Browse > Article

Preparation of Hexaaluminate Phosphor Particles with Spherical Shape by Gas Phase Reaction Process  

Jung, Dae Soo (Department of Chemical Engineering, Konkuk University)
Hong, Seung Kwon (Department of Chemical Engineering, Konkuk University)
Koo, Hye Young (Department of Chemical Engineering, Konkuk University)
Ju, Seo Hee (Department of Chemical Engineering, Konkuk University)
Kang, Yun Chan (Department of Chemical Engineering, Konkuk University)
Publication Information
Korean Chemical Engineering Research / v.43, no.5, 2005 , pp. 616-620 More about this Journal
Abstract
The morphology and photoluminescence characteristics of green light emitting hexaaluminate phosphor particles prepared by high temperature spray pyrolysis from spray solution with and without ammonium dihydrogen phosphate flux were investigated. The particles prepared from spray solution without flux material had hollow morphology at preparation temperatures between $900^{\circ}C$ and $1,650^{\circ}C$. Ammonium dihydrogen phosphate flux added into spray solution enabled the formation of particles with spherical shape and filled morphology at preparation temperatures between $900^{\circ}C$ and $1,650^{\circ}C$. The hexaaluminate phosphor particles with magnetoplumbite structure were directly prepared by spray pyrolysis from spray solution with ammonium dihydrogen phosphate flux above $1,600^{\circ}C$. Ammonium dihydrogen phosphate flux was effective in improving the photoluminescence intensity of the phosphor particles at low preparation temperatures. The phosphor particles prepared from spray solution with and without flux material by spray pyrolysis under reducing atmosphere at $1,650^{\circ}C$ had comparable photoluminescence intensities with that of the phosphor particles optimized by post-treatment.
Keywords
Phosphor; Spray Pyrolysis; Display Material;
Citations & Related Records
연도 인용수 순위
  • Reference
1 Shimomura, Y. and Kijima, N., 'Effect of Ammonium Chloride Addition on Spray Pyrolysis Synthesis of $BaMgAl_{10}O_{17}$:$Eu^{2+}$ Phosphor Without Post-heating,' J. Electrochem. Soc., 151(8), H192- H197(2004)   DOI   ScienceOn
2 Kang, Y. C., Seo, D. J., Park, S. B. and Park, H. D., 'Morphological and Optical Characteristics of $Y_2O_3$:Eu Phosphor Particles Prepared by Flame Spray Pyrolysis,' Jpn. J. Appl. Phys., 40(6A), 4083-4086(2001)   DOI
3 Shimomura, Y. and Kijima, N., 'Formation Mechanisms and Control Method of Aluminum-containing Impurity in High-temperature Spray Pyrolysis of $Y_2O_3$:$Eu^{3+}$ Phosphor,' Electrochem. Solid-State Lett., 7(5), H18-H22(2004)   DOI   ScienceOn
4 Roh, H. S., Kim, E. J., Kang, H. S., Kang, Y. C., Park, H. D. and Park, S. B., 'Vacuum Ultraviolet Characteristics of Nano-sized $Gd_2O_3$:Eu Phosphor Particles,' Jpn. J. Appl. Phys., 42, 2741-2745 (2003)   DOI
5 Smets, B. M. J., 'Phosphors Based on Rare-earths, A New Era in Fluorescent Lighting,' Mater. Chem. Phys., 16, 283-299(1987)   DOI   ScienceOn
6 Shimomura, Y. and Kijima, N., 'High-Temperature Spray Pyrolysis of $Y_2O_3$:$Eu^{3+}$ Red Phosphor,' Electrochem. Solid-State Lett., 7(2), H1-H4(2004)   DOI
7 Kim, E. J., Kang, Y. C., Park, H. D. and Ryu, S. K., 'UV and VUV Characteristics of $(YGd)_2O_3$:Eu Phosphor Particles Prepared by Spray Pyrolysis from Polymeric Precursors,' Mater. Res. Bull., 38, 515-524(2003)   DOI   ScienceOn
8 Kang, Y. C., Roh, H. S. and Park, S. B., 'Use of LiCl Flux in the Preparation of $Y_2O_3$:Eu Phosphor Particles by Spray Pyrolysis,' J. Eur. Ceram. Soc., 22, 1661-1665(2002)   DOI   ScienceOn
9 Shimomura, Y. and Kijima, N., 'High-Luminance $Y_2O_3$:$Eu^{3+}$ Phosphor Synthesis by High Temperature and Alkali Metal Ion-added Spray Pyrolysis,' J. Electrochem. Soc., 151(4), H6-H2(2004)   DOI
10 Chang, H., Lenggoro, I. W., Ogi, T. and Okuyama, K., 'Direct Synthesis of Barium Magnesium Aluminate Blue Phosphor Particles Via a Flame Route,' Mater. Lett., 59(10), 1183-1187(2005)   DOI   ScienceOn
11 Kang, Y. C., Roh, H. S. and Park, S. B., 'Preparation of $Y_2O_3$:Eu Phosphor Particles of Filled Morphology at High Precursor Concentrations by Spray Pyrolysis,' Adv. Mater., 12, 451-453(2000)   DOI   ScienceOn
12 Zhang, J., Zhang, Z., Tang, Z. and Lin, Y., '$Mn^{2+}$ Luminescence in (Ce,Tb)$MgAl_{11}O_{19}$ Phosphor,' Mater. Chem. Phys., 72, 81-84(2001)   DOI   ScienceOn