中文摘要：

采用高温固相法合成了一系列的（Y0.95Ln0.01 Ce0.04）3Al5O12（简称YAG：Ce，Ln），系统地研究了此体系中的Ln^3＋对Ce^3＋的发光强度的影响．结果表明，在YAG：Ce的体系中，La^3＋，Gd^3＋，Lu^3＋等光学透明离子的少量掺杂对Ce^3＋的发光强度的影响不大；掺入少量的Pr^3＋，Sm^3＋，Tb^3＋，Dy^3＋，Ho^3＋，Er^3＋，Tm^3＋等稀土离子，由于它们的能级与Ce^3＋的能级有交叠，使它们之间存在着竞争吸收或能量转移，对Ce^3＋的发光有较明显的变化，其中，Pr^3＋和Sm^3＋的掺入使其在红光区有发射峰，可以增加YAG：Ce的红色成分以提高显色性；Nd^3＋，Eu^3＋和Yb^3＋对Ce^3＋的发光有严重的猝灭作用．

英文摘要：

（Y0.95Ln0.01 Ce0.04 ） 3Al5O12 phosphors were synthesized by high on the luminescence properties of der reducing atmosphere and the doping effects of lanthanide ions Ln^3＋ phosphors were studied. YAG： Ce ,Ln spectra of excitation and emission show that the influence between Ce^3＋ and Ln^3＋ can be divided into the following three types： （1） The Ce^3＋ emission intensities are decreased slightly in the YAG： Ce doped with La^3＋ , Gd^3＋ and Lu^3＋ , respectively. （2） Because of the energy transfer and competitive absorption,for Pr^3＋ Sm^3＋ Tb^3＋,Dy^3＋ , Ho^3＋,Er^3＋, Tm^3＋ co-doped YAG： Ce, the Ce^3＋ emission intensities are observably decreased. In the YAG＂ Ce,Pr system, the emission of Pr^3＋ is at 609 nm; and in the YAG＂ Ce,Sm system, the emission of Sm^3＋ is at 616 nm. So it can increase the color rendering in- dex（CRI） of YAG： Ce doped with Pr^3＋ or Sm^3＋ （3） It was found that doping with Eu^3＋ , Yb^3＋ and Nd^3＋ in YAG： Ce the Ce^3＋ emission intensities quenched strongly.