Ho^3＋／Tm^3＋掺杂氟磷酸盐玻璃的研究

Research on Fiuorphosphate Glass Doped with Ho^3＋/Tm^3＋

氟磷酸盐玻璃具有声子能量低、离子键性强、稀土离子掺杂浓度高、发光效率高等优点。采用正交设计法确定氟磷酸盐玻璃的配方为44KH2P04—40AlF3·3．5H2O-10BaF2—0．1Nb2O5，并采用该配方为基质制备了稀土Ho^3＋、Tm^3＋掺杂的氟磷酸盐玻璃，通过差热分析研究了该玻璃的形成过程；研究了Ho^3＋、Tm^3＋的掺杂量和Ho^3＋、Tm^3＋在该玻璃中的能级结构，测试了玻璃样品的吸收光谱，结果表明稀土掺杂的样品在416nm、448nm、537nm、641nm、684nm、791nm和1035nm处有明显的吸收峰，当稀土离子Ho^3＋、Tm^3＋的掺杂量为0．3mol％和1．5mol％时，稀土离子的特征吸收相对最强。

Fluorphosphate glass exhibits some merits of low phonon energy, strong ionic bond, high doping concentration of rare earth, high luminescence efficiency etc. In this paper, fluorphosphate glass with composion of 44KH2PO4-40AlF3·3.5H2O-10BaF2-0.1Nb2O5 was determined by the orthogonal design method. The fluorphosphate glass doped With Ho^3＋ and Tm^3＋ were prepared With composing above. Formation process of glass was investigated by DTA. Doping quantity of Ho^3＋ , Tm^3＋ and level strusture among glass of Ho^3＋ , Tm^3＋ were studied. Absorption spectra of glass samples were measured and the results indicated that there are obvious absorption peaks at 416 nm, 448 nm, 537 nm, 641 nm,684 nm, 791 nm and 1 035 nm respectively for the glass samples doped with rare earth ions. The absorption relative intensity was the strongest for the sample with 0.3 mol%Ho^3＋ and 1.5 mol% Tm^3＋.