CAJ | 학술논문

采用高温固相法制备了Ca<,4>Y<,6>O(SiO<,4>)<,6>:Dy<'3+>荧光材料,通过样品的XRD谱证明了Ca<,4>Y<,6>O(SiO<,4>)<,6>:Dy<'3+>荧光材料是纯相的结构材料,通过发射光谱和激发光谱等发光特性的研究发现该荧光粉材料有多个发射峰,分别位于480 nm和573 nm处.监测蓝峰(480 nm)和黄峰(573 nm),测得材料的激发谱均为多锐峰(位于293,323,348,363,386,424,452 nm),均属于Dy<'3+>的特征吸收峰,其中以348 nm的激发峰最强.探讨了Dy<'3+>的掺杂量对样品黄蓝峰发射强度比(I<,Y>/I<,B>)、发光色坐标及色温的影响.分析了Dy<'3+>的浓度对荧光粉发光的影响及其浓度猝灭机理.
채용고온고상법제비료Ca<,4>Y<,6>O(SiO<,4>)<,6>:Dy<'3+>형광재료,통과양품적XRD보증명료Ca<,4>Y<,6>O(SiO<,4>)<,6>:Dy<'3+>형광재료시순상적결구재료,통과발사광보화격발광보등발광특성적연구발현해형광분재료유다개발사봉,분별위우480 nm화573 nm처.감측람봉(480 nm)화황봉(573 nm),측득재료적격발보균위다예봉(위우293,323,348,363,386,424,452 nm),균속우Dy<'3+>적특정흡수봉,기중이348 nm적격발봉최강.탐토료Dy<'3+>적참잡량대양품황람봉발사강도비(I<,Y>/I<,B>)、발광색좌표급색온적영향.분석료Dy<'3+>적농도대형광분발광적영향급기농도졸멸궤리.
The Ca<,4>Y<,6>O(SiO<,4>)<,6>:DY<'3+> phosphor was synthesized by high temperature solid state reaction, and the luminescent properties were investigated. The XRD patterns indicated that the phosphor of Ca<,4>Y<,6>O(SiO<,4>)<,6>:DY<'3+> was pure crystalline phase. The study on the luminescent properties showed that the phosphor exhibits two emission bands centering at 480 nm and 573 nm. The excitation spectra for blue emission (480 nm) and yellow emission (573nm) both have several sharp peaks, locating at 293,323,348,363,386,424,452 nm, which are assigned to the typical transitions of Dy<'3+>. The strongest peak appears at 348 nm. The influence of the doped concentration of Dy<'3+> on the ratio of yellow to blue emission intensity (I<,Y>/I<,B), with the emission color coordinates and color temperature of phosphor Ca<,4>Y<,6>O(SiO<,4>)<,6>:DY<'3+> were studied. The effect of Dy<,3+> concentration on the luminescence and the quenching mechanism according to the Dexter theory were also analyzed.