Optical spectroscopy and excited state dynamics of CaMoO4:Pr3+

被引：36
作者：
Cavalli, Enrico [1 ]
Angiuli, Fabio [1 ]
Boutinaud, Philippe [2 ]
Mahiou, Rachid [3 ]
机构：
[1] Univ Parma, Dipartimento Chim Gen & Inorgan, I-43100 Parma, Italy
[2] Clermont Univ, ENSCCF, Lab Mat Inorgan, F-63000 Clermont Ferrand, France
[3] CNRS, UMR6002, F-63177 Clermont Ferrand, France
来源：
JOURNAL OF SOLID STATE CHEMISTRY | 2012年 / 185卷
关键词：
Calcium molybclate; Praseodymium; Luminescence; INTERVALENCE CHARGE-TRANSFER; ELECTRONIC-STRUCTURES; CRYSTALS; CAWO4; TRANSITION; SCHEELITE; TUNGSTATE; MECHANISM; EMISSION; POWDERS;
D O I：
10.1016/j.jssc.2011.11.004
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
The luminescence properties of CaMoO4:Pr3+ have been investigated in different experimental conditions in order to obtain information on the excitation and de-excitation pathways of this system. The structure of the emission spectrum depends on different factors: excitation conditions, doping level, temperature, etc. In addition, measurements carried out on single crystals and on micro- or nano-crystalline powders obtained by solid state reaction and sol-gel method have revealed that the morphology of the sample, and then the concentration of the lattice defects, strongly influences the excitation mechanism. These effects have been analysed in the light of available models and a general scheme accounting for the experimental observations has been proposed. (C) 2011 Elsevier Inc. All rights reserved.
引用
收藏
页码：136 / 142
页数：7
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