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稀土正硼酸盐(REBO3)晶体是一类潜在的紫外发光和非线性光学应用方面的材料,其中方解石结构的LuBO3:Ce3+晶体的光输出可达到26000 Ph·Mev-1,几乎是BGO(Bi4Ge3O12)的3倍,是PbWO4的135倍,并且该晶体表现出显著的闪烁特性和物力稳定性,例如快的衰减时间(~33 ns)及不易潮解等;但是由于方解石结构相、球霰石结构相以及高温球霰石结构相间存在相变反应,使得大尺寸的纯LuBO3单晶难于生长。因此,在晶体的生长过程中迫切需要明确各结构间的相互关系,并且为了进一步优化和拓展其应用空间,还需要深入了解其组成-结构-性能的相互关系。主要对各种稀土正硼酸盐的晶体结构和结构间的转变进行了总结与分析。
REBO3 crystals are a class of potential materials for UV and nonlinear optical applications. The LuBO3: Ce3 + crystal with calcite structure can reach 26000 Ph · Mev-1 and almost BGO (Bi4Ge3O12) ), Which is 135 times higher than that of PbWO4. The crystal shows remarkable scintillation properties and physical stability, such as fast decay time (~ 33 ns) and non-deliquescence. However, due to the calcite structural phase, vaterite phase As well as the phase transition reaction between the high-temperature vaterite structures, making the large-size pure LuBO3 single crystal difficult to grow. Therefore, in the process of crystal growth, it is urgent to clarify the relationship between the various structures, and in order to further optimize and expand its application space, it is also necessary to understand its composition-structure-performance interdependence. Mainly on a variety of rare earth orthoboric crystal structure and the transition between the structure were summarized and analyzed.