采用高温固相反应合成了(Y,Gd)Al3(BO3)4中掺杂Ce3+和Tb3+的样品,并研究了其结构特性、光谱特性和发光过程中稀土离子间的能量传递.(Y,Gd)Al3(BO3)4属于三角晶系,具有R32的空间群,掺入Ce3+,Tb3+杂质后晶格结构没有变化.(Y,Gd)Al3(BO3)4∶Ce,Tb的激发光谱由3个宽谱带组成,这3个谱带分别对应于Ce3+的4f-5d跃迁吸收.在该体系中存在Ce3+→Tb3+,Gd 3+→Tb3+和Gd3+→Ce3+的能量传递,其中Ce3+起敏化剂和中间体的双重作用.
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