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无机材料学报

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一种可被紫光激发的红色荧光粉 RbZnF3:Eu3⁺ 中的异常热猝灭现象研究

董浪平1, 李施璇1, 杨少星1, 侯京山1, 林燕丹4, 周鹏程5, 孙雪娇3, 孙宜阳3, 陈大钦2, 房永征1   

  1. 1.上海应用技术大学 材料科学与工程学院,上海 201418;
    2.福建师范大学 物理与能源学院,福州 350117;
    3.中国科学院 上海硅酸盐研究所,关键陶瓷材料全国重点实验室,上海 201899;
    4.复旦大学 智能机器人及先进制造创新学院,上海 200438;
    5.上海航空电器有限公司,上海 201101
  • 收稿日期:2025-11-01 修回日期:2025-12-06
  • 通讯作者: 孙宜阳, 研究员. E-mail: yysun@mail.sic.ac.cn; 房永征, 教授. E-mail: fyz1003@sina.com
  • 作者简介:董浪平(1993-), 副教授. E-mail: lpdong@sit.edu.cn

Anomalous Fluorescence Thermal Quenching in a Red-emitting RbZnF3:Eu3+ Phosphor under Violet Excitation

DONG Langping1, LI Shixuan1, YANG Shaoxing1, HOU Jingshan1, LIN Yandan4, ZHOU Pengcheng5, SUN Xuejiao3, SUN Yiyang3, CHEN Daqin2, FANG Yongzheng1   

  1. 1. Faculty of Materials Technology, Shanghai Institute of Technology, Shanghai 201418, China;
    2. College of Physics and Energy, Fujian Normal University, Fuzhou 350117, China;
    3. State Key Laboratory of High Performance Ceramics, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 201899, China;
    4. College of Intelligent Robotics and Advanced Manufacturing, Fudan University, Shanghai 200438, China;
    5. Shanghai Aviation Electric Co., Ltd, Shanghai 201101, China
  • Received:2025-11-01 Revised:2025-12-06
  • Contact: SUN Yiyang, professor. E-mail: yysun@mail.sic.ac.cn; FANG Yongzheng, professor. E-mail: fyz1003@sina.com
  • About author:DONG Langping (1993-), associate professor. E-mail: lpdong@sit.edu.cn
  • Supported by:
    National Key Research and Development Program of China (2021YFB3500501, 2021YFB3500502, 2021YFB3500503, 2021YFB3500500); National Natural Science Foundation of China (NSFC) (52302188); Shanghai Sailing Program (23YF1446100); Shanghai Rising-Star Program (21QC1401100); Talent Introduction Program of Shanghai Institute of Technology (YJ2022-1)

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摘要： 热猝灭是荧光材料在固态照明器件中应用时面临的关键挑战。本文报道了一种具有抗热猝灭行为的钙钛矿型荧光粉RbZnF3:Eu3⁺。在紫光激发下,该荧光粉发出明亮的红光。随着温度升高,其发光强度先增至175 ℃(即抗热猝灭),随后下降;当温度高于200 ℃时,发光强度低于室温值。通过全面表征,我们提出所观察到的抗热猝灭行为主要源于缺陷能级的存在。第一性原理计算表明,Rb空位和F空位可能是这些缺陷能级的主要原因。我们还利用RbZnF3:Eu3⁺荧光粉制备了白光LED,验证了其潜在应用价值。

关键词: 荧光粉, 热猝灭, 钙钛矿, 发光二极管, 缺陷工程

Abstract: Thermal quenching is a key challenge in the application of fluorescent materials in solid state lighting devices. Herein, we report a perovskite phosphor RbZnF3:Eu3+ exhibiting anti-thermal quenching behavior. Under violet excitation, this phosphor yields bright red emission. As the temperature rises, the luminescence intensity first increases up to 175 ℃ (i.e., anti-thermal quenching) and then decreases. When the temperature is above 200 ℃, the luminescence intensity falls below the value at room temperature. We carry out comprehensive characterizations and propose that the observed anti-thermal quenching behavior is mainly due to the existence of defect levels. First-principles calculations show that Rb vacancy and F vacancy could be responsible for the observed defect levels. We also fabricate a white LED using the RbZnF3:Eu3+ phosphor to verify its potential application.

Key words: phosphors, thermal quenching, perovskite, LED, defect engineering

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