분무열분해 공정에 의해 합성되어진 나노 크기 Gd 2 O 3 :Eu형광체

김은정; 강윤찬; 박희동; 유승곤; Eun Joung Kim; Yun Chan Kang; Hee Dong Park; Seung Kon Ryu

Korean Journal of Materials Research, Vol.12, No.10, 771-775, October, 2002

DOI10.3740/MRSK.2002.12.10.771 Export Citation

분무열분해 공정에 의해 합성되어진 나노 크기 Gd 2 O 3 :Eu형광체

Nano-sized Gd 2 O 3 :Eu Phosphor Prepared by Spray Pyrolysis

김은정^{1, 2}, 강윤찬 ^{1, †}, 박희동 ¹, 유승곤 ²

¹한국화학연구원 화학소재부
²충남대학교 화학공학과

Eun Joung Kim^{1, 2}, Yun Chan Kang^{1, †}, Hee Dong Park¹, and Seung Kon Ryu²

¹Advanced Materials Division, Korea Research Institute of Chemical Technology, P.O. Box 107, Yuseong-gu, Daejeon 305-600, Korea
²Department of Chemical Engineering, Chungnam National University, 220 Gung-dong, Yuseong-gu, Daejeon, Korea, 305-764

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Gd 2 O 3 :Eu phosphor particles with nano-sized and non-aggregation characteristics were prepared by spray pyrolysis using the spray solution containing polymeric precursor and Li 2 CO 3 flux material. Nano-sized Gd 2 O 3 :Eu phosphor particles had higher brightness than the commercial Y 2 O 3 :Eu phosphor particles. The Gd 2 O 3 :Eu phosphor particles had nano-size and non-aggregation characteristics after heat-treatment at 1000 ? C when the addition amount of Li 2 CO 3 flux was 1 wt.% and 3 wt.%. The mean size of particles were 200 nm and 400 nm when the amount of flux was 1 wt.% and 3 wt.%, respectively. The prepared phosphor particles had higher photoluminescence intensity than that of the commercial product regardless of the content of Li 2 CO 3 flux and had the maximum brightness when the content of flux was 5 wt %. The photoluminescence intensity of the nano-sized Gd 2 O 3 :Eu phosphor particles containing 3 wt.% Li 2 CO 3 flux was 125% in comparison with that of the micron-sized Y 2 O 3 :Eu commercial product.

Keywords:phosphor;spray pyrolysis;nano particles;display

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Sievers RE, Milewski PD, Xu CY, Watkins BA, Ext. Abst. 3rd Int'l Conf. Sci. & Tech. Display Phosphors, pp.303, Huntington Beach, CA, 1997 (1997)
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Rao RP, J. Electrochem. Soc., 143(1), 189 (1996)
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Xu C, Wakins BA, Sievers RE, Jing X, Trowga P, Gibbons CS, Vecht A, Appl. Phys. Lett., 71, 1643 (1997)
Toki H, Kataoka F, Satoh Y, Kagawa Y, Itoh S, 'Phosphors for Low-Voltage Electron Excitation,' Proceedings of the 2nd International Display Workshops, Hamamatsu, Japan, 81-84, (1995) (1995)

[Related Articles]

[1] Yamamoto H, J. SID, 4/3, 165 (1996)

[2] Sievers RE, Milewski PD, Xu CY, Watkins BA, Ext. Abst. 3rd Int'l Conf. Sci. & Tech. Display Phosphors, pp.303, Huntington Beach, CA, 1997 (1997)

[3] Jiang YD, Wang ZL, Zhang F, Paris HP, Summers CJ, Ext. Abst. 3rd Int'l Conf. Sci. & Tech. Display Phosphors, pp.261, Huntington Beach, CA, 1997 (1997)

[4] Park JC, Moon HK, Kim DK, Byeon SH, Kim BC, Suh KS, Appl. Phys. Lett., 77, 2162 (2000)

[5] Rao RP, J. Electrochem. Soc., 143(1), 189 (1996)

[6] Koike J, Kojima T, Toyonaga R, Kahami A, Hase T, Inaho S, This Journal, 126, 1008 (1979)

[7] Qiang S, Barthou C, Denis JP, Pelle F, Blanzat B, J. Lumin., 28, 1 (1993)

[8] Villalobos G, Leclerq O, Paris H, Summers CJ, Ext. Abs. 3rd Int'l Conf. Sci. & Tech. Display Phosphors, pp.253, Huntington Beach, CA, 1997 (1997)

[9] Bihari B, Eilers H, Tissue BM, J. Lumin., 75, 1 (1997)

[10] Xu C, Wakins BA, Sievers RE, Jing X, Trowga P, Gibbons CS, Vecht A, Appl. Phys. Lett., 71, 1643 (1997)

[11] Toki H, Kataoka F, Satoh Y, Kagawa Y, Itoh S, 'Phosphors for Low-Voltage Electron Excitation,' Proceedings of the 2nd International Display Workshops, Hamamatsu, Japan, 81-84, (1995) (1995)