研究了Gd3 Ga5O12 :Ag材料的制备及其发光性质 .Gd3 Ga5O12 :Ag材料通过固相反应法制得 ,采用X射线衍射法分析了材料的结晶度及成分 .用电子束蒸发将该材料制备成交流的薄膜电致发光器件 ,得到了较好的蓝紫色发光 ,发光峰分别位于 397和 46 7nm .通过对材料的光致发光和激发光谱的研究和比较 ,得出 397和 46 7nm分别来自于氧空位和Ag+ 的发光 . The preparation and the luminescent properties of Gd3Ga5O12: Ag materials were studied.The Gd3Ga5O12: Ag materials were prepared by solid-state reaction and the crystallinity and composition of the materials were analyzed by X-ray diffraction.The materials were prepared by electron beam evaporation Of thin-film electroluminescent devices, get a better blue-violet luminescence, the luminescence peaks are located at 397 and 46 7nm.According to the photoluminescence and excitation spectra of the material and comparison, 397 and 467nm come from the oxygen Gap and Ag + glow.