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Single-phase white-emitting phosphors Ba3Bi(PO4)3:Dy3+, Eu3+ with tunable correlated color temperature and high thermal stability towards light emitting applications

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Abstract

A series of single-phase white-emitting phosphors Ba3Bi(PO4)3 (BBP):8 at.% Dy, x at.% Eu were successfully synthesized through high temperature solid-phase method. The luminescence properties of BBP:8 at.% Dy, x at.% Eu were systematically investigated. Experimental results indicate the doping of Eu3+ ions can effectively compensate the red light component in the emission spectrum and tune the correlated color temperature of BBP:8 at.% Dy, x at.% Eu from cool white light (5097 K) to warm white light (3661 K). Moreover, BBP:8 at.% Dy3+, 0.8 at.% Eu3+ phosphor exhibits excellent thermal stability and the fluorescence intensity at 150 °C can still maintain 76% of that at 25 °C, while the activation energy is determined to be ~ 0.23 eV. In addition, the quantum efficiency of BBP:8 at.% Dy3+, 0.8 at.% Eu3+ phosphor were measured to be 61%. These results suggest that BBP:8 at.% Dy3+, 0.8 at.% Eu3+ can be a NUV-pumped single-phase white phosphors with excellent comprehensive performances.

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Acknowledgements

Financial support from the National Natural Science Foundation of China (Grant Nos. 51972181 and 61705231), Major Basic Research Projects of Shandong Natural Science Foundation (ZR2018ZB0650), Industrial and Academic Cooperation and Collaborative Education Project (201901287018, Zhejiang Tianhuang Science and Technology Industrial Co., Ltd.), High Quality Course Construction Project of Graduate Education in Shandong Province (SDYKC18051) and Postgraduate Tutor Ability Improvement Project of Shandong Province (SDYY17179) is gratefully acknowledged. The first author is also thankful for the support of the Taishan Scholar Program of Shandong Province.

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Authors and Affiliations

  1. College of Physics, University-Industry Joint Center for Ocean Observation and Broadband Communication, Qingdao University, Qingdao, 266071, China

    Jiaqi Zhao, Chen Hu, Jingyao Lu, Ruyi Sun, Zhen Wang, Yanzhen Yin, Wenlong Liu, Chengcheng Gu, Zichao Li, Degao Zhong & Bing Teng

  2. National Demonstration Center for Experiment Applied Physics Education (Qingdao University), Qingdao, 266071, China

    Chen Hu, Degao Zhong & Bing Teng

  3. Shandong Provincial University Key Laboratory of Optoelectrical Material Physics and Devices, Qingdao, 266071, China

    Chen Hu, Degao Zhong & Bing Teng

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  1. Jiaqi Zhao
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  2. Chen Hu
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Zhao, J., Hu, C., Lu, J. et al. Single-phase white-emitting phosphors Ba3Bi(PO4)3:Dy3+, Eu3+ with tunable correlated color temperature and high thermal stability towards light emitting applications. J Mater Sci: Mater Electron 32, 28077–28087 (2021). https://doi.org/10.1007/s10854-021-07162-0

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