The Luminescence Properties of YAG:<TEX>$Tb^{3+}$</TEX> Phosphor Prepared by Hydrothermal Synthesis

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J. Korean Ceram. Soc. > Volume 37(8); 2000 > Article

Journal of the Korean Ceramic Society 2000;37(8): 745.

YAG:$Tb^{3+}$ 형광체 분말의 수열합성과 발광 특성

김상문, 지성훈¹, 구자인¹, 김태옥¹

LG전자(주) Display사업본부 Display Device연구소
¹부산대학교 공과대학 무기재료공학과

The Luminescence Properties of YAG:$Tb^{3+}$ Phosphor Prepared by Hydrothermal Synthesis

ABSTRACT

YAG:Tb3+ as green phosphor were studied for the development of low voltage FED phosphor prepared by hydrothermal synthesis. We changed the concentration of luminescence center ion Tb3+ in hydrothermal reaction of which conditions were at 8M NH4OH as mineralizer, at 35$0^{circ}C$ for 12hrs. As results, we could finally get the YAG:Tb3+ (Y3-xTbxAl5O12) powder of which particle size was about 0.2~1.0${mu}{textrm}{m}$. The excitation spectra and the green emitted spectra of YAG:Tb3+ phosphor powder were observed. When we doped 0.25 mol Tb to YAG, we could observe the maximum cathodoluminescence from YAG:Tb3+ phosphor and the chromaticity coordinate of the phosphor was shown x=0.35, y=0.56 in CIE1931 diagram.

Key words: Phosphor, YAG:$Tb^{3+}$(${Y_{3-x}}{Tb_x}{Al_5}{O_{12}}$), FED, Hydrothermal synthesis