Issue 3, 2018

Up-conversion quantum yields of SrF2:Yb3+,Er3+ sub-micron particles prepared by precipitation from aqueous solution

Abstract

Herein, we report near-infrared-to-visible up-conversion (UC) in SrF2:Yb3+,Er3+ sub-micron crystals prepared via a facile route in an aqueous solution. Subsequent calcination at 600 °C allows us to achieve good UC quantum yields, reaching 2.8% at an excitation power density of 10 W cm−2 for a sample doped with 2 mol% of Yb3+ and 2 mol% of Er3+. This UC quantum yield of SrF2:Yb3+,Er3+ is in the range of record UC quantum yields reported in the literature for standard host systems such as La2O2S, BaY2ZnO5 and NaYF4 phosphors. Interestingly, the 2 mol% of Yb3+ required to achieve optimal UC in the SrF2 host is much lower than the amount of Yb3+ required in the other host systems. Furthermore, we studied the population and depopulation kinetics of the Er3+:2H9/2, Er3+:2H11/2,4S3/2 and Er3+:4F9/2 states using time-resolved photoluminescence measurements in order to provide insight into the UC mechanism. The facile preparation method combined with high UC quantum yield makes SrF2:Yb3+,Er3+ materials attractive candidates for solar energy harvesting, sensors, solid state lasers, and luminescent markers.

Graphical abstract: Up-conversion quantum yields of SrF2:Yb3+,Er3+ sub-micron particles prepared by precipitation from aqueous solution

Supplementary files

Article information

Article type
Paper
Submitted
28 Oct 2017
Accepted
19 Dec 2017
First published
19 Dec 2017

J. Mater. Chem. C, 2018,6, 598-604

Up-conversion quantum yields of SrF2:Yb3+,Er3+ sub-micron particles prepared by precipitation from aqueous solution

S. Kuznetsov, Yu. Ermakova, V. Voronov, P. Fedorov, D. Busko, I. A. Howard, B. S. Richards and A. Turshatov, J. Mater. Chem. C, 2018, 6, 598 DOI: 10.1039/C7TC04913G

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements