【摘要】 用高温熔融法分别制备了Tb3+和Dy3+单掺和共掺的硅酸盐发光玻璃,并分析了其光谱性质。根据Dy3+和Tb3+掺杂硅酸盐玻璃的激发和发射光谱、发光衰减时间谱等特性,研究了Dy3+与Tb3+之间的能量传递关系。结果表明:在硅酸盐玻璃中,Dy3+能敏化Tb3+的特征发光,其能量传递方式为非辐射共振传递。Dy3+和Tb3+共掺的硅酸盐玻璃的发光性能明显提高,1%(质量分数,下同)Dy3+的掺入可使7%Tb3+掺杂的硅酸盐玻璃中Tb3+的550nm特征发光强度增加55%～60%。更多还原

【Abstract】 The silicate glasses doped with Tb3+, Dy3+ respectiely and co-doped with Tb3+ and Dy3+ were synthesized by high-tempe- rature melting method. The energy transfer between Dy3+ and Tb3+ were studied according to excitation and emission spectra and decay time. The results show that the Dy3+ ions can effectively sensitize Tb3+ activator by nonradiative energy resonance transfer in silicate glasses. The luminescence properties of silicate glass co-doped with Dy3+ and Tb3+ are improved. The emission intensity of Tb3+ ions at 550 nm is increased by 55%–60% for 7% (in mass, the same below) Tb3+-doped silicate glasses co-doped with 1% Dy3+.更多还原