A model for spectral diffusion induced by resonant energy migration applied to the 4A2 → 2E transition of Cr3+ in [Cr(ox)3]3- (ox = C2O42-)

被引:5
|
作者
Milos, Mia [1 ]
Hauser, Andreas [1 ]
机构
[1] Univ Geneva, Dept Chim Phys, CH-1211 Geneva 4, Switzerland
关键词
Energy migration; Spectral diffusion; Fluorescence line narrowing; Chromium(III)-trts-oxalate; OXALATE;
D O I
10.1016/j.jlumin.2009.04.093
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
In the 3D oxalate networks [NaCr(ox)(3)][Rh(bpy)(3)]ClO4 and [NaCr(ox)(3)][Ru(bpy)(3)] (ox=oxalite, bpy = 2.2'-bipyridine) three different types of energy migration within the (4)A(2) -> E-2 transition can be identified One is a resonant process between spectral members spaced by the ground-state zero-field splitting (ZFS). This leads to the sequential appearance of additional sharp lines spaced by the ground-state ZFS in the fluorescence line narrowing spectrum across the inhomogeneous line. The second one is a quasi-resonant process between spectral neighbours and manifests itself by rapid spectral diffusion. The third one is the well-known phonon-assisted process setting in at higher temperature (C) 2009 Elsevier B V All rights reserved.
引用
收藏
页码:1901 / 1904
页数:4
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