物理化学学报 >> 2018, Vol. 34 >> Issue (3): 237-246.doi: 10.3866/PKU.WHXB201708281

所属专题: 高被引科学家特刊

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混合价态Eu(+2, +3)离子激活的单一组分发光材料:设计合成、发光性质及机理

梁思思1,尚蒙蒙1,*(),林君1,2,*()   

  1. 1 中国科学院长春应用化学研究所, 稀土资源利用国家重点实验室, 长春 130022
    2 五邑大学应用物理与材料学院, 广东 江门 529020
  • 收稿日期:2017-06-26 发布日期:2017-12-18
  • 通讯作者: 尚蒙蒙,林君 E-mail:mmshang@ciac.ac.cn;jlin@ciac.ac.cn
  • 作者简介:尚蒙蒙,1987年出生于山东省。2008年本科毕业于聊城大学化学系。现为中国科学院长春应用化学研究副研究员,主要研究方向为用于白光LED和场发射显示器的稀土离子掺杂无机荧光材料|林君,1966年出生于吉林长春。1989年本科毕业于吉林大学,现为中国科学院长春应用化学研究所研究员。主要研究方向为微纳米结构发光材料的控制合成及其在显示,照明及生物医学等领域的应用探索
  • 基金资助:
    国家自然科学基金(51672265);国家自然科学基金(91433110)

Single-Component Luminescent Materials Activated with Mixed-Valence Eu(+2, +3): Designed Synthesis, Luminescent Properties and Mechanisms

Sisi LIANG1,Mengmeng SHANG1,*(),Jun LIN1,2,*()   

  1. 1 State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China
    2 School of Applied Physics & Materials, Wuyi University, Jiangmen 529020, Guangdong Province, P. R. China
  • Received:2017-06-26 Published:2017-12-18
  • Contact: Mengmeng SHANG,Jun LIN E-mail:mmshang@ciac.ac.cn;jlin@ciac.ac.cn
  • Supported by:
    the National Natural Science Foundation of China(51672265);the National Natural Science Foundation of China(91433110)

摘要:

作为绿色照明光源的典型代表,白光发光二极管(LED)被誉为21世纪的新一代照明光源。而作为白光LED重要组成部分的荧光粉,对其性能要求也不断被提升。Eu2+和Eu3+由于其电子结构上的差别导致其截然不同的发光性质。其中,Eu2+的特征发射为4f-4f跃迁,而Eu3+离子的特征发射为4f-5d跃迁。为了结合两者各自的发光特性,近年来对于混合价态Eu离子的研究成为热点。混合价态Eu离子掺杂荧光粉结合了Eu2+和Eu3+离子各自的发光特点,具有颜色灵活可调的优良性质。本文主要从Eu2+、Eu3+各自性质出发,从不等价取代、晶场调控等三个方面综述了混合价态Eu(+2, +3)离子激活的单一基质发光材料近年来的研究进展。此外,对不同方法制备的混合价态Eu离子掺杂荧光粉的发光性能及发光机理也进行了归纳总结,为无机荧光材料的发展提供了新的思路。

关键词: 荧光粉, 混合价态, 单一组分, 銪, 白光发光二极管

Abstract:

White LEDs are considered the next-generation light source as they are environmentally friendly and have high efficiencies. Therefore, researches are being conducted to meet the performance requirements of phosphors, which are the crucial components of white LEDs. Eu2+ and Eu3+ ions have different electronic structures, which lead to distinct photoluminescence properties. The characteristic emissions of Eu2+ and Eu3+ originate from the 4f-4f and 4f-5d transitions, respectively. In order to combine their respective features, the research of mixed-valence Eu ions into single-phase phosphors has become a hot research topic in recent years. The mixed-valence Eu ion-doped phosphors have tunable luminescence properties because they possess the respective properties of Eu2+ and Eu3+. From their respective characters of Eu2+ and Eu3+, this paper mainly reviews the progress of mixed valence Eu(+2, +3) ion-activated single-component luminescent materials in recent years from three aspects: unbalanced substitution, crystal field regulation, and other systems. In addition, the respective photoluminescence properties of Eu2+ and Eu3+ and the luminescence performances and mechanisms of the mixed-valence Eu ion-activated phosphors have been summarized. The luminescence performances and mechanisms have been summarized as well. All the research works carried out in this field provide inspiration for the investigation of new phosphors.

Key words: Phosphor, Mixed valence, Single component, Eu, Whitelight-emitting diode

MSC2000: 

  • O649