摘要
本文报道了不同组成的YP_xV_(1-x)O_4(0≤x≤1):Dy^(3+)的合成和结构。YP_xV_(1-x)O_4(0≤x≤1)为四方晶系,晶胞参数随x的增大呈线性减小。基质的Stokes位移随x的增大逐渐变大,而激发光谱峰值则向短波方向移动。在YP_xV_(1-x)O_4:0.006Dy^(3+)体系中,x>0.4时出现的基质发射是由P0_4^(3-)引起的。基质及Dy^(3+)的发光效率和Dy^(3+)的发光强度的黄蓝比均与x有关。同时探讨了Bi^(3+)和温度对Dy^(3+)的发光强度的影响。
The crystals of YP_xV_(1-x)O_4 (0≤x≤1) are tetragonal. With increase of x, their lattice parameters linearly decrease, the Stokes shifts increase and the peak of excitation spectra shifts to shorter wavelenghth. The luminescence effieiencies of the matrix and Dy^(3+) and the yellow-to-blue intensity ratio of Dy^(3+) are related to x. For compound YP_xV_(1-x)O_4 0. 006Dy^(3+) the matrix emission is caused by PO_4^(3-), when x>0. 4. The influences of Bi^(3+) and temperature On the emission intensity of Dy^(3+) were also investigated.
出处
《应用化学》
CAS
CSCD
北大核心
1993年第6期27-30,共4页
Chinese Journal of Applied Chemistry
基金
国家自然科学基金
关键词
钒磷酸钇
镝
铋
光谱
合成
yttrium phosphate-vanadate ,dysprosium, bismuth, luminescence ,synthesis
