분무열분해법에 의해 제조된 구형의 녹색 LaPO 4 :Tb 형광체의 발광특성

이교광; 강윤찬; 전일운; 정경열; 박희동; Kyo Kwang Lee; Yun Chan Kang; Il Woon Zeon; Kyeong Youl Jung; Hee Dong Park

Korean Journal of Materials Research, Vol.12, No.9, 761-766, September, 2002

DOI10.3740/MRSK.2002.12.9.761 Export Citation

분무열분해법에 의해 제조된 구형의 녹색 LaPO 4 :Tb 형광체의 발광특성

Photoluminescence Characteristics of Spherical-Shaped LaPO 4 :Tb Phosphor Particles Prepared by Spray Pyrolysis

이교광, 강윤찬 ^†, 전일운, 정경열 , 박희동

한국화학연구원 화학소재부

Kyo Kwang Lee, Yun Chan Kang^†, Il Woon Zeon, Kyeong Youl Jung , and Hee Dong Park

Advanced Materials Division, Korea Research Institute of Chemical Technology, 100, Jang-dong, Yusong-gu, Daejeon, Korea, 305-600

E-mail:

Fine LaPO 4 :Tb phosphor particles with spherical shape were prepared by spray pyrolysis. The influence of the precursor type of phosphorous such as ( NH 4 ) 2 HPO 4 , NH 4 H 2 PO 4 , ( NH 4 ) 3 PO 4 and H 3 PO 4 on the morphology and brightness of particles was investigated. As-prepared particles by spray pyrolysis had spherical shape when ( NH 4 ) 2 HPO 4 and NH 4 H 2 PO 4 were used as the precursor of phosphorous. The precursor type of phosphorous affected the photoluminescence intensity of LaPO 4 :Tb phosphor particles, but not significant. With changing the content of activator(Tb) and excess of phosphorous, the optimal composition giving the highest photoluminescence intensity was found. The spherical morphology of prepared LaPO 4 :Tb particles was completely maintained even after the posttreatment up to 1050 ? C . When the posttreatment temperature was over 1100 ? C , the particles did not have the spherical shape anymore. However, the highest photoluminescence intensity of prepared LaPO 4 :Tb particles was obtained at 1050 ? C . The photoluminescence characteristics of prepared L aPO4 :Tb under the vacuum ultraviolet(VUV) illumination was comparable with that of the commercial Zn 2 V 4 :Mn and (La,Ce)PO 4 :Tb phosphor particles. At the optimal condition, the decay time of prepared spherical LaPO 4 :Tb phosphor particles was about 6.8ms.

Keywords:spray pyrolysis;phosphor;LaPO 4 :Tb;VUV;PDP

[References]

Kim CH, Kwon IE, Park CH, Hwang YJ, Bae HS, Yu BY, Pyun CH, Hong GY, J. Alloys Comp., 311, 33 (2000)
Shionoya S, Yen WM, Phosphor Handbook, 623, CRC Press (1998) (1998)
Justel T, Nikol H, Adv. Mater., 12(7), 527 (2000)
Rao RP, Devine DJ, J. Lumin., 87, 1260 (2000)
van der Kolk E, Dorenbos P, Van Eijk CWE, Bechtel H, Justel T, Nikol H, Ronda CR, Wiechert DU, J. Lumin., 87, 1246 (2000)
Sohn KS, Cho B, Chang H, Park HD, J. Electrochem. Soc., 145, 2353 (1999)
Yoon CK, Kim YJ, Seo JH, Seo MS, Park CB, Chung WJ, Yang JH, Whang KW, SID's, 01, 1332 (2001)
Okumura M, Tamatani M, Matsuda N, Albessard AK, in Proceedings of the 4th International Display Workshop, 629 (1997) (1997)
Kang YC, Lenggoro IW, Park SB, Okuyama K, J. Phys. Chem. Solids, 60, 1855 (1999)
Phosphor Research Society (Japan), Phosphor Handbook, CRC Press, Boca Raton, 199
Kang YC, Roh HS, Bin Park S, Adv. Mater., 12(6), 451 (2000)
Kang KC, Park SB, J. Electrochem. Soc., 147(2), 799 (2000)
Buddhudu S, Kam CH, Ng SL, Lam YL, Ooi BS, Zhou Y, Wong KS, Rambabu U, Mater. Sci. Eng. B, 72, 27 (2000)
Rambabu U, Amalnerkar DP, Kale BB, Buddhudu S, Mater. Chem. Phys., 70(1), 1 (2001)

[Related Articles]

[1] Kim CH, Kwon IE, Park CH, Hwang YJ, Bae HS, Yu BY, Pyun CH, Hong GY, J. Alloys Comp., 311, 33 (2000)

[2] Shionoya S, Yen WM, Phosphor Handbook, 623, CRC Press (1998) (1998)

[3] Justel T, Nikol H, Adv. Mater., 12(7), 527 (2000)

[4] Rao RP, Devine DJ, J. Lumin., 87, 1260 (2000)

[5] van der Kolk E, Dorenbos P, Van Eijk CWE, Bechtel H, Justel T, Nikol H, Ronda CR, Wiechert DU, J. Lumin., 87, 1246 (2000)

[6] Sohn KS, Cho B, Chang H, Park HD, J. Electrochem. Soc., 145, 2353 (1999)

[7] Yoon CK, Kim YJ, Seo JH, Seo MS, Park CB, Chung WJ, Yang JH, Whang KW, SID's, 01, 1332 (2001)

[8] Okumura M, Tamatani M, Matsuda N, Albessard AK, in Proceedings of the 4th International Display Workshop, 629 (1997) (1997)

[9] Kang YC, Lenggoro IW, Park SB, Okuyama K, J. Phys. Chem. Solids, 60, 1855 (1999)

[10] Phosphor Research Society (Japan), Phosphor Handbook, CRC Press, Boca Raton, 199

[11] Kang YC, Roh HS, Bin Park S, Adv. Mater., 12(6), 451 (2000)

[12] Kang KC, Park SB, J. Electrochem. Soc., 147(2), 799 (2000)

[13] Buddhudu S, Kam CH, Ng SL, Lam YL, Ooi BS, Zhou Y, Wong KS, Rambabu U, Mater. Sci. Eng. B, 72, 27 (2000)

[14] Rambabu U, Amalnerkar DP, Kale BB, Buddhudu S, Mater. Chem. Phys., 70(1), 1 (2001)