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J. Korean Ceram. Soc. > Volume 38(9); 2001 > Article
Journal of the Korean Ceramic Society 2001;38(9): 794.
Sol-gel법에 의한 $Y_{2-x}SiO_{5}:Ce_{x}^{3+}$ 형광체 제조와 그 특성
김상문, 강경태1, 김태옥1
LG전자(주) Display사업본부 Display Device 연구소
1부산대학교 무기재료공학과
Properties of $Y_{2-x}SiO_{5}:Ce_{x}^{3+}$ Phosphor Powder Prepared by Sol-gel Process
Sang-Mun Kim, Kyoung-Tae Kang1, Tae-Ok Kim1
Display Device Research Lab. LG Electronics Inc.
1Department of Inorganic Material Science and Engineering, Pusan National University
$Y_{2-x}SiO_5:Ce_x^{3+}$(x=0.002∼0.04) phosphors were prepared by sol-gel process, amorphous crystal phase was observed in calcining dry gel at 800$^{circ}$C, but pure $X_2$ type of type $Y_2SiO_5$ phase appeared from heat treatment above 1000$^{circ}$C. Light absorption of tye $Y_2SiO_5$ host lattice occurred at 230∼360nm, and light absorption of the $Y_{2-x}SiO_5:Ce_x^{3+}$ phosphors was observed at 300∼400nm in adding $Ce^{3+}$. $Y_{2-x}SiO_5:Ce_x^{3+}$ phosphors showed maximum emission shoulder at 436nm. Maximum CL intensities of $Y_{2-x}SiO_5:Ce_x^{3+}$ were observed in adding 0.025 $Ce^{3+}$ and the phosphor showed x=0.161, y=0.124 in color coordinate of CIE1931.
Key words: $Y_{2-x}SiO_{5}:Ce_{x}^{3+}$, Phosphor, Sol-gel process, Cathodoluminescence, Emission
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