Electronic transitions in Li2B4O7:Cu single crystals

被引：11
|
作者：
Nagirnyi, V. [1 ]
Kotlov, A. [1 ,2 ]
Corradi, G. [2 ]
Watterich, A.
Kirm, M. [1 ]
机构：
[1] Univ Tartu, Inst Phys, 142 Riia Str, EE-51014 Tartu, Estonia
[2] Hungarian Acad Sci, Solid State Phys Res Inst & Opt, H-1525 Budapest, Hungary
来源：
PHYSICA STATUS SOLIDI C - CURRENT TOPICS IN SOLID STATE PHYSICS, VOL 4, NO 3 | 2007年 / 4卷 / 03期
基金：
匈牙利科学研究基金会;
关键词：
D O I：
10.1002/pssc.200673778
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A low-temperature study of Li2B4O7: Cu crystals by methods of time-resolved polarization spectroscopy using synchrotron radiation in the 4-20 eV region and microsecond Xe flash lamp pulses in the 3-6 eV region is reported. The results strongly support the conclusion about a low-symmetry position of the Cu+ ion in its ground state. The temperature dependence of the decay kinetics of the Cu+-related 3.35 eV emission indicates a triplet nature for the relaxed excited state of the Cu+ centres. A pseudo off-centre position of the Cu+ ion in the relaxed excited state is suggested. (c) 2007 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
引用
收藏
页码：885 / +
页数：2
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