Salt-embedded carbon nanodots as a UV and thermal stable fluorophore for light-emitting diodes

Kim, Tak H., Wang, Fu, McCormick, Paul, Wang, Lianzhou, Brown, Chris and Li, Qin (2014) Salt-embedded carbon nanodots as a UV and thermal stable fluorophore for light-emitting diodes. Journal of Luminescence, 154 5224-5230. doi:10.1016/j.jlumin.2014.04.002


Author Kim, Tak H.
Wang, Fu
McCormick, Paul
Wang, Lianzhou
Brown, Chris
Li, Qin
Title Salt-embedded carbon nanodots as a UV and thermal stable fluorophore for light-emitting diodes
Journal name Journal of Luminescence   Check publisher's open access policy
ISSN 0022-2313
1872-7883
Publication date 2014-01-01
Year available 2014
Sub-type Article (original research)
DOI 10.1016/j.jlumin.2014.04.002
Open Access Status Not yet assessed
Volume 154
Start page 5224
End page 5230
Total pages 7
Place of publication Amsterdam, The Netherlands
Publisher Elsevier
Language eng
Subject 3107 Atomic and Molecular Physics, and Optics
3104 Condensed Matter Physics
1600 Chemistry
1303 Specialist Studies in Education
1304 Biophysics
Abstract UV and thermal stable, photoluminescent carbon dots (CDs) prepared by embedding CDs in ionic salt crystals such as NaCl, KCl, KBr are demonstrated. The salt crystal embedding matrix does not interfere with CDs strong emission, and provides effective protection to CDs from the environment. The degradation of 20% of the initial luminescence intensity of salt-encapsulated CDs (S-CDs) is 15 times slower under UV and 6 times slower under heat compared to that of CDs in silica matrix. We also demonstrate that the S-CDs can be applied as a color-converting phosphor for typical GaN UV light emitting diodes (LEDs) with significant improvements in stability as well as processability.
Keyword Carbon nanodots
Color-converting phosphors
Photoluminescent nanoparticles
Thermal stability
UV stability
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Chemical Engineering Publications
Official 2015 Collection
 
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