-Contain-ing Phosphor Powders, Methods for Making Phosphor Powders and Devices Incorporating Same”, US. Patent 6,180029 B1 (2001).
Jung, K. Y. and Park, S. B., “Effect of Calcination Temperature and Ad-dition of Silica, Zirconia, Alumina on the Photocatalytic Activity of Titania”,Korean J. Chem. Eng.,18(6), 879 (2001).
Kang, Y. C. and Park, S. B., “Preparation of Zinc Oxide-Dispersed Sil-ver Particles by Spray Pyrolysis of Colloidal Solution”,Mater. Lett.,40(3), 129 (1999).
Kang, Y. C., Lenggoro, I. W., Okuyama, K. and Park, S. B., “Lumines-cence Characteristics of Y2SiO5: Tb Phosphor Particles Directly Pre-pared by the Spray Pyrolysis Method”,J. Electrochem. Soc,146(3), 1227 (1999).
Kang, Y. C., Roh, H. S. and Park, S. B., “Preparation of Y2O3: Eu Phos-phor Particles of Filled Morphology at High Precursor Concentra-tions by Spray Pyrolysis”,Adv. Mater.,12(6), 451 (2000).
Lenggoro, I. W., Iskandar, F., Mizushima, H., Xia, B., Okuyama, K. and Kijima, N., “One-Step Synthesis for Zn2SiO4: Mn Particles 0.3-1.3 Μm in Size with Spherical Morphology and Non-Aggregation^'Jpn. J. Appl. Phys.,39, L1051 (2000).
Lim, M. A., Kang, Y C. and Park, H. D., “Gd2O3: Eu Phosphor Parti-cles Prepared from the Polymeric Precursors in Spray Pyrolysis”,J. Electrochem. Soc.,148(12), H171 (2002).
Ohno, K. and Abe, T., “The Synthesis and Particle Growth Mechanism of Bright Green Phosphor YAG: Tb”,J. Electrochem. Soc.,141(5), 1252 (1994).
Ravichandran, D., Roy, R., Chakhovskoi, A. G., Hunt, C. E., White, W. B. and Erdei, S., “Fabrication of Y3A15O12: Eu Thin Films and Pow-ders for Field Emission Display Applications”,J. Lumin.,71, 291 (1997).
Shen, X. A. and Kachru, R, “7F0-5D1 Transition in Eu3+: Y2SiO5”,J. Opt. Soc. Am.,B11, 591 (1994).
Sohn, J. R., Kang, Y. C. and Park, H. D., “Morphological Control of Y2O3: Eu Phosphor Particles by Adding Polymeric Precursors in Spray Pyrolysis”,Jpn. J. Appl. Phys.,41, 3006 (2002).
Sohn, K. S., Cho, B. H. and Park, H D., “Thotoluminescence Behavior of Manganese-Doped Zinc Silicate Phosphors”,J. Am. Ceram. Soc,82(10), 2779 (1999).
Vanheusden, K., Seager, C. H., Warren, W L., Tallant, D. R., Caruso, J., Hampden-Smith, M. J. and Kodas, T. T., “Green Photolumines-cence Efficiency and Free-Carrier Density in ZnO Phosphor Pow-ders Prepared by Spray Pyrolysis”,J. Lumin.,75(1), 11 (1997).
Yin, M., Zhang, W, Xia, S. and Krupa, J. C., “Luminescence of Nano-metric Scale Y2SiO5: Eu3+”,J. Lumin.,68, 335 (1996).
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Kang, HS., Kang, YC., Park, HD. et al. Green-emitting yttrium silicate phosphor particles prepared by large scale ultrasonic spray pyrolysis. Korean J. Chem. Eng. 20, 930–933 (2003). https://doi.org/10.1007/BF02697301
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/BF02697301