人工晶体学报2024，Vol.53Issue(1)：107-114,8.
GdPO4∶Tb3+荧光粉的制备及发光性能研究
Preparation and Luminescent Properties of GdPO4∶Tb3+Phosphors
摘要
Abstract
Rare earth Tb3+doped gadolinium phosphate(GdPO4)green phosphor is a potential phosphor for white LED,while the preparation by conventional hydrothermal method has some problems,such as long reaction time and low doping amount of Tb3+.A series of Gd1-r PO4∶xTb3+(x=0,1％,5％,11％,13％,15％,17％,19％)samples were prepared by hydrothermal method combined with high temperature sintering.The phase structure,morphology,elemental composition,optical absorption and luminescence properties of samples were characterized by X-ray diffractometer(XRD),scanning electron microscope(SEM)-energy spectrometer(EDS),infrared spectrometer(FT-IR)and fluorescence spectrophotometer.The results show that,all the synthesized samples are pure phase of GdPO4 belonging to monoclinic monazite structure,and the Tb3+are uniformly distributed in GdPO4 matrix and cause lattice shrinkage.Under 274 nm photoexcitation,GdPO4∶Tb3+phosphors have the strongest emission peak at 545 nm,which belongs to 5 D4 →7 F5 transition of Tb3+.The fluorescence quenching concentration of Tb3+was determined to be 15％(molar ratio),and this sample(GdPO4∶15％Tb3+)exhibits excellent green light emission and good thermal stability.关键词
磷酸钆/Tb3+掺杂/水热法/高温烧结/发光性能/绿色荧光粉Key words
gadolinium phosphate/Tb3+doping/hydrothermal method/high temperature sintering/luminescent property/green phosphor分类
化学化工引用本文复制引用
孟晓燕,廖云,张丽蓉,张雨蒙,吴丽丹,杨流赛..GdPO4∶Tb3+荧光粉的制备及发光性能研究[J].人工晶体学报,2024,53(1):107-114,8.基金项目
江西省教育厅科技项目(GJJ211714) （GJJ211714）
江西省自然科学基金(20212BAB213029) （20212BAB213029）
上饶市科技厅项目(2022YF022) （2022YF022）
