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Proceedings Paper

Metal-to-metal charge transfer band position control and luminescence quenching by cationic substitution in NaNbO3:Pr3+
Author(s): V. Castaing; L. Li; D. Rytz; Y. Katayama; A. D. Sontakke; S. Tanabe; M. Peng; B. Viana
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Paper Abstract

The development of materials showing efficient red-emitting persistent luminescence is still an ongoing challenge. As it shows red emission, around 613 nm, Pr3+ remains a good candidate for such application. Indeed, the transition from its 1D2 excited state to its 3H4 ground state is responsible of the red emission. In this paper the effect of Na substitution in NaNbO3:Pr3+ by K or Li cations in term of Metal-to-Metal Charge Transfer (MMCT) band position and its possible effect on persistent luminescence properties were investigated. MMCT energy shows increasing tendency with increasing average distance between A site (A = Li, Na, K, Pr) of perovskite. The most intense (efficient) photoluminescence was observed under MMCT excitation in Li0.03Na0.97NbO3:Pr3+. The relaxation pathways were discussed based on the configurational coordinate model.

Paper Details

Date Published: 16 February 2017
PDF: 7 pages
Proc. SPIE 10100, Optical Components and Materials XIV, 101000F (16 February 2017); doi: 10.1117/12.2253177
Show Author Affiliations
V. Castaing, PSL Research Univ., Chimie ParisTech, CNRS, Institut de Recherche de Chimie Paris (France)
L. Li, PSL Research Univ., Chimie ParisTech, CNRS, Institut de Recherche de Chimie Paris (France)
South China Univ. of Technology (China)
D. Rytz, Forschungsinstitut für mineralische und metallische Werkstoffe -Edelsteine/Edelmetalle- GmbH (Germany)
Y. Katayama, PSL Research Univ., Chimie ParisTech, CNRS, Institut de Recherche de Chimie Paris (France)
Kyoto Univ. (Japan)
A. D. Sontakke, PSL Research Univ., Chimie ParisTech, CNRS, Institut de Recherche de Chimie Paris (France)
S. Tanabe, Kyoto Univ. (Japan)
M. Peng, South China Univ. of Technology (China)
B. Viana, PSL Research Univ., Chimie ParisTech, CNRS, Institut de Recherche de Chimie Paris (France)


Published in SPIE Proceedings Vol. 10100:
Optical Components and Materials XIV
Shibin Jiang; Michel J. F. Digonnet, Editor(s)

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