Broadband green upconversion luminescence of Ni2+ in KZnF3

被引：24
作者：
Grimm, J [1 ]
Wenger, OS [1 ]
Güdel, HU [1 ]
机构：
[1] Univ Bern, Dept Biochem & Chem, CH-3000 Bern 9, Switzerland
来源：
JOURNAL OF LUMINESCENCE | 2003年 / 102卷
关键词：
upconversion; Ni2+; fluoride host lattice;
D O I：
10.1016/S0022-2313(02)00539-2
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
The upconversion properties of divalent nickel doped into KZnF3 are reported. By exciting into the T-3(1g) (F-3) or E-1(g) excited state of Ni2+ with monochromatic light, a broad green luminescence around 20,000cm(-1) is observed that originates in the T-1(2g) higher excited state. The upconversion is shown to be a single ion process, consisting of a sequential two-photon absorption. The green luminescence is observed at all temperatures between 15 K and room temperature. This is strikingly different from what is observed in Ni2+ doped chloride and bromide materials in which the T-1(2g) --> (3)A(2g) luminescence is located in the red spectral range and is quenched well below room temperature. (C) 2002 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：380 / 385
页数：6
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