摘要
采用溶液反应法和高温固相反应法合成了ＫＡ１Ｆ４基质化合物及ＫＡ１Ｆ４∶Ｃｅ，Ｔｂ磷光体，测定了磷光体的激发光谱和发射光谱，研究了在碱金属氟铝酸盐基质中Ｃｅ３＋对Ｔｂ３＋的能量传递，根据Ｃｅ３＋、Ｔｂ３＋在ＫＡｌＦ４中的能级关系。
Matrix KA1F 4 was prepared through reaction of mixtures of solution K 2CO 3 upon certain solution of Al(OH) 3 plus HF(40%),dehydrating at 100℃ and annealing for 48hr at 450℃.A series of KA1F 4:Ce,Tb phosphors were synthesized by a solid reaction method.Their excitation and emission spectra have been investigated.It was observed that Ce 3+ can effectively sensitize Tb 3+ in KA1F 4,so as to enhance the emission of Tb 3+ significantly.KA1F 4:Ce,Tb might be a new high efficient green emitting phosphor.
出处
《光谱学与光谱分析》
SCIE
EI
CAS
CSCD
北大核心
1997年第3期6-9,共4页
Spectroscopy and Spectral Analysis
