Performance of Photoluminescence Glass Fiber in Eu~(3+) Doped ZMCB and ZMLB

摘要

The photoluminescence glass fiber in Eu~(3+) doped ZnO-MgO-CdO-B_2O_3 is drawn artificially by high-temperature solid state reaction and glass stream hauling method in handling of photoluminecent waste material . Its diameter is 0 .01 approx 0.30 mm and its length is more than 10 m. The strong emission band of Eu~(3+) at 613 nm belongs to ~5D_0- >~7F_2 electric dipole transition, and the emission intensity at 591 nm is 40 percent of that at 613 nm and intensity belongs to ~5D_0- >~7F_2 magnetic dipole transition . It is known to all that Eu~(3+) mainly hold asymmetrical center lattice in local ambient and also possesses symmetrical center lattice. By fitting decay curves of Eu~(3+) of different concentrations, it is discovered that the luminescence changes from the first order decay to the second order decay while the concentrations of Eu~(3+) are increased . It is observed by SEM that glass fiber shows smooth surface , low crystal growing rate , high density of fracture and shellfish veins of fracture obviously submits ditch form. Meanwhile, a series of mechanics parameters were measured and the spectral behaviors of the glass fiber in Eu doped ZnO-MgO-CdO-B_2O_3 were studied.