Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/16353
Title: Photoluminescence properties of Er/Pr-Doped K0.5Na0.5NbO3 ferroelectric ceramics
Authors: Wu, X
Lau, CM
Kwok, KW 
Issue Date: 2015
Publisher: Wiley-Blackwell
Source: Journal of the American Ceramic Society, 2015, v. 98, no. 7, p. 2139-2145 How to cite?
Journal: Journal of the American Ceramic Society 
Abstract: Er/Pr-doped K0.5Na0.5NbO3 ceramics have been fabricated and the effects of Pr3+ on their photoluminescence properties have been investigated systematically. The visible upconversion emissions, near-infrared and mid-infrared downconversion emissions of Er3+ ions under the excitation of 980 nm have been studied in detail. The effects of Pr3+ on PL properties and energy-transfer processes have also been elucidated. By selecting an appropriate excitation source, simultaneous visible downconversion emissions of Er3+ and Pr3+ ions can be realized, and the emission colors of the ceramics can be tuned via the concentration of Pr3+ ions in a wide range from yellowish green to yellow. Our results also reveal that the photoluminescence emissions of the ceramics can be enhanced by the alignment of polarization of the ferroelectric host.
URI: http://hdl.handle.net/10397/16353
ISSN: 0002-7820
EISSN: 1551-2916
DOI: 10.1111/jace.13605
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