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Color-Tunable Emission via Site-Selective Occupation of Eu2+ Activators in Silicate Phosphors
Laser & Photonics Reviews ( IF 9.8 ) Pub Date : 2024-09-11 , DOI: 10.1002/lpor.202400982
Yuzhu Yang 1 , Peng Zhang 1, 2 , Xuan Miao 1 , Zenggang Lin 1 , Sixia Li 1 , Weisheng Liu 1
Affiliation  

Site-selective occupation generated by ion doping into crystal lattices is an effective way to explore new matter and regulate luminescent properties. Herein, equiv. M2+ (Ca, Sr, Ba) is partially replaced each other to formulate multiple doped sites in Li2MSiO4: Eu2+ (LMSO: Eu2+). As the luminescence center, Eu2+ selectively occupies different sites to regulate luminescent color in the visible spectrum ranging from blue to orange, and ultimately functionality improvement. The Huang-Rhys factor is quite small and the resulting phosphors display an ultrahigh thermal stability for optical thermometry. Besides, utilizing synthesized phosphors combined with the InGaN chip generates high-quality full-spectrum white light. Under X-ray irradiation, LMSO: Eu2+ (M = Ca, Sr, Ba) exhibits great X-ray imaging ability, the detection limit of X-ray reaches 0.18, 0.075, and 0.12 µGy s−1. This work presents great potentiality of synthesized phosphors in the fields of solid-state lighting and X-ray imaging.

中文翻译:


通过在硅酸盐荧光粉中位点选择性占据 Eu2+ 活化剂进行颜色可调发射



离子掺杂到晶格中产生的位点选择性占据是探索新物质和调节发光特性的有效方法。在此,等效 M 2+ (Ca, Sr, Ba) 部分相互取代,以在 Li 2 MSiO 4 2+ : Eu (LMSO: Eu) 中形成多个掺杂位点 2+ 。作为发光中心,Eu 2+ 选择性地占据不同的位点,以调节从蓝色到橙色的可见光谱中的发光颜色,并最终改善功能。Huang-Rhys 因子非常小,所得荧光粉在光学测温中显示出超高的热稳定性。此外,利用合成荧光粉与 InGaN 芯片相结合,可产生高质量的全光谱白光。在 X 射线照射下,LMSO:Eu 2+ (M = Ca, Sr, Ba) 表现出很好的 X 射线成像能力,X 射线的检出限达到 0.18、0.075 和 0.12 μGy s −1 。这项工作展示了合成荧光粉在固态照明和 X 射线成像领域的巨大潜力。
更新日期:2024-09-11
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