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Impurity trapped excitons under high hydrostatic pressure

机译:高静水压下杂质捕获的激子

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Paper summarizes the results on pressure effect on energies of the 4f~n → 4f~n and 4f~(n-1) 5d~1 → 4f~n transitions as well as influence of pressure on anomalous luminescence in Ln~(α+) doped oxides and fluorides. A model of impurity trapped exciton (ITE) was developed. Two types of ITE were considered. The first where a hole is localized at the Ln~(α+) ion (creation of Ln~((α-1)+)) and an electron is attracted by Coulomb potential at Rydberg-like states and the second where an electron captured at the Ln~(α+) ion (creation of Ln~((α-1)+)) and a hole is attracted by Coulomb potential at Rydberg-like states. Paper presents detailed analysis of nonlinear changes of energy of anomalous luminescence of Ba_xSr_(1-x)F_2:Eu~(2+) (x>0.3) and LiBaF_3:Eu~(2+), and relate them to ITE-4f~6 5d~1 states mixing.
机译:论文总结了压力对4f〜n→4f〜n和4f〜(n-1)5d〜1→4f〜n跃迁的能量的影响以及压力对Ln〜(α+)中异常发光的影响的结果。掺杂的氧化物和氟化物。建立了杂质捕获激子(ITE)模型。考虑了两种类型的ITE。第一个空穴位于Ln〜(α+)离子处(Ln〜((α-1)+的产生),电子在里德堡样态被库仑势吸引,第二个空穴被电子捕获在Ln〜(α+)离子处(Ln〜((α-1)+)的产生),在里德伯格样态的库仑势吸引了一个空穴。本文详细分析了Ba_xSr_(1-x)F_2:Eu〜(2+)(x> 0.3)和LiBaF_3:Eu〜(2+)异常发光能量的非线性变化,并将其与ITE-4f〜联系起来。 6 5d〜1状态混合。

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