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J. Korean Ceram. Soc. > Volume 42(6); 2005 > Article
Journal of the Korean Ceramic Society 2005;42(6): 391.
doi: https://doi.org/10.4191/kcers.2005.42.6.391
조합화학과 QSAR를 이용한 SrO-B2O3-P2O5 3원계 청색형광체 개발
유정곤, 백종호, 조상호, 손기선
순천대학교 신소재공학부
Screening of SrO-B2O3-P2O5 Ternary System by Combinatorial Chemistry and QSAR
Jeong-Gon Yoo, Jong-Ho Back, Sang-Ho Cho, Kee-Sun Sohn
Department of Materials Science and Metallurgical Engineering, Sunchon National University
It is known that $BaMgAl_{10}O_{17}:Eu^{2+}(BAM)$ phosphors currently used have a serious thermal degradation problem. We screened $SrO-B_2O_3-P_2O_5$ system by a solution combinatorial chemistry technique in an attempt to search for a thermally stable blue phosphor for PDPs. A Quantitative Structure Activity Relationship (QSAR) was also obtained using an artificial neural network trained by the result fiom the combinatorial screening. As a result, we proposed a promising composition range in the $SrO-B_2O_3-P_2O_5$ ternary library. These compositions crystallized into a single major phase, $Sr_6BP_5O_{20}:Eu^{2+}$. The structure of $Sr_6BP_5O_{20}:Eu^{2+}$ was clearly determined by ab initio calculation. The luminescent efficiency of $Sr_6BP_5O_{20}:Eu^{2+}$ was 2.8 times of BAM at Vacuum Ultra Violet (VUV) excitation. The thermal stability was also good but the CIE color chromaticity was slightly poor.
Key words: PDP, Phosphor, Combinatorial chemistry, QSAR
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