摘要
Eu3+ activated CaWO4 was prepared by high temperature solid state reaction technique. Red afterglow was observed for in the CaWO4∶Eu after exciting with 254 nm light due to Eu3+ transition from 5D0 to 7FJ (J=0, 1, 2, 3,4). By the cal culation of the thermoluminescence spectrum of CaWO4∶Eu, we conclude that there were two types of trap centers: VCa″ was formed by substitution of Ca2+ by Eu3 + and complex traps were produced because of substitution of W6+ by Eu3+.
Eu3+ activated CaWO4 was prepared by high temperature solid state reaction technique. Red afterglow was observed for in the CaWO4:Eu after exciting with 254 nm light due to Eu3+ transition from D-5(0) to F-7(J) (J=0, 1, 2, 3, 4). By the calculation of the thermoluminescence spectrum of CaWO4:Eu, we conclude that there were two types F of trap centers: V (Ca)'' was formed by substitution of Ca2+ by Eu3+ and complex traps were produced because of substitution of W6+ by Eu3+.
出处
《无机化学学报》
SCIE
CAS
CSCD
北大核心
2004年第12期1433-1436,共4页
Chinese Journal of Inorganic Chemistry
基金
国家自然科学基金资助项目(No.20171018)
广东省自然基金重点资助项目(No.013201
No.36706)
