Ba<sup>2+</sup>‐Si<sup>4+</sup>‐Incorporated High‐Efficiency and Excellent Thermal Stable YAG:Ce<sup>3+</sup> Ceramic Phosphors for Laser‐Driven Lighting
Abstract Y 3 Al 5 O 12 :Ce 3+ (YAG:Ce 3+ ) ceramic phosphor (CP) is the predominant color convert utilized in laser‐diode (LD) driven lighting. How to obtain a high‐efficiency CP is the challenge. A strategy to depress lattice defects by the Ba 2+ ‐Si 4+ replacement for the Y 3+ ‐Al 3+ pair is proposed. On the basis of charge equilibrium, the heavy element Ba also can enhance the thermal stability of CPs. The luminous intensity at 200 °C is improved from 83% to 97% of that at room temperature, and then the luminous efficiency reaches 262 lm W −1 from blue lasers to white light. The luminous flux of the white LD flashlight using the CP increases by 30% compared with that of the commercial LD flashlight. These results demonstrate that the strategy is effective in optimizing YAG:Ce 3+ CP performance. The luminescence saturation coupled with optics and heat is investigated.
Authors
- Peng Sun (ORCID: https://orcid.org/0000-0002-5162-5866)
- Pan Hu (ORCID: https://orcid.org/0000-0002-8214-6147)
- Zhaohua Luo (ORCID: https://orcid.org/0000-0002-8852-9034)
- Jun Jiang (ORCID: https://orcid.org/0000-0002-8365-0812)
- Yongfu Liu (ORCID: https://orcid.org/0000-0002-9502-5897)
Institutions
- Chinese Academy of Sciences (CN)
- University of Chinese Academy of Sciences (CN)
- Ningbo Institute of Industrial Technology (CN)
Publication Details
- Journal
- Advanced Optical Materials
- Published
- 2024-08-26
- DOI
- https://doi.org/10.1002/adom.202401672
- Citations
- 15
- Primary Topic
- Luminescence Properties of Advanced Materials
- Type
- article
- Field-Weighted Citation Impact
- 1.76
Funders
- National Natural Science Foundation of China
- Youth Innovation Promotion Association of the Chinese Academy of Sciences
- Natural Science Foundation of Ningbo
- National Key Research and Development Program of China