掺杂Eu^(3+)或Tb^(3+)的(Gd,Lu)_2O_3粉体的发光性能  

LUMINESCENCE PROPERTIES OF Eu^(3+) OR Tb^3+) DOPED (Gd, Lu)_2O_3 POWDERS

作　　者：吴云涛 秦来顺[1] 杨怡昕[1] 张烨[1] 史宏声[1] 舒康颖[1] 

机构地区：[1]中国计量学院材料科学与工程学院,杭州310018

出　　处：《硅酸盐学报》2009年第8期1351-1355,共5页Journal of The Chinese Ceramic Society

基　　金：国家自然科学基金50702054;中国计量学院引进人才科研启动计划资助项目

摘　　要：采用高温固相法在空气中合成了(Gd,Lu)2O3,(Gd,Lu)2O3:Eu3+和(Gd,Lu)2O3:Tb3+系粉体。研究了二元系中Lu2O3的摩尔分数对抑制Gd2O3高温相变、粉体的发光性质和光谱性质的影响。结果表明:在(Gd,Lu)2O3系粉体中,当Lu2O3的摩尔分数(下同)大于40%时,能在煅烧温度不低于1700℃情况下,抑制Gd2O3的相变得到利于制备透明陶瓷的立方相结构。而且随着Lu3+离子的浓度增加,先后观察到红移和蓝移现象;在(Gd,Lu)2O3:Eu3+系粉体中,粉体的发光强度随着Lu3+掺杂量增加而减小,Eu3+的最佳掺杂量为7%;在(Gd,Lu)2O3:Tb3+系粉体中,Tb3+离子的最佳掺量为1%。Three series of powders were prepared by high temperature solid-state method, namely （Gd, Lu）2O3, （Gd, Lu）2O3：Eu^3＋ and （Gd, Lu）2O3 ：Tb^3＋. The influences of mole fraction of Lu2O3 in binary system elements on the phase transformation of Gd2O3, and the optical properties and spectra characteristic of （Gd, Lu）2O3：Eu^3＋/Tb^3＋ powders were investigated. The results indicate that in the case of （Gd, Lu）2O3 series powders, when the mole fraction （the same below） of Lu2O3 is more than 40% and the calcination temperature is not less than 1 700℃, the phase transformation of Gd2O3 can be prevented, which is favorable for fabricating transparent ceramic, with cubic phase. Furthermore, with the increase of the doping mole fraction of Lu203, there is a red shift phenomenon followed by a blue shift phenomenon in the luminescence of the powders; in the case of （Gd, Lu）2Oa：Eu3＋ series powders, the luminescence intensity of powders decreases with the increase of Lu^3＋ doping content, and the best doping mole fraction of Eu^3＋ is 7%; in the case of （Gd, Lu）2O3：Tb^3＋ series powders, the best doping mole fraction of Tb^3＋ is 1%.

关 键 词：氧化钆镥 铕掺杂 铽掺杂 粉体 发光性能 

分 类 号：O482.3[理学—固体物理]