Correlating O-deficiency and luminescence property of Tb3+ doped SrO

Kaina Wang; Jipeng Fu; Shuqin Chang; Xuan Sun; Tianyi Sun; Su Zhang; Ran Pang; Lihong Jiang; Xiaojun Kuang; Evan Wenbo Zhao; Chengyu Li; Shiqing Xu; Mingxue Tang

Advanced Powder Materials (Jul 2023)

Correlating O-deficiency and luminescence property of Tb3+ doped SrO

Kaina Wang,
Jipeng Fu,
Shuqin Chang,
Xuan Sun,
Tianyi Sun,
Su Zhang,
Ran Pang,
Lihong Jiang,
Xiaojun Kuang,
Evan Wenbo Zhao,
Chengyu Li,
Shiqing Xu,
Mingxue Tang

Affiliations

Kaina Wang: Key Laboratory of Rare Earth Optoelectronic Materials and Devices of Zhejiang Province, Institute of Optoelectronic Materials and Devices, China Jiliang University, 310018 Hangzhou, China
Jipeng Fu: Key Laboratory of Rare Earth Optoelectronic Materials and Devices of Zhejiang Province, Institute of Optoelectronic Materials and Devices, China Jiliang University, 310018 Hangzhou, China; Corresponding author.
Shuqin Chang: Center for High Pressure Science and Technology Advanced Research, 100094 Beijing, China
Xuan Sun: Key Laboratory of Rare Earth Optoelectronic Materials and Devices of Zhejiang Province, Institute of Optoelectronic Materials and Devices, China Jiliang University, 310018 Hangzhou, China; Center for High Pressure Science and Technology Advanced Research, 100094 Beijing, China
Tianyi Sun: Key Laboratory of Rare Earth Optoelectronic Materials and Devices of Zhejiang Province, Institute of Optoelectronic Materials and Devices, China Jiliang University, 310018 Hangzhou, China
Su Zhang: State Key Laboratory of Rare Earth Resources Utilization, Changchun Institute of Applied Chemistry, Chinese Academic of Sciences, 130022 Changchun, China
Ran Pang: State Key Laboratory of Rare Earth Resources Utilization, Changchun Institute of Applied Chemistry, Chinese Academic of Sciences, 130022 Changchun, China
Lihong Jiang: State Key Laboratory of Rare Earth Resources Utilization, Changchun Institute of Applied Chemistry, Chinese Academic of Sciences, 130022 Changchun, China
Xiaojun Kuang: Guangxi Key Laboratory of Electrochemical and Magneto-chemical Functional Materials, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin 541004, PR China
Evan Wenbo Zhao: Magnetic Resonance Research Center, Institute for Molecules and Materials, Radboud University, Nijmegen, 6525AJ, the Netherlands
Chengyu Li: State Key Laboratory of Rare Earth Resources Utilization, Changchun Institute of Applied Chemistry, Chinese Academic of Sciences, 130022 Changchun, China
Shiqing Xu: Key Laboratory of Rare Earth Optoelectronic Materials and Devices of Zhejiang Province, Institute of Optoelectronic Materials and Devices, China Jiliang University, 310018 Hangzhou, China
Mingxue Tang: Center for High Pressure Science and Technology Advanced Research, 100094 Beijing, China; Corresponding author.

Journal volume & issue: Vol. 2, no. 3
p. 100112

Abstract

Read online

Cubic rock salt can lower down or break the rare earth transition barrier through interstitial or vacancy defects owing to its great deformation and rotation flexibility. Here, we demonstrate that oxygen vacancies in SrO are induced by proper oxidization and atmosphere adjustment, resulting in defects with various depths and crystal field distortion. The thermally assisted tunneling from defects to 5D4 state and electronic population decrease on 5D3 state of Tb3+ are observed by the deformation of adjacent oxygen octahedral structure. Finally, the as-prepared SrO: 0.01 Tb3+ phosphors, commercial BaMgAl10O17: Eu2+ blue phosphor, and CaAlSiN3: Eu2+ red phosphor are mixed and coated onto 280 nm deep-ultraviolet LED chip to assemble white light-emitting LED device. The LEDs show CCT of 3850 K, 4136 K, and 4741 K, with color rendering index of 90.3, 90.8, and 92.1, respectively. These insights will advance the fundamental knowledge of crystal engineering in cubic rock salt, and enable new ways to manipulate energy transfer and electronic transition via defects.

Published in Advanced Powder Materials

ISSN: 2772-834X (Online)
Publisher: KeAi Communications Co. Ltd.
Country of publisher: China
LCC subjects: Technology: Mining engineering. Metallurgy
Website: https://www.keaipublishing.com/en/journals/advanced-powder-materials/

About the journal

Abstract

Keywords