荧光粉
光致发光
发光
材料科学
兴奋剂
分析化学(期刊)
光致发光激发
发光二极管
离子
远红色
扫描电子显微镜
光电子学
化学
红灯
复合材料
有机化学
色谱法
植物
生物
作者
Xinyue Liu,Yamin Xu,Kang Cheng,Juling Long,Weichao Huang,Chaoyong Deng
出处
期刊:Luminescence
[Wiley]
日期:2023-04-25
卷期号:38 (6): 692-701
被引量:4
摘要
A novel far-red emitting phosphor Sr2 MgWO6 : Mn4+ was fabricated using high-temperature solid-state reaction. X-ray diffraction patterns, scanning electron microscopy images, and photoluminescence excitation and photoluminescence spectra for this phosphor were analyzed in detail. The analysis revealed that its emission ranged from 600 to 800 nm and peaked at 699 nm, which was attributed to the 2 Eg →4 A2g transition of Mn4+ under 314 nm excitation. Moreover, we introduced rare-earth Yb3+ ions into the Sr2 MgWO6 :Mn4+ to improve its far-red emitting intensity. The photoluminescence (PL) intensity of the Yb3+ co-doped phosphor was three times higher than that of the single-doped phosphor. Therefore charge compensation is an efficient approach to improving PL intensity. The phosphor emitted a far-red light that resembled the pigments essential for plant growth in terms of the absorption spectrum. Therefore, the obtained phosphor, Sr2 MgWO6 :0.006Mn4+ ,0.2Yb3+ , had the potential to be a new type of far-red luminescent powder for indoor plant growth LEDs.
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