Enhanced NIR emission in Ce~(3+)/Er~(3+)-doped YAG induced by Bi~(3+) doping

• 作 者: 刘小海 肖思国 向志锋 周碧遥 文晴 阳效良 金湘亮
• 机 构: Faculty of Materials,Optoelectronics and Physics,Institute for Nanophysics and Rare-earth Luminescen
• 出 处: Chinese Optics Letters
• 发表日期: 2013年12期
• 关键词: exciton Er doping adjustment garnet luminescence excitation visible yttrium ther

Ce3+/Er3+/Bi3+triply-doped yttrium aluminum garnet(YAG)is synthesized using co-precipitation method.The Bi3+concentration-dependent near-infrared(NIR)emission behavior is systemically investigated.The NIR emission of Er3+ions at 1531 nm is enhanced threefold by the addition of 7 mol%Bi3+.Bi3+doping results in the formation of exciton in YAG and the variation in the local environment of the doped rare-earth ions.The enhancement in NIR luminescence is ascribed to the combined effects of the sensitization of exciton→Ce3+→Er3+and the Bi3+doping-induced adjustment of the local environment for Ce3+and Er3+ions.

Ce3 + / Er3 + / Bi3 + triply-doped yttrium aluminum garnet (YAG) synthesized synthesized by co-precipitation method. The Bi3 + concentration- dependent near- infrared (NIR) emission behavior is systematically investigated. The NIR emission of Er3 + ions at 1531 nm is enhanced threefold by the addition of 7 mol% Bi3 + .Bi3 + doping results in the formation of exciton in YAG and the variation in the local environment of the doped rare-earth ions. The enhancement in NIR luminescence is ascribed to the combined effects of the sensitization of exciton → Ce3 + → Er3 + and the Bi3 + doping-induced adjustment of the local environment for Ce3 + and Er3 + ions.