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人工晶体学报 ›› 2026, Vol. 55 ›› Issue (9): 1472-1480.DOI: 10.16553/j.cnki.issn1000-985x.2026.0027

• 研究论文 • 上一篇    下一篇

Bi3+,Eu3+共掺MgY2Si3O10可调谐发光特性研究

王庆平1(), 王丽博1, 金叶2   

  1. 1.河南机电职业学院机电工程学院,郑州 451100
    2.重庆理工大学材料科学与工程学院,重庆 401320
  • 收稿日期:2026-02-24 出版日期:2026-09-20 发布日期:2026-09-29
  • 作者简介:王庆平(1991—),女,河南省人,讲师。E-mail:919632788@qq.com
  • 基金资助:
    河南省普通高校就业创业课题(JYB2025124);河南省校企协同创新项目(26AXQXT018)

Tunable Luminescence Properties of Bi3+ and Eu3+ Co-Doped MgY2Si3O10

WANG Qingping1(), WANG Libo1, JIN Ye2   

  1. 1.School of Mechanical and Electrical Engineering,Henan Mechanical and Electrical Vocational College,Zhengzhou 451100,China
    2.College of Materials Science and Engineering,Chongqing University of Technology,Chongqing 401320,China
  • Received:2026-02-24 Online:2026-09-20 Published:2026-09-29

摘要: 针对近紫外激发型白光发光二极管(WLED)对高显色性、低色温单基质荧光粉的迫切需求,本研究提出一种基于MgY2Si3O10基质、Bi3+与Eu3+共掺杂的新型颜色可调荧光粉体系。采用高温固相法成功合成了系列MgY2Si3O10∶0.02Bi3+,mEu3+(m=0~0.22)样品,系统表征了其物相结构与发光特性。结果表明,Bi3+在基质中占据两种晶格格位,在344 nm激发下呈现双峰宽带发射,Eu3+则呈现典型的红光发射。通过光谱重叠分析与荧光寿命测试,证实了Bi3+向Eu3+存在高效的能量传递,其传递效率随Eu3+掺杂浓度增加最高可达约65%。基于浓度猝灭模型计算得到临界能量传递距离RC≈13.2 ?,确定能量传递机制主要为电偶极-电四极(d-q)相互作用。通过调节Eu3+掺杂浓度,成功实现了发光颜色从蓝光经白光到红光的连续可调,其中白光发射色度坐标为(0.333,0.306),相关色温为5 419 K,显色指数约为85.6,且该体系表现出良好的热稳定性。本研究为开发高性能、颜色可调的WLED荧光材料提供了系统的实验与理论依据。

关键词: WLED; Bi3+,Eu3+共掺; 高温固相法; 能量传递; 颜色可调; 热稳定性

Abstract: Addressing the urgent demand for high color rendering index and low color temperature single-phase phosphor for near-ultraviolet-excited white light emitting diode (WLED), this study proposed a novel color-tunable phosphor system based on MgY2Si3O10 host co-doped with Bi3+and Eu3+. A series of MgY2Si3O10∶0.02Bi3+, mEu3+ (m=0~0.22) samples were successfully synthesized via the high-temperature solid-state method. Their phase structure and luminescence properties were systematically characterized. The results indicate that Bi3+ occupies two distinct crystallographic sites in the host lattice, exhibiting a dual-peak broad-band emission under 344 nm excitation, while Eu3+ displays characteristic red emission. Through spectral overlap analysis and fluorescence lifetime test, it is confirmed that there is efficient energy transfer (ET) from Bi3+ to Eu3+, with its efficiency increasing with Eu3+ doping concentration and reaching a maximum of approximately 65%. The critical energy transfer distance (RC) is calculated to be about 13.2 ? based on the concentration quenching model and the primary ET mechanism is electric dipole-electric quadrupole (d-q) interaction. By adjusting the Eu3+ doping concentration, continuous tuning of the emission color is successfully achieved, ranging from blue through white to red. The white emission exhibits chromaticity coordinates of (0.333,0.306), a correlated color temperature (CCT) of 5 419 K, a general color rendering index (Ra) of approximately 85.6, as well as good thermal stability. This study provides systematic experimental and theoretical foundations for the development of high-performance, color-tunable phosphor materials for WLED applications.

Key words: WLED; Bi3+ and Eu3+ co-doping; high-temperature solid-state method; energy transfer; color tunability; thermal stability

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