钨酸盐
材料科学
荧光粉
发光
结构精修
钇
煅烧
兴奋剂
分析化学(期刊)
离子
热稳定性
核化学
晶体结构
结晶学
化学工程
氧化物
化学
光电子学
有机化学
工程类
生物化学
色谱法
冶金
催化作用
作者
Zhan Junwei,Siyan Peng,Yujun Zhu,Zhenghui Zhu,Jianlei Liu,Huizhen Peng,Xiaoyan Meng,Liusai Yang
标识
DOI:10.1016/j.ceramint.2023.11.233
摘要
Well-defined NaY(WO4)2:Tb3+ nanoflowers were prepared through the controllable structural transition of hydroxyl sodium yttrium tungstate precursor, which exhibit a fascinating luminescent property as activated by Tb3+ dopant. NaY(WO4)2:Tb3+ nanoflowers were systematically characterized with a series of tests including XRD, SEM, FT-IR, TG-DTA, UV–Vis, and PL. XRD analyses indicate that NaY(WO4)2:Tb3+ crystalizes in the scheelite structure with broadened diffraction peaks and expanded cell volume with increasing Tb3+ content as revealed by Rietveld refinement. FT-IR and TG-DTA results show that NaY(WO4)2:Tb3+ is formed via the structural transition of hydroxyl sodium yttrium tungstate at calcination temperature above 600 °C. UV–Vis test discloses the bandgap red-shift of NaY(WO4)2 via doping Tb3+ ions. Noticeably, PL measurement discloses the green luminescence of NaY(WO4)2:Tb3+ attributable to 5D4→7F5 transition with the optimal Tb3+ doping content of 13 mol%, which manifests the effective energy transfer from WO42− groups to Tb3+ ions and reveals relatively good thermal stability. Furthermore, the tunable color emission from blue to green to yellowish green can be achieved in flower-like NaY(WO4)2:Tb3+ phosphors by controlling the doping content of Tb3+ ions, which may provide promising application in the field of multicolor lighting and displays.
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