Jump to main content
Jump to site search
Access to RSC content Close the message box

Continue to access RSC content when you are not at your institution. Follow our step-by-step guide.



Color-tunable upconversion luminescence and prolonged Eu3+ fluorescence lifetime in fluoride KCdF3:Yb3+,Mn2+,Eu3+via controllable and efficient energy transfer

Author affiliations

Abstract

Due to the lack of intermediate levels and the large energy mismatch with Yb3+, the achievement of efficient upconversion (UC) of Eu3+ is a great challenge. Herein, intense UC emission of Eu3+ is demonstrated via controllable and efficient unidirectional energy transfer from Yb3+–Mn2+ dimers in perovskite fluoride KCdF3:Yb3+,Mn2+,Eu3+ synthesized by a facile solvothermal method. The UC emission color of KCdF3:Yb3+,Mn2+,Eu3+ can be well tuned from yellow to orange and ultimately turned into Eu3+ pure red emission by controlling the Eu3+ concentration. Moreover, a significantly prolonged Eu3+ UC emission lifetime is observed in this system, and it is ascribed to the genetic effect of the sustained resonance energy transfer from Yb3+–Mn2+ dimers to Eu3+. The pump power and temperature dependent UC behaviors further suggest that the phosphor exhibits excellent chromaticity stability. Owing to the long-lived and chromaticity stable UC luminescence, the as-prepared KCdF3:Yb3+,Mn2+,Eu3+ phosphor may be a highly suitable candidate for lifetime-encoded information encryption, anti-counterfeiting, etc.

Graphical abstract: Color-tunable upconversion luminescence and prolonged Eu3+ fluorescence lifetime in fluoride KCdF3:Yb3+,Mn2+,Eu3+ via controllable and efficient energy transfer

Back to tab navigation

Supplementary files

Article information


Submitted
24 Mar 2020
Accepted
01 May 2020
First published
01 May 2020

J. Mater. Chem. C, 2020, Advance Article
Article type
Paper

Color-tunable upconversion luminescence and prolonged Eu3+ fluorescence lifetime in fluoride KCdF3:Yb3+,Mn2+,Eu3+ via controllable and efficient energy transfer

X. Han, E. Song, W. Chen, Y. Zhou and Q. Zhang, J. Mater. Chem. C, 2020, Advance Article , DOI: 10.1039/D0TC01502D

Social activity

Search articles by author

Spotlight

Advertisements