荧光粉
显色指数
发光二极管
发光
半最大全宽
材料科学
色温
光电子学
二极管
分析化学(期刊)
光学
化学
物理
色谱法
作者
Huifang Yang,Panlai Li,Zejun Ye,Xiaoxue Huo,Yu Wang,Qian Wu,Zhijun Wang
出处
期刊:Dalton Transactions
[The Royal Society of Chemistry]
日期:2022-10-21
卷期号:51 (43): 16628-16638
摘要
In this work, a novel yellow-emitting phosphor SrLa2Sc2O7(SLSO):Bi3+ was synthesized by a high temperature solid-state method, with a wide coverage from 400 nm to 800 nm under near-ultraviolet (NUV) excitation and the full width at half maximum (FWHM) of up to 180 nm. The phosphor emits bright yellow light, which is observed using optical microscopy. Alkali metal (Li+, Na+, K+) ions were used as charge compensators to enhance the luminescence intensities of SrLa2Sc2O7:Bi3+. Finally, the yellow SrLa2Sc2O7:Bi3+,Li+ and blue Sr5(PO4)3Cl:Eu2+ phosphors were homogeneously mixed with silica gel and coated on a NUV light emitting diode (LED) at 370 nm to obtain white LEDs with a high color rendering index (Ra = 91.3), a low correlated color temperature (CCT = 4879 K) and color coordinates (0.34, 0.30). This work can provide a good candidate for making white LEDs.
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