| 학회 | 한국재료학회 |
| 학술대회 | 2009년 가을 (11/05 ~ 11/06, 포항공과대학교) |
| 권호 | 15권 2호 |
| 발표분야 | B. Nanomaterilas Technology(나노소재 기술) |
| 제목 | Advanced Materials of CaAl12O19:Mn4+ Red Phosphor for White Light Emitting Diodes by Aerosol Flame Deposition |
| 초록 | CaAl12O19:Mn4+ red phosphor was synthesized by Aerosol Flame Deposition and solid state reaction, and the basic luminescence characteristics were compared. The emission intensity of the CaAl12O19:Mn4+ powders with various Mn doping concentration exhibited the maximum intensity at 0.12mol% Mn. The effect of an activator Mg2+ on the photoluminescence intensity of CaAl12O19:Mn4+ phosphor was also studied. The 0.15mol% Mg2+ ions doped sample exhibited maximum PL intensity and approximately 2 times higher than un-doped sample. Although the absolute intensity of photoluminescence was slightly lower for the phosphor synthesized by Aerosol Flame Deposition, both phosphor powders exhibited the identical lifetime in transient decay of photoluminescence, suggesting that the luminescence quantum efficiencies are identical and the difference in absolute photoluminescence intensity is originated from particle size effect. This work was supported by the Seoul Research & Business Development Program (Grant No.10583) |
| 저자 | 조성학, 윤용섭, 신동욱 |
| 소속 | 한양대 |
| 키워드 | LED; AFD; phosphor |
