Issue 2, 2017

Emission color tuning through manipulating the energy transfer from VO43− to Eu3+ in single-phased LuVO4:Eu3+ phosphors

Abstract

Recently, rare earth (RE) ion doped single-phased phosphors, which can emit tunable colors upon single wavelength excitation, have received a great deal of attention, but most of them involve multiple dopants as luminescence centers. This work reports on single-phased LuVO4:Eu3+ phosphors with tunable emission colors upon a single wavelength excitation while using Eu3+ as a single dopant ion. The tunable emission is realized through precisely manipulating the energy transfer efficiency from VO43− to Eu3+ by controlling the Eu3+ doping content, which allows modulating the photoemission intensity ratio between VO43− and Eu3+ upon excitation at 265 nm and therefore color tuning from blue (0.2204, 0.2194) to red (0.6703, 0.2986). Time-resolved photoluminescence (PL) spectroscopy measurements reveal that the energy transfer process occurs 4 μs after the excitation and becomes dominant 10 μs later with the disappearance of the VO43− emission. The temperature-dependent PL spectra show that the energy transfer can be accelerated as the temperature increases, and it leads to abnormal enhancement of the Eu3+ emission at the earlier state. A similar scenario is not observed upon exciting the phosphors at the intrinsic absorption of Eu3+, which implies that the reversible energy transfer from Eu3+ to VO43− is impossible. Our results demonstrate a feasible strategy for tuning the emission color of single-phased phosphors through controlling the energy transfer process from the host to the dopant, and it opens up new possibilities for designing tunable luminescent materials for future optoelectronics applications.

Graphical abstract: Emission color tuning through manipulating the energy transfer from VO43− to Eu3+ in single-phased LuVO4:Eu3+ phosphors

Article information

Article type
Paper
Submitted
25 set 2016
Accepted
02 dez 2016
First published
05 dez 2016

J. Mater. Chem. C, 2017,5, 390-398

Emission color tuning through manipulating the energy transfer from VO43− to Eu3+ in single-phased LuVO4:Eu3+ phosphors

F. Kang, L. Li, J. Han, D. Y. Lei and M. Peng, J. Mater. Chem. C, 2017, 5, 390 DOI: 10.1039/C6TC04172H

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