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以Mn2+掺杂石榴石结构Na_2Ca Sn_2Ge_3O12无机发光材料为研究对象，基于其丰富的化学组成与多样化的晶体学格位特征，采用不同化学计量比Na+/Sr2+/Ba2+阳离子对Ca2+格位取代，以及Sn4+/Ge4+反位占据等掺杂调控手段，实现了该材料体系中能量陷阱的类型、浓度和分布调制的多样化构筑，由此提升并精准调控该无机发光材料的余辉、X射线发光存储和应力发光的多模式发光性能。探索并展示了掺杂型Na_2Ca Sn_2Ge_3O12:Mn2+基发光材料在X射线发光扩展成像、应力传感等领域的潜在应用前景。
Abstract：Mn2+doped garnet-type Na_2Ca Sn_2Ge_3O12 phosphor was selected and studied due to its abundant chemical compositions and several crystallographic sites.Several ion substitution strategies including the chemical substitution of Na+/Sr2+/Ba2+on Ca2+sites and the anti-site occupation of Sn4+/Ge4+were designed for regulating the different energy traps and promoting multimode luminescence properties like persistent luminescence,X-ray storage capacities and mechano-luminescence.In addition,the X-ray luminescence storage and mechano-luminescence properties of these materials as well as their applications on X-ray luminescence extension imaging and stress sensing were also investigated.
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基本信息:
DOI：10.14062/j.issn.0454-5648.20220522
中图分类号:TQ131.12
引用信息:
[1]周新全,夏志国.石榴石结构Na_2CaSn_2Ge_3O_(12):Mn~(2+)的能量陷阱构筑与多模式发光性能调控[J].硅酸盐学报,2022,50(12):3103-3109.DOI:10.14062/j.issn.0454-5648.20220522.
基金信息:
国家自然科学基金(51972118)
2022-11-15
2022-11-15
2022-11-15