Abstract
In this work, the novel, to the best of our knowledge, blue-cyan Y2Mg0.8Sr0.2Al4SiO12:Eu2+ (YM0.8S0.2AS:Eu2+) phosphors were synthesized by the solid-state method. At 150°C, the emission intensity of Y2Mg0.8Sr0.2Al4SiO12:0.005Eu2+ can retain 96.38% of the relative intensity, which means that this phosphor shows high thermal stability. A white light-emitting diode (LED) device is fabricated by combining a 370 nm near ultraviolet LED chip and commercial phosphors (green, (Ba,Sr)2SiO4:Eu; red, CaSiAlN3:Eu). The white LED has an excellent property with the correlated color temperature CCT=5236K and superhigh color rendering index Ra=96.1, which indicates the potential application in white LED fields.
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