Energy transfer between activators at different crystallographic sites in Sr₃SiO₅:Eu²⁺

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• 作者：Zhijun Wang^a ; ^b ; Baozhu Yang^a ; Panlai Li^a ; ^b ; ^{lipanlai_780616@yahoo.com.cn} ; Zhiping Yang^a ; ^b ; Qinglin Guo^a ; ^b
• 关键词：Luminescence ; Sr3SiO5 ; Eu2+ ; Energy transfer
• 刊名：Physica B
• 出版年：2012
• 期刊代码：53_09214526
• 类别：ph
• 出版时间：15 April, 2012
• 卷：407
• 期：8
• 页码：1282-1286
• 文件大小：629 K

摘要

A yellow phosphor, Sr₃SiO₅:Eu²⁺, was synthesized by a high temperature solid-state method. Sr₃SiO₅:Eu²⁺ exhibits a single yellow emission under the blue radiation excitation. However, Sr₃SiO₅:Eu²⁺ shows a two-peak emission under the ultraviolet radiation excitation when Eu²⁺ doping content is less than 0.01 mol. Moreover, the blue emission disappears and the yellow emission reaches the peak value when Eu²⁺ doping content is 0.01 mol. Namely, the energy transfer takes place between the Eu²⁺ activators, which is located at two different crystallographic sites in the Sr₃SiO₅. And the energy transfer mechanism is the dipole-dipole interaction.