Issue 44, 2023

An Al3+-incorporated Ca2LuNbO6:Mn4+ oxide phosphor with dramatic deep-red and far-red emission bands

Abstract

Novel Al3+-incorporated Ca2LuNbO6:Mn4+ oxide phosphors with a double-perovskite structure were successfully prepared by a high-temperature solid state reaction. Excited with 355 nm ultraviolet light, the Ca2LuNbO6:Mn4+ samples mainly showed a weak deep-red emission band around 625–725 nm with a peak at 685 nm. After the incorporation of a certain amount of Al3+, not only the deep-red emission band was continuously enhanced, but also a new far-red emission band around 680–780 nm with a peak at 710 nm was clearly observed. A further increase of the Al3+ content resulted in a dramatic enhancement of both the deep-red and far-red emission bands. The luminescence quantum yield of the optimal Ca2LuNb0.6Al0.4O6 : 0.3%Mn4+ sample reached about 34%, which was much higher than that without Al3+ (<10%). Moreover, temperature-dependent luminescence measurement demonstrated good thermal stability, making it applicable to phosphor-converted light-emitting diodes. The dramatically enhanced red emission and a broadened spectral region matched well with the absorbance range of photosensitive pigments, showing significant potential for application in plant cultivation lighting.

Graphical abstract: An Al3+-incorporated Ca2LuNbO6:Mn4+ oxide phosphor with dramatic deep-red and far-red emission bands

Supplementary files

Article information

Article type
Paper
Submitted
04 Aug 2023
Accepted
26 Oct 2023
First published
26 Oct 2023

J. Mater. Chem. C, 2023,11, 15731-15741

An Al3+-incorporated Ca2LuNbO6:Mn4+ oxide phosphor with dramatic deep-red and far-red emission bands

J. Wu, Z. Yin, S. Shi and L. Fu, J. Mater. Chem. C, 2023, 11, 15731 DOI: 10.1039/D3TC02782A

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