CAJ | 학술논문

以柠檬酸为络合剂采用溶胶-凝胶法制备了（Y1-xTmx）2Zr2O7（x=0.005，0.01，0.03，0.05）荧光粉.采用X-射线衍射分析仪（XRD）、扫描电子显微镜（SEM）和荧光光谱仪分别检测了Y2Zr2O7∶Tm3+的晶体结构、颗粒形貌以及样品的荧光光谱.XRD图谱表明，所得到的产物Y2Zr2O7∶Tm3+为单一相的萤石结构，而且Tm3+的掺杂并没有改变其晶体结构.荧光光谱的测试表明，在359 nm波长的紫外光激发下，1000℃下烧结的（Y1-xTmx）2Zr2O7（x=0.01）样品的发光性能最好，发射峰对应于Tm3+的1D2→3F4跃迁和1G4→3H6跃迁，并对其发光机理进行了探讨.样品在454 nm处的发光强度随Tm3+离子掺杂浓度的增加先升高后降低，即出现了浓度猝灭的现象，当Tm3+掺杂浓度摩尔百分比为1%时，样品的发光强度达到最大.
이저몽산위락합제채용용효-응효법제비료（Y1-xTmx）2Zr2O7（x=0.005，0.01，0.03，0.05）형광분.채용X-사선연사분석의（XRD）、소묘전자현미경（SEM）화형광광보의분별검측료Y2Zr2O7∶Tm3+적정체결구、과립형모이급양품적형광광보.XRD도보표명，소득도적산물Y2Zr2O7∶Tm3+위단일상적형석결구，이차Tm3+적참잡병몰유개변기정체결구.형광광보적측시표명，재359 nm파장적자외광격발하，1000℃하소결적（Y1-xTmx）2Zr2O7（x=0.01）양품적발광성능최호，발사봉대응우Tm3+적1D2→3F4약천화1G4→3H6약천，병대기발광궤리진행료탐토.양품재454 nm처적발광강도수Tm3+리자참잡농도적증가선승고후강저，즉출현료농도졸멸적현상，당Tm3+참잡농도마이백분비위1%시，양품적발광강도체도최대.
(Y1-xTmx)2Zr2O7(x= 0.005,0.01,0.03,0.05) phosphors are synthesized by sol-gel method using citric acid as complexing agent. The structure, morphology and luminescence spectra of the samples are investigated by X-ray diffraction (XRD), SEM and fluorescence spectrophotometer, respectively. The XRD patterns indicate that the structures of samples are characterized by single-phased fluorite structure. The crystal structure has not been changed by the invasion of Tm3+. The best luminescence performance is obtained for the (Y1-xTmx)2Zr2O7(x=0.01) by sintering at 1 000 ℃ under the excitation wavelength at 359 nm. The emissions of 11D2→3F4 and 1G4→3H6 transitions of Tm3+are observed by studying the mechanisms of the two emissions. The emission intensity of 11D2→3F4 transition increases with the adding of Tm3 +-doping concentrations, then reaches the maximum when Tm3+ concentration is at 1 mol % and decreases with increasing Tm3+-doping concentrations, which indicates that the concentration quenching is active when x>0.01.