中国物理B ›› 2010, Vol. 19 ›› Issue (12): 127809-127809.doi: 10.1088/1674-1056/19/12/127809
周峻, 王育华, 刘碧桃, 刘吉地
Zhou Jun(周峻), Wang Yu-Hua(王育华)†, Liu Bi-Tao(刘碧桃), and Liu Ji-Di(刘吉地)
摘要: This paper reports that the green phosphor BaAl11.9O19:0.1Mn2+ is prepared by a flux assisted solid state reaction method. The effect of flux systems on the crystal structure, morphology and luminescent properties of the phosphor are studied in detail. The samples are characterized by the application of x-ray diffraction patterns, scanning electron microscopy patterns, luminescent spectra and decay curves. The results show that a pure phase BaAl12O19 can be achieved at the firing temperature above 1300 du by adding the proper flux system, the firing temperature is reduced at least 200 du in comparison with the conventional solid state reaction method. Maximum photoluminescence emission intensity is observed at 517 nm for (AlF3+Li2CO3) flux system under vacuum ultraviolet region (147 nm) excitation. The photoluminescence emission intensity and the decay time of these phosphor is found to be more superior to that of the corresponding sample prepared by the conventional solid state reaction method implying the suitability of this route for the preparation of display device worthy phosphor materials.
中图分类号: (Inorganic compounds)