Suppressed concentration quenching and tunable photoluminescence in Eu2+-activated Rb3Y(PO4)2 phosphors for full-spectrum lighting

Ming Zhao; Yeping Ge; Yurong Li; Xiaoyan Song; Zhiguo Xia; Xinping Zhang

doi:10.1038/s41377-024-01607-x

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Suppressed concentration quenching and tunable photoluminescence in Eu²⁺-activated Rb₃Y(PO₄)₂ phosphors for full-spectrum lighting

Original Articles

- Suppressed concentration quenching and tunable photoluminescence in Eu²⁺-activated Rb₃Y(PO₄)₂ phosphors for full-spectrum lighting
- Light: Science & Applications Vol. 13, Issue 11, Pages: 2688-2698(2024)
- Affiliations：
  
  1.Institute of Information Photonics Technology, School of Physics and Optoelectronic Engineering, Beijing University of Technology, Beijing 10083, China
  2.College of Materials Science and Engineering, Key Laboratory of Advanced Functional Materials, Education Ministry of China, Beijing University of Technology, Beijing 10083, China
  3.State Key Laboratory of Luminescent Materials and Devices, Guangdong Provincial Key Laboratory of Fiber Laser Materials and Applied Techniques, Guangdong Engineering Technology Research and Development Center of Special Optical Fiber Materials and Devices, School of Physics and Optoelectronics, South China University of Technology, Guangzhou 510641, China
- Author bio：
  
  Zhiguo Xia (xiazg@scut.edu.cn)
  Xinping Zhang (zhangxinping@bjut.edu.cn)
- Funds：
- DOI：10.1038/s41377-024-01607-x
  CLC：
- Received：14 April 2024，
  
  Revised：23 August 2024，
  
  Accepted：2024-08-26，
  
  Published Online：20 September 2024，
  
  Published：30 November 2024
- Accepted：
Scan QR Code
Zhao, M. et al. Suppressed concentration quenching and tunable photoluminescence in Eu²⁺-activated Rb₃Y(PO₄)₂ phosphors for full-spectrum lighting. Light: Science & Applications, 13, 2688-2698 (2024).
DOI：

Zhao, M. et al. Suppressed concentration quenching and tunable photoluminescence in Eu²⁺-activated Rb₃Y(PO₄)₂ phosphors for full-spectrum lighting. Light: Science & Applications, 13, 2688-2698 (2024). DOI： 10.1038/s41377-024-01607-x.

摘要

Abstract

Highly efficient inorganic phosphors are desirable for lighting-emitting diode light sources

and increasing the doping concentration of activators is a common approach for enhancing the photoluminescence quantum yield (PLQY). However

the constraint of concentration quenching poses a great challenge for improving the PLQY. Herein

we propose a fundamental design principle by separating activators and prolonging their distance in Eu

-activated Rb

Y(PO

)

phosphors to inhibit concentration quenching

in which different quenching r

ates are controlled by the Eu distribution at various crystallographic sites. The blue-violet-emitting Rb

Y(PO

)

Eu (

= 0.1%–15%) phosphors

with the occupation of Rb1

Rb2 and Y sites by Eu

exhibit rapid luminescence quenching with optimum external PLQY of 10% due to multi-channel energy migration. Interestingly

as the Eu concentration increases above 20%

prefer to occupy the Rb1 and Y sites with separated polyhedra and large interionic distances

resulting in green emission with suppressed concentration quenching

achieving an improved external PLQY of 41%. Our study provides a unique design perspective for elevating the efficiency of Eu

-activated phosphors toward high-performance inorganic luminescent materials for full-spectrum lighting.

关键词

Keywords

references

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