在Rb2CO3-Li2CO3-Gd2O3-H3BO3体系中, 用自发结晶的方法获得了一种钆硼酸盐Rb2LiGdB2O6(RLGBO)单晶, 同时, 用固相合成法获得了RLGBO粉末多晶。单晶结构解析表明, RLGBO属于正交晶系, Pbcm空间群, 晶胞参数a=7.025 9(3), b=9.610 3(4), c=10.056 2(4)和z=4。热学性质表明, RLGBO在840 ℃下保持良好的热稳定性。在RLGBO中分别掺杂2%的Ce3+, 80%的Eu3+和50%的Tb3+之后, 其结构不会发生改变。在紫外光及近紫外光激发下, RLGBO∶Ce3+, RLGBO∶Eu3+和RLGBO∶Tb3+可分别发射蓝光, 红光和绿光。结果表明, RLGBO化合物可作为发光物质的基质材料。

The gadolinium-based borate Rb2LiGdB2O6 (RLGBO) single crystals were obtained by the spontaneous crystallization method from the Rb2CO3-Li2CO3-Gd2O3-H3BO3 system. Meanwhile, the polycrystalline powder RLGBO were obtained by solid phase reaction. The analysis of single crystal structure shows that RLGBO belongs to the orthorhombic system, Pbcm space group, with cell parameters of a=7.025 9(3), b=9.610 3(4), c=10.056 2(4) and z=4. Thermal properties indicate that RLGBO is stable below 840 ℃. After 2% Ce3+, 80% Eu3+ and 50% Tb3+ are doped in the RLGBO respectively, the host structure remains unchange. Under ultraviolet (UV) or near-UV light excitation, RLGBO∶Ce3+, RLGBO∶Eu3+ and RLGBO∶Tb3+can emit blue, red and green lights, respectively. The results show that RLGBO is a promising matrix compound for luminescence materials.