Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/36054
Title: Effect of phase transition on photoluminescence of Er-doped KNN ceramics
Authors: Wu, X
Lau, CM
Kwok, KW 
Keywords: Er-doped KNN ceramics
Up-conversion photoluminescence
Phase transition
Energy transfer
Lifetime
Issue Date: 2014
Publisher: North-Holland
Source: Journal of luminescence, 2014, v. 155, p. 343-350 How to cite?
Journal: Journal of luminescence 
Abstract: The lead-free ceramics K0.5Na0.5NbO3 doped with x mol% Er3+ ions have been successfully manufactured and their photoluminescence properties, including the up-conversion visible (480-700 nm) emissions, down-conversion near infrared (1400-1680 nm) and middle infrared (2620-2850 nm) emissions, emission colors and lifetimes of the energy levels have been systemically investigated. The corresponding photoluminescence mechanism has been discussed in detail. Our results show that the Er-doping induces a phase transition from orthorhombic to cubic-like as well as inhibits the grain growth due to the donor-type nature. Both the change of crystallographic structures and concentration-quenching effect induced by Er3+ ions have great influences on the photoluminescence properties. Because of the wide emission ranges and long lifetimes, Er-doped K0.5Na0.5NbO3 ceramics are the promising candidates for optoelectronic applications.
URI: http://hdl.handle.net/10397/36054
ISSN: 0022-2313
DOI: 10.1016/j.jlumin.2014.07.005
Appears in Collections:Journal/Magazine Article

Access
View full-text via PolyU eLinks SFX Query
Show full item record

SCOPUSTM   
Citations

12
Last Week
0
Last month
Citations as of Aug 21, 2017

WEB OF SCIENCETM
Citations

11
Last Week
0
Last month
Citations as of Aug 20, 2017

Page view(s)

35
Last Week
0
Last month
Checked on Aug 20, 2017

Google ScholarTM

Check

Altmetric



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.