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Review—Similarity of 3d 3 (Mn4+, Cr3+)-Ion Luminescence with Raman Scattering Spectroscopy
ECS Journal of Solid State Science and Technology ( IF 1.8 ) Pub Date : 2021-09-03 , DOI: 10.1149/2162-8777/ac210b
Sadao Adachi

A discussion is given on 3d 3 (Mn4+, Cr3+)-ion luminescence properties in various host materials in connection with inelastic light scattering spectroscopy such as Raman and Brillouin scattering. It is shown that the 2 E g 4 A 2g luminescence for the intra-3d 3-shell electrons can be formulated in a form that is quite equivalent to the inelastic light scattering. A comparison of some 2 E g 4 A 2g luminescence features, e.g., the temperature dependence of the anti-Stokes to Stokes intensity ratio, with those of Raman scattering shows very similarity between them. However, no clear similarity can be found between the 4 T 2g 4 A 2g emission/absorption and inelastic light scattering features theoretically nor experimentally. Such differences in similarity or dissimilarity of the intra-3d 3-shell transition features with the inelastic light scattering may come from the different spectral dispersion features of the 2 E g and 4 T 2g states against Dq (or Dq/B) in the Tanabe−Sugano energy-level diagram thus further promising the electron−lattice interaction to be described by the conventional first-order (one-phonon band) or multi-order (combination band) perturbation theory for the former case (i.e., 2 E g -related luminescence and inelastic light scattering) and by the Franck−Condon principle within the configurational-coordinate model for the latter case (4 T 2g -related luminescence/absorption).



中文翻译:

综述——3d 3 (Mn4+, Cr3+)-离子发光与拉曼散射光谱的相似性

讨论了各种主体材料中的3 d 3 (Mn 4+ , Cr 3+ )-离子发光特性,并结合非弹性光散射光谱,例如拉曼和布里渊散射。结果表明,3 d 3壳层内电子的2 E g4 A 2 g发光可以表述为与非弹性光散射非常等效的形式。一些2 E g4 A 2 g 的比较 发光特征,例如反斯托克斯与斯托克斯强度比的温度依赖性,与拉曼散射的发光特征显示出它们之间的非常相似。然而,在理论上和实验上,在4 T 2 g 4 A 2 g 发射/吸收和非弹性光散射特征之间没有发现明显的相似性。3 d 3壳内跃迁特征与非弹性光散射的这种相似性或不相似性的差异可能来自于2 E g4 T 2 g态的不同光谱色散特征与 Tanabe-Sugano 能级图中的Dq(或Dq / B)因此进一步有望通过传统的一阶(单声子带)或多阶(组合带)扰动理论描述的电子-晶格相互作用前一种情况(即2 E g相关发光和非弹性光散射)和后一种情况(4 T 2 g相关发光/吸收)的构型坐标模型中的 Franck-Condon 原理。

更新日期:2021-09-03
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