摘要
用氢氧化钇纳米棒作为前驱体,与氧化铕、二氧化钛、碱式碳酸镁混合后,用碳粉和硫粉混合硫化合成Y2O2S:Eu3+,Mg2+,Ti 4+红色长余辉发光材料,研究硫化温度对Y2O2S:Eu3+,Mg2+,Ti 4+形貌和发光性质的影响。改变烧结温度分别制备得到零维、一维、三维的Y2O2S:Eu3+,Mg2+,Ti 4+长余辉材料。与三维粉体相比,零维和一维粉体的激发光谱向短波长移动,同时零维和一维粉体的余辉曲线衰减较快;热释光谱有两个峰,峰值分别在340K和490K附近,表明当烧结温度超过1 000℃,存在有两种不同类型的电子陷阱。
Using Y(OH)3 nanorods as precursor, Y2O2S: Eu3+ , Mg2+ , Ti4+ red long-lasting phosphors were prepared via solid-state reaction, and the effect of sulfuretting temperature on the morphology and luminescent properties was discussed. Zero-, one-and three-dimensional Y2O2S: Eu3+ , Mg2+ ,Ti4+ phosphors were prepared by changing sulfuretting temperature. Compared with three-dimensional phosphors, excitation peaks of zero-and one-dimensional phosphors shifted to the shorter wavelength. The decay speeds of the afterglow for zero-and one-dimensional phosphors were faster than that of three-dimensional Y2O2S:Eu3+ ,Mg2+ ,Ti4+ phosphors. Two peaks of TL curves located at around 340 K and 490 K separately, indicated the existance of two kinds of trap types exist when the calcination temperature exceeded 1 000℃.
出处
《太原理工大学学报》
CAS
北大核心
2014年第3期296-300,305,共6页
Journal of Taiyuan University of Technology
基金
国家自然科学基金资助项目(51072128)
山西省科技攻关资助项目(2011032104010-01)
山西省自然科学基金资助项目(2013021004-2)
关键词
硫氧化钇
发光性质
长余辉
Y2O2 S
Luminescence properties
long-lasting phosphor