CAJ | 학술논문

采用共沉淀法合成了CaWO4：Eu3＋和SrWO4：Eu3＋荧光粉体。利用荧光光谱仪测定了样品的光谱特性，结果表明，其主要激发波长为393nm和464nm，以393nm为激发波长说明样品能被近紫外光有效激发，并在614nm产生红色荧光；采用XRD分析其物相及晶体结构，发现生成的发光材料的晶型为四方晶系，晶粒均在纳米级，且在焙烧温度为400℃时生成的样品不含杂质，晶粒尺寸较小；扫描电镜显示400℃焙烧温度下生成的发光材料的样品颗粒大小在100～300nm之间，焙烧温度升高时，SrWO4：Eu3＋的抗烧结能力弱，样品出现团聚，生成的样品颗粒变大。
채용공침정법합성료CaWO4：Eu3＋화SrWO4：Eu3＋형광분체。이용형광광보의측정료양품적광보특성，결과표명，기주요격발파장위393nm화464nm，이393nm위격발파장설명양품능피근자외광유효격발，병재614nm산생홍색형광；채용XRD분석기물상급정체결구，발현생성적발광재료적정형위사방정계，정립균재납미급，차재배소온도위400℃시생성적양품불함잡질，정립척촌교소；소묘전경현시400℃배소온도하생성적발광재료적양품과립대소재100～300nm지간，배소온도승고시，SrWO4：Eu3＋적항소결능력약，양품출현단취，생성적양품과립변대。
Fluorescent powder CaWO4 :Eu3+ and SrWO4 :Eu3+ was prepared by co-precipitati-on method .Spectral properties of samples was measured using the fluorescence spectrome-ter .It shows that ,the main excitation wavelength is 393 nm and 464 nm and red fluorescence in 614 nm can be effectively stimulated with 393 nm as the excitation wavelength ;XRD anal-ysis confirmed that the luminescent material exhibited a tetragonal crystal structure ,and the crystallite sizes are in nanometers .When the calcination temperature is 400 ℃ ,the lumines-cent materials are free of impurities ,and the crystallite sizes are smaller than calcinated at 500 ℃ or 600 ℃ ;SEM observes that the sample′s particle size of the luminescent material is between 100~300 nm at 400 ℃ .With rising of the calcination temperature ,the anti sinte-ring ability of SrWO4 :Eu3+ was weak ,its particles became larger because of reunion .