荧光粉
色度
色温
材料科学
量子效率
发光
磷灰石
显色指数
分析化学(期刊)
矿物学
光电子学
光学
化学
物理
色谱法
作者
Yunhua Wu,Weiqiang Li,Yifan Zheng,Yiqin Xu,Dawei Wen,Maxim S. Мolokeev,Zaifa Pan
摘要
Abstract During pursuing high color rendering index for full‐color‐emitting phosphor, low quantum efficiency (QE) is usually accompanying. We intend to elevate the luminescence efficiency when realizing a solar‐like spectra distribution, by constructing apatite structure oxynitride, inheriting high covalence and rigidity from oxynitride, and suitable multiple cation sites from oxyapatite compounds. Full‐color‐emitting apatite structure oxynitride phosphor (Mg,Y) 5 Si 3 (O,N) 13 :Ce 3+ ,Mn 2+ has been prepared, and the crystal sites’ occupancies of activators in this host were favorable for white emission. (Mg,Y) 5 Si 3 (O,N) 13 :Ce 3+ ,Mn 2+ phosphor shows whole visible light with emission wavelength ranging from 370 to 750 nm, matching the spectra of sunlight quite well. The fabricated white light‐emitting diode lamp demonstrated the distinctive overall performance of QE and chromaticity properties ( R a and R 9 ). Furthermore, correlated color temperature is tunable from cool nature to warm white. The obtained lamp possesses the feature of less blue light hazard and high saturation of red degree, compared with the commercial YAG‐based lamp.
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