【摘要】 利用高温熔融法分别制备了Sb3+,Tb3+单掺和共掺的硅酸盐发光玻璃,并分析了它们的光谱性质。根据对Sb3+和Tb3+掺杂硅酸盐玻璃的激发光谱、发射光谱和发光衰减时间等特性的分析,研究了澄清剂Sb2O3的加入对Tb3+激活硅酸盐玻璃发光性能的影响。结果表明,在紫外光激发下,Tb3+激活硅酸盐玻璃中存在Sb3+离子至Tb3+离子的能量传递,但能量传递效率较低,能量传递表现为Sb3+离子的3P1能级与Tb3+离子的5D3能级之间的能量无辐射共振转移。同时Sb3+离子的加入将在Sb3+离子和Tb3+离子的激发重叠区域(200～350nm)对Tb3+离子的激发产生不小的负面影响,尚不足以通过Sb3+离子至Tb3+离子的能量传递得以弥补。因此在使用Sb2O3作为Tb3+激活硅酸盐发光玻璃的澄清剂时,应当注意权衡Sb3+离子对Tb3+离子发光性能的影响。更多还原

【Abstract】 The Sb3+-doped silicate glasses,Tb3+-doped silicate glasses,and Sb3+ and Tb3+ co-doped silicate glasses were synthesized by high-temperature melting method,and their spectral properties were analyzed.The effects of Sb2O3 added as a fining agent on the luminescent properties of Tb3+-doped silicate glasses were studied with excitation spectra,emission spectra and decay time.The results show that there is energy transfer from Sb3+ ions to Tb3+ ions in the Sb3+ and Tb3+ co-doped silicate glasses under UV excitation,but the energy transfer efficiency between them is quite low.The energy transfer takes place between the 3P1 energy level of Sb3+ ions and the 5D3 energy level of Tb3+ ions in the Sb3+ and Tb3+ co-doped silicate glasses,and the way of the energy transfer from Sb3+ ions to Tb3+ ions is nonradiative energy resonance transfer.Meanwhile,introducing Sb2O3 used as a fining agent will reduce the excitation intensity of Tb3+ ions in the silicate glasses in the overlap excitation region of both Sb3+ ions and Tb3+ ions,which corresponds to the region from 200 to 350 nm.The reduction in the excitation intensity of Tb3+ ions caused by introducing Sb3+ ions is so evident that it can not be compensated by the energy transfer from Sb3+ ions to Tb3+ ions.Therefore,the negative effects of Sb3+ ions on the luminescent properties of Tb3+ ions in silicate glasses should be measured when Sb2O3 is planned to be used as a fining agent in Tb3+-doped silicate glasses.更多还原