Ce3+ and Pr3+ 5d-energy levels in the (pseudo) perovskites KMgF3 and NaMgF3

被引：29

作者：

Le Masson, NJM

Vink, AP

Dorenbos, P

Bos, AJJ

VanEijk, CWE

Chaminade, JP

机构：

[1] Delft Univ Technol, Interfac Reactor Inst, Radiat Technol Grp, NL-2629 JB Delft, Netherlands

[2] Inst Chim Mat Condensee Bordeaux, CNRS, F-33608 Pessac, France

来源：

JOURNAL OF LUMINESCENCE | 2003年 / 101卷 / 03期

关键词：

5d-configuration; KMgF3; NaMgF3; Ce3+; Pr3+; photon cascade emission;

D O I：

10.1016/S0022-2313(02)00411-8

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The location of the 5d-energy levels of Ce3+ and Pr3+ in the cubic perovskite KMgF3 and in the distorted perovskite NaMgF3 was determined from spectroscopic studies in the vacuum ultraviolet. It is established that Ce3+ and Pr3+ ions both occupy the same site in each host: K+ sites for KMgF3 and Na+ sites for NaMgF3. The small crystal field splitting and the small value of the centroid shift of the 4f(n- 1) 5d-configuration yield a relatively high energy for the lowest 5d state of both Ce3+ and Pr3+. The lowest 5d state of Pr3+ in both hosts is found at energy higher than the 4f(2) S-1(0) state, enabling the photon cascade emission to occur. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：175 / 183

页数：9

共 21 条

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