![]() ![]() ![]() ![]() The resulting ceramic showed a high quantum yield of up to 78%, which is comparable to conventional ceramic phosphors. To vary the color coordination the heat-treatment conditions and the thickness of the glass-ceramic were adjusted. When it was mounted on top of a 400 nm UV-LED, it demonstrated high color conversion efficiency and practical feasibility as an UV-LED color converter. With heat treatment the glass-ceramic also showed highly increased emission intensity, and the color coordinate of the glass-ceramic shifted to yellow. When Eu 2+ formed within the glass matrix, the obtained glass showed cyan emission under 400 nm excitation, but its emission peak drastically shifted to greenish yellow upon heat treatment. SiO 2-Na 2O-Al 2O 3-LaF 3 glass-ceramics doped with Eu 2+ were synthesized as an efficient inorganic color converter for 400 nm UV-LED. ![]()
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