Pr3+ 和 Yb3+ 共同做磷酸盐眼镜被准备学习他们的光性质。刺激和排放系列和腐烂曲线被用来描绘他们的光。我们在 470 nm 与一个高精力光子在 Pr3+ 离子的刺激之上表明那,二在红外线附近(NIR ) 光子从 Pr3+ 通过有效合作精力转移(CET ) 在 950 1100 nm (Yb3+:2F5/22F7/2 ) 被射出到 Yb3+ 。最大的精力转移效率(ETE ) 和相应的量效率分别地来临直到 90.17% 和 190.17% 。玻璃材料可能为改进基于硅的太阳能电池的效率发现潜在的申请。
Pr3+ and Yb3+ co-doped phosphate glasses are prepared to study their optical properties. Excitation and emission spectra and decay curves are used to characterize their luminescence. We demonstrate that upon excitation of Pr3+ ion with one high energy photon at 470 nm, two near-infrared (NIR) photons are emitted at 950-1100 nm (yb3+:2F5/2 - 2F7/2) through an efficient cooperative energy transfer (CET) from Pr3+ to Yb3+. The maximum energy transfer efficiency (ETE) and the corresponding quantum efficiency approach up to 90.17% and 190.17%, respectively. The glass materials might find potential application for improving the efficiency of silicon-based solar cells.