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采用高温固相法在还原气氛中合成蓝绿色Ba1.3Ca0.7--x--yZnxSiO4∶yEu2+荧光材料。研究Zn2+/Ca2+的摩尔比对基质骨架晶体结构及不同Eu2+掺量对荧光粉光谱性质的影响。结果表明:Zn2+的含量x为0.10~0.40时,Zn2+取代Ca2+能够形成固溶体,样品的晶体结构为Ba1.3Ca0.7SiO4。在277~368nm紫外光激发下,发射光谱为430~560nm的连续谱带,具有峰值波长为460、504nm的2个发射峰。利用Van Uitert经验公式计算了Eu2+取代Ba2+(Ca2+)时所占晶体学格位。
High - temperature solid - state synthesis of cyanate Ba1.3Ca0.7 - x - yZnxSiO4: yEu2 + fluorescent materials in a reducing atmosphere. The effects of molar ratio of Zn2 + / Ca2 + on the crystal structure of matrix and the different Eu2 + content on the spectral properties of phosphors were studied. The results show that when the content of Zn2 + is 0.10 ~ 0.40, Zn2 + can replace Ca2 + to form a solid solution. The crystal structure of the sample is Ba1.3Ca0.7SiO4. In the 277 ~ 368nm UV excitation, the emission spectrum of 430 ~ 560nm continuous band, with peak wavelength 460,504nm 2 emission peaks. The Van Uitert empirical formula was used to calculate the crystal lattice position occupied by Eu2 + instead of Ba2 + (Ca2 +).