Abstract
New yellow phosphors, Eu2+ and Zn2+ co-activated Sr3Al2O5Cl2, were prepared by solid state reaction technique, and their photoluminescent properties were investigated. Sr2.6Al2O5Cl2:0.20Eu2+, 0.20Zn2+ shows broadened the excitation band in near UV range and intense yellow emission under 400 nm light excitation by introducing into Zn2+. The single yellow light-emitting diodes were fabricated by combining InGaN-chips with Sr2.8Al2O5Cl2: 0.20Eu2+ and Sr2.6Al2O5Cl2:0.20Eu2+, 0.20Zn2+, intense yellow light can be observed by naked eyes from the yellow LEDs. Hence, the phosphor Sr2.6Al2O5Cl2:0.20Eu2+, 0.20Zn2+ may be applied in fabrication of phosphor-converted light-emitting diodes.
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