人工晶体学报2025，Vol.54Issue(4)：674-683,10.DOI:10.16553/j.cnki.issn1000-985x.2024.0150
Tb3+,Sm3+掺杂的可变色KSrGd(WO4)3荧光粉的制备及发光性能研究
Synthesis and Luminescence Properties of Tb3+,Sm3+Doped Color-Tunable KSrGd(WO4)3 Phosphors
摘要
Abstract
A series of Tb3+and/or Sm3+doped KSrGd(WO4)3 phosphors were prepared by the high temperature solid-state reaction.The structure,morphology,luminescence properties and energy transfer mechanisms were also investigated.Under the excitation of 260 and 405 nm,KSrGd(WO4)3∶Tb3+and KSrGd(WO4)3∶Sm3+phosphors give rise to an intense green and orange red emission,respectively.And the optimal concentration of Tb3+and Sm3+in KSrGd(WO4)3 phosphors are 0.7 and 0.08,separately.After that,the luminescence intensity gradually decreases with increasing of doping concentration,due to the concentration quenching effect.In KSrGd(WO4)3∶xTb3+and KSrGd(WO4)3∶ySm3+samples,the types of energy transfer between activator ions are dipole-quadrupole and dipole-dipole interaction,respectively.When Sm3+were co-doped in KSrGd(WO4)3∶Tb3+phosphors,the characteristic emissions of both Tb3+and Sm3+can be observed.Furthermore,as increasing concentration of Sm3+,the emission intensities of Tb3+decreases,while those of Sm3+were enhanced.The experimental results show that there are not only energy transfer from WO42-to Tb3+and Sm3+,but also energy transfer from Tb3+to Sm3+,in Tb3+and/or Sm3+doped KSrGd(WO4)3 phosphors.The fluorescence lifetime analysis of Tb3+further confirmed the energy transfer from Tb3+to Sm3+.On the basis of CIE calculation,the color of phosphor can be adjusted by fixing the doping concentration of Tb3+and changing the concentration of Sm3+without changing the excitation wavelength.These above results confirm that the synthesized KSrGd(WO4)3∶Tb3+,Sm3+phosphors may have potential application prospects for white light-emitting diodeds.关键词
KSrGd(WO4)3/荧光粉/高温固相法/浓度猝灭效应/能量传递Key words
KSrGd(WO4)3/phosphor/high temperature solid-state reaction/concentration quenching effect/energy transfer分类
数理科学引用本文复制引用
王元娥,王晶,葛彩霞,傅国娟,宋明君..Tb3+,Sm3+掺杂的可变色KSrGd(WO4)3荧光粉的制备及发光性能研究[J].人工晶体学报,2025,54(4):674-683,10.基金项目
潍坊市科技发展计划(2023GX011) （2023GX011）
