Ce^(3+)/Eu^(2+)掺杂无机发光材料构效关系与唯象理论

Structure-property Correlation and Phenomenological Theory in Ce^(3+)/Eu^(2+)-doped Inorganic Luminescent Materials

Ce^(3+)/Eu^(2+)掺杂无机发光材料在照明、显示、监测、示踪、防伪以及信息存储等领域具有重要应用。Ce^(3+)/Eu^(2+)的5d电子与基质材料中近邻阴离子配体之间存在强交互作用,共价键效应、晶体场劈裂和电声子耦合作用可以有效调控其激发光谱和发射光谱,从而赋予Ce^(3+)/Eu^(2+)掺杂无机固体高效可调的优异性能。近年来,研究人员研发出了许多Ce^(3+)/Eu^(2+)掺杂的无机发光材料,并深入研究了其成分、结构与性能之间的关系。本文系统综述了Ce^(3+)/Eu^(2+)掺杂无机发光材料的构效关系与唯象理论研究进展,详细总结了基质材料组分、晶体结构、局域结构和电子结构对发光性能的影响规律,并对未来发展提出了展望。

Ce^(3+)/Eu^(2+)-doped inorganic luminescence materials have been well developed as an indis⁃pensable component in fields of lighting,display,monitoring,tracing,anti-counterfeiting,and in⁃formation storage.The f-d transitions from isolated luminescent centers Ce^(3+)/Eu^(2+)are strongly influ⁃enced by the coordinated crystalline environment,under which energy levels of Ce^(3+)/Eu^(2+)may be split and shifted due to covalency effect,crystal field splitting,and electron-phonon coupling,re⁃sulting in their highly tunable luminescence properties.To date,researchers have developed many high-performance Ce^(3+)/Eu^(2+)-doped luminescent materials,and a series of sound theories have been established to gain insight into the composition-structure-property correlations.Herein,we review the current progress in Ce^(3+)/Eu^(2+)-doped phosphors,focusing on composition-structure-property corre⁃lation and phenomenological theory.Particular attention is devoted to overviewing the effect of the local structure and electronic structure on the luminescence property.Finally,an outlook toward po⁃tential theory developments is proposed.