（Y，Zn，Sr）_3（P，VO_4）_2∶Dy^（3＋）的合成与发光性质的研究

SYNTHESIS AND LUMINESCENCE PROPERTIES OF(Y,Zn,Sr)_3 (P,VO_4)_2:Dy￣(3+)

用固态反应合成了（Ｙ，Ｚｎ，Ｓｒ）３（Ｐ，ＶＯ４）２∶Ｄｙ３＋荧光材料。经ＸＲＤ测定属于单斜晶系，晶胞参数α＝７．５５６Ａ，ｂ＝８．５１０Ａ，ｃ＝５．０５８Ａ，β＝９５．３２°。基质和Ｄｙ３＋的发光效率以及（Ｙ，Ｚｎ，Ｓｒ）３（ＰｘＶ１－ｘＯ４）２∶Ｄｙ３＋中Ｄｙ３＋的发光强度和蓝黄比（Ｂ／Ｙ）均与ｘ有关，样品中Ｂ／Ｙ比均大于１，在紫外光照射下发出近白光。

By Solid state reaction method.(Y,Zn,Sr)3(P, VO4)2:Dy3+ phosphor was prepared.Its crystal structure has been determined by XRD. The crystal belonged to monoclinic with cell Paramenters a=7.556A,b 8.510 A,c=5.058 A,β=95.32°he luminescence efficients of the matrix and Dy3+, the blue-to-yellow ratio of Dy3+ in(Y,Zn,Sr)3(PxV1-xO4)2:Dy3+were related to x,the B/Y>1 in these samples.Near white emission under U.V.irradiation were observed.