| 학회 |
한국재료학회 |
| 학술대회 |
2015년 봄 (05/14 ~ 05/15, 구미코) |
| 권호 |
21권 1호 |
| 발표분야 |
F. 광기능/디스플레이 재료 |
| 제목 |
Preparation of spherical-shaped Y3Al5O12:Ce3+ phosphors by one-pot synthetic method |
| 초록 |
Recently, there have been the studies that suggest the use of phosphors with nano-sized and spherical-shaped particles. The particles can significantly reduce the amount of light scattering at surface of the phosphor particles, improve the efficiency and increase the packing density. In this study, one-pot synthesis of Ce-doped yttrium aluminum garnet (YAG:Ce3+) phosphor based on a hydrothermal reaction was designed. The reaction conditions to obtain spherical shape of particles were optimized. The solvent and temperature in hydrolysis stage greatly influence the particle shape. The optimum solvent composition of alcohol to water was the ratio of 5:1. A single-phased YAG:Ce3+ phosphors were obtained with firing the precursor particles at 1000℃. The obtained YAG:Ce3+ phosphors exhibited typical excitation and emission spectrum. Their photoluminescence properties were compared to those by conventional solid-state method. The optimum Ce3+ content of the YAG:Ce3+ phosphor prepared by one-pot synthetic method was estimated to 3 mol %, compared to 2 mol% by solid-state method. |
| 저자 |
박성수1, 김연2, 석동일2, 최성호3, 심광보2, 정하균3
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| 소속 |
1고려대, 2한양대, 3한국화학(연) |
| 키워드 |
YAG:Ce3+ (Y3A5O12:Ce3+); Hydrothermal reaction; spherical particle<P> </P>
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| E-Mail |
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