Issue 79, 2017, Issue in Progress

Simple method for simultaneously achieving red and green up-conversion luminescence

Abstract

The simultaneous emission of red and green light with high brightness and color purity was obtained from Er3+-doped NaYbF4-based up-conversion nanoparticles excited by 980 and 1550 nm excitation. The 2F5/2 level of Yb3+ showed high absorption efficiency at 980 nm. The 4I13/2 level of Er3+, an excellent UC intermediate with high energy and a long lifetime (milliseconds), absorbed more energy in the cross section (6.0 × 10−20 cm2) than did the Yb3+ 2F5/2 level (1.2 × 10−20 cm2) and was efficiently and directly pumped by light with a wavelength of ∼1500 nm. In contrast to particles resulting from other methods using complex coating for achieving multi-color emission in a single sample, the as-prepared luminescent NaYbF4:25% Er3+ up-conversion nanoparticles were designed to be single-layered and spherical and showed excellent dispersibility and uniform sizes. Nanoparticles prepared by this method exhibit a great advantage based on the simple preparation process and small particle size. On this basis, we expect to easily achieve the emission of three primary colors by these reasonably designed core–shell particles.

Graphical abstract: Simple method for simultaneously achieving red and green up-conversion luminescence

Supplementary files

Article information

Article type
Paper
Submitted
23 Aug 2017
Accepted
19 Oct 2017
First published
27 Oct 2017
This article is Open Access
Creative Commons BY license

RSC Adv., 2017,7, 50264-50268

Simple method for simultaneously achieving red and green up-conversion luminescence

X. Yin, H. Wang, M. Xing, Y. Fu, Y. Tian and X. Luo, RSC Adv., 2017, 7, 50264 DOI: 10.1039/C7RA09330F

This article is licensed under a Creative Commons Attribution 3.0 Unported Licence. You can use material from this article in other publications without requesting further permissions from the RSC, provided that the correct acknowledgement is given.

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