Cr3+ and Yb3+ co-doped perovskite-like phosphor with improved thermal stability by efficient energy transfer

Meijuan Zheng; Xiaoling Dong; Dan Wu; Yue Wang; Wenping Zhou; Yifan Liu; Liangliang Zhang

doi:10.1063/5.0210547

AIP Advances (May 2024)

Cr3+ and Yb3+ co-doped perovskite-like phosphor with improved thermal stability by efficient energy transfer

Meijuan Zheng,
Xiaoling Dong,
Dan Wu,
Yue Wang,
Wenping Zhou,
Yifan Liu,
Liangliang Zhang

Affiliations

Meijuan Zheng: Inner Mongolia Key Lab of Nanoscience and Nanotechnology, School of Physical Science and Technology, Inner Mongolia University, Hohhot 010021, People’s Republic of China
Xiaoling Dong: Inner Mongolia Key Lab of Nanoscience and Nanotechnology, School of Physical Science and Technology, Inner Mongolia University, Hohhot 010021, People’s Republic of China
Dan Wu: Inner Mongolia Key Lab of Nanoscience and Nanotechnology, School of Physical Science and Technology, Inner Mongolia University, Hohhot 010021, People’s Republic of China
Yue Wang: Inner Mongolia Key Lab of Nanoscience and Nanotechnology, School of Physical Science and Technology, Inner Mongolia University, Hohhot 010021, People’s Republic of China
Wenping Zhou: Inner Mongolia Key Lab of Nanoscience and Nanotechnology, School of Physical Science and Technology, Inner Mongolia University, Hohhot 010021, People’s Republic of China
Yifan Liu: Inner Mongolia Key Lab of Nanoscience and Nanotechnology, School of Physical Science and Technology, Inner Mongolia University, Hohhot 010021, People’s Republic of China
Liangliang Zhang: State Key Laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, 3888 Eastern South Lake Road, Changchun 130033, China

DOI: https://doi.org/10.1063/5.0210547
Journal volume & issue: Vol. 14, no. 5
pp. 055133 – 055133-9

Abstract

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With the development of white light-emitting diode (LED) technology, near-infrared (NIR) phosphor-converted (pc) LED is becoming a new emerging light source. However, due to the lack of long wavelength components of the phosphors, the application of NIR pc-LED is restricted. In this work, a continuous ultra-broadband NIR emission without the emission gap in the 850–950 nm region has been realized in the Mg4Nb2O9 (MNO):Cr3+, Yb3+ phosphor. Meanwhile, when compared to MNO:Cr3+, an improved internal quantum efficiency (from 55.4% to 72.6%) and thermal stability (from 39% to 63% at 100 °C) have been obtained for MNO:Cr3+, Yb3+, which is attributed to the combined effect of the efficient energy transfer from Cr3+ to its nearest Yb3+ and the unique energy levels of Yb3+. The performances of the fabricated pc-LED devices by combining MNO:Cr3+, Yb3+ with 460 nm LED chips were also given, and the results demonstrate that the MNO:Cr3+, Yb3+ phosphor may have potential for practical application in the NIR pc-LED.

Published in AIP Advances

ISSN: 2158-3226 (Online)
Publisher: AIP Publishing LLC
Country of publisher: United States
LCC subjects: Science: Physics
Website: http://aipadvances.aip.org/

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