氧离子浓度对CaAlSiN_3:Eu^(2+)荧光材料温度特性的影响

Effect of oxygen ion concentration on temperature characteristics of CaAlSiN_3:Eu^(2+) fluorescent materials

采用高温固相法合成了氮化物荧光材料CaAlSiN_3:Eu^(2+),研究了不同氧含量时CaAlSiN_3:Eu^(2+)发光性能的变化。当氧含量为2.5%时,得到了最高的发光强度和最佳的温度猝灭性能。从CaAlSiN_3:Eu^(2+)结晶性能以及CaAlSiN_3基质能带结构的变化等方面分析了氧离子浓度变化引起CaAlSiN_3:Eu^(2+)发光性能改变的原因。

the nitride fluorescent material CaAlSiN_3:Eu^(2+) was synthesized by high temperature solid phase method,and the changes of luminescence properties of CaAlSiN_3:Eu^(2+) at different oxygen content were studied.When the oxygen content is 2.5%,the highest luminescence intensity and the optimum temperature quenching performance are obtained.The reasons for the change of the luminescent properties of CaAlSiN_3:Eu^(2+) caused by the change of oxygen ion concentration are analyzed from the aspects of CaAlSiN_3:Eu^(2+) crystallization performance and the change of CaAlSiN_3 matrix energy band structure.