Eu Ions Doped Transparent Glass Ceramics Containing Sr <sub>5</sub> (PO <sub>4</sub> ) <sub>3</sub> F Crystals for UV LEDs
New types of red fluorescent conversion materials promote the application of solid-state lighting technology. In this study, we successfully prepared Eu-doped strontium fluorophosphate (Sr<sub>5</sub>(PO<sub>4</sub>)<sub>3</sub>F:Eu) red-emitting transparent glass ceramics (GCs) with SrF<sub>2</sub>-Zn<sub>2</sub>SO<sub>4</sub>-P<sub>2</sub>O<sub>5</sub>-H<sub>3</sub>BO<sub>3</sub> glass matrix using a melt-quenching method. GCs were obtained by heating precursor glass (PG). After the obtained Sr<sub>5</sub>(PO<sub>4</sub>)<sub>3</sub>F:Eu GCs (GC120) were thermally treated at 610°C for 120 min, they exhibited a transmittance of 48% in the range of 500-800 nm, achieving a stronger luminescence intensity and longer fluorescence lifetime than PG. The CIE 1931 color coordinates of GC120 were in the red region (0.643, 0.357), and its photoluminescence quantum yield (PLQY) was 37.9%. Finally, using GC120 as the red phosphors, white-light LEDs with a correlated color temperature of 5356 K and R<sub>a</sub> = 84.6 (color render index) were obtained. Hence, Sr<sub>5</sub>(PO<sub>4</sub>)<sub>3</sub>F:Eu GCs are promising red phosphors for white-light LEDs under UV-LED excitation.
Authors
- Xianxue Li (ORCID: https://orcid.org/0000-0003-4802-2156)
- Chenyang Zhang (ORCID: https://orcid.org/0000-0002-9128-5376)
- Yi‐Xiang Chen (ORCID: https://orcid.org/0000-0003-4900-4638)
- Zhangxu Chen (ORCID: https://orcid.org/0000-0002-8836-9536)
Institutions
- Chinese Academy of Sciences (CN)
- Anshan Normal University (CN)
- Technical Institute of Physics and Chemistry (CN)
- Hanshan Normal University (CN)
- Putian University (CN)
Publication Details
- Journal
- Luminescence
- Published
- 2025-11-01
- DOI
- https://doi.org/10.1002/bio.70370
- Citations
- 1
- Primary Topic
- Luminescence Properties of Advanced Materials
- Type
- article
- Field-Weighted Citation Impact
- 0.52