The 3 d 3 -configuration transition metal ions like Mn 4+ and Cr 3+ are very important activator ions for the realization of warm white-LED lighting and indoor plant cultivation applications using an UV/blue-chip InGaN device. The Racah parameters in conjunction with the Tanabe−Sugano energy-level diagram are widely used as a means of describing the effects of electron−electron repulsion within the transition metal complexes in coordination chemistry. In constructing the Tanabe−Sugano diagram for specific ions of 3 d n configuration, an approximate value of C / B is assumed and an excited-state energy divided by B is plotted as a function of Dq / B . Once the various optical spectra have been identified a more refined comparison can then be made between theory and experiment, and more accurate values of Dq (crystal-field strength), B and C can be deduced. The present ...

中文翻译：

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Tanabe-Sugano图中3d 3-配置离子（如Mn 4+和Cr 3+）的Racah参数比率C / B

3 d 3-构型的过渡金属离子（如Mn 4+和Cr 3+）是非常重要的活化剂离子，对于使用UV /蓝筹InGaN器件实现暖白LED照明和室内植物栽培应用而言。Racah参数与Tanabe-Sugano能级图结合在一起，被广泛用作描述过渡金属配合物中电子-电子排斥在配位化学中的作用的一种方法。在构造3 dn构型的特定离子的Tanabe-Sugano图时，假定C / B的近似值，并且将被B除的激发态能量绘制为Dq / B的函数。一旦确定了各种光谱，就可以在理论和实验之间进行更精细的比较，并获得更准确的Dq（晶体场强度）值，B和C可以推论。现在...