Issue 6, 2023

A novel bright cyan emitting phosphor of Eu2+ activated Ba6BO3Cl9 with robust thermal stability for full-spectrum WLED applications

Abstract

The currently available commercial white light-emitting diodes (WLEDs) suffer from a poor spectral continuity due to the absence of cyan light. Satisfactory bright cyan phosphors are urgently needed to promote the performance of WLEDs. Herein, we report a bright cyan-emitting phosphor Ba6BO3Cl9:Eu2+. The internal quantum efficiency and external quantum efficiency of the Ba6BO3Cl9:Eu2+ phosphor were measured to be 86.2% and 41.3%, respectively. Also, this phosphor exhibits strong endurance to luminescence thermal quenching, with the luminescence intensity at 150 °C retaining 93.9% of the value at room temperature. When applied in full-spectrum phosphor-converted WLEDs, the Ba6BO3Cl9:Eu2+ phosphor may efficiently compensate for the lack of cyan light emission of WLED devices prepared using blue/yellow/red phosphor strategies and also contribute to the improvement of Ra (color rendering index) of WLED devices based on RGB (red/green/blue) phosphor strategies. In addition, the Ba6BO3Cl9:Eu2+ phosphor can be applied as an independent efficient blue-cyan component to replace the blue light component in common WLEDs and reduces the proportion of high-energy blue light that is harmful to vision protection. These results demonstrate that Ba6BO3Cl9:Eu2+ will have a wide range of potential applications in indoor healthy lighting as a cyan phosphor.

Graphical abstract: A novel bright cyan emitting phosphor of Eu2+ activated Ba6BO3Cl9 with robust thermal stability for full-spectrum WLED applications

Associated articles

Supplementary files

Article information

Article type
Research Article
Submitted
03 Jan 2023
Accepted
10 Feb 2023
First published
11 Feb 2023

Inorg. Chem. Front., 2023,10, 1863-1875

A novel bright cyan emitting phosphor of Eu2+ activated Ba6BO3Cl9 with robust thermal stability for full-spectrum WLED applications

S. Jiao, R. Pang, J. Wang, T. Tan, C. Li and H. Zhang, Inorg. Chem. Front., 2023, 10, 1863 DOI: 10.1039/D3QI00015J

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