Ca10(Si2O7)3Cl2:Eu^2+,Mn^2+单一基质白光荧光粉的发光性质

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用高温固相法合成了颜色可调的Ca10(Si2O7)3Cl2:Eu^2+,Mn^2+荧光粉。研究了它的发光性质和Eu^2+与Mn^2+之间的能量传递。Eu^2+离子在Ca10(Si2O7)3Cl2晶体中形成了峰值为426nm和523nm的5d→4f跃迁发光,Eu^2+中心向Mn^2+中心传递能量,敏化Mn^2+离子4T1(4G)→6Al(6s)跃迁而产生585nm的黄光发射。黄绿蓝3个发射带叠加在单一基质中实现了白光发射。3个发射带的激发谱范围位于250-480nm处, Ca10(Si2O7)3Cl2:Eu
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