Issue 11, 2025

Unlocking dual Mn3+/Mn4+ emissions in garnet phosphors for WLED and plant growth lighting applications

Abstract

Garnet-based lattices (A3B5O12) have emerged as promising hosts for Mn co-doping due to their wide band gap and robust mechanical properties. However, challenges in stabilizing Mn3+, balancing Mn3+/Mn4+ emissions, and optimizing synthesis for thermal stability and efficiency have limited practical applications. In this study, Gd3Ga5O12 (GGG) garnet was synthesized with Mn3+ and Mn4+ co-doping via a simple solid-state reaction. The incorporation of Mn ions into octahedral [GaO6] sites and optimizing the synthesis condition to enhance photoluminescence (PL) properties were investigated. The phosphor achieved 100% color purity, 0.32 eV activation energy, 20.0% internal quantum efficiency, and a 0.0408 ms lifetime. A prototype pc-LED was fabricated, demonstrating that the Mn3+/Mn4+-doped Garnet-based phosphor can be used as potential WLED and plant growth LED components. These results provide insights into stabilizing Mn3+, controlling Mn3+/Mn4+ balance, and improving thermal stability for advanced lighting applications.

Graphical abstract: Unlocking dual Mn3+/Mn4+ emissions in garnet phosphors for WLED and plant growth lighting applications

Supplementary files

Transparent peer review

To support increased transparency, we offer authors the option to publish the peer review history alongside their article.

View this article’s peer review history

Article information

Article type
Paper
Submitted
14 Jan 2025
Accepted
06 Mar 2025
First published
17 Mar 2025
This article is Open Access
Creative Commons BY-NC license

RSC Adv., 2025,15, 8275-8286

Unlocking dual Mn3+/Mn4+ emissions in garnet phosphors for WLED and plant growth lighting applications

K. Thi Thu, V. D. Huan, N. Tu, D. Quang Trung, N. Van Du, N. Van Quang, T. Ngoc Bach, L. Tien Ha, N. Duy Hung, D. X. Viet, N. T. Tuan, N. M. Hieu, M. T. Tran and P. Thanh Huy, RSC Adv., 2025, 15, 8275 DOI: 10.1039/D5RA00345H

This article is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported Licence. You can use material from this article in other publications, without requesting further permission from the RSC, provided that the correct acknowledgement is given and it is not used for commercial purposes.

To request permission to reproduce material from this article in a commercial publication, 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 commercial 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