采用高温固相法合成了KCaPO4:Tb3+绿色荧光粉,并研究了材料的发光性质.KCaPO4:Tb什材料呈多峰发射,发射峰为437、490、545、587和623nm,分别对应Tb3+的5D3→F4和5D4→FJ=615,4,3跃迁发射,主峰为545nm;监测545nm发射峰,所得激发光谱由4f7 5d1宽带吸收(200～330nm)和4f-4f电子吸收(330～400nm)组成,主峰为380nm.研究了Tb3+掺杂浓度,电荷补偿剂Li+、Na+、K+和Cl-,及敏化剂Ce3+对KCaPO4:Tb3+材料发光强度的影响,结果显示,调节激活剂浓度、添加电荷补偿剂或敏化剂均能较大程度地提高材料的发光强度.
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