A Mn<sup>4+</sup>-Doped Far-Red-Emitting Phosphor toward Full-Spectrum Lighting
Mn<sup>4+</sup>-doped oxide red phosphors exhibit significant potential in full-spectrum lighting and plant growth lighting. Far-red emitting CaLuAlO<sub>4</sub>:Mn<sup>4+</sup> phosphor was obtained by a high-temperature solid-phase method. In this structure, Mn<sup>4+</sup> occupies the position of [AlO<sub>6</sub>], and exhibits two broad excitation bands in the 250-600 nm range. Upon 365 nm near-ultraviolet excitation, this phosphor exhibits far-red emission near 707 nm. Its internal quantum efficiency and absorptivity were measured to be 55.04% and 81.48%, respectively. CaLuAlO<sub>4</sub>:Mn<sup>4+</sup> can compensate for the far-red emission deficiency of WLEDs, attaining a low correlated color temperature (CCT = 3548 K) and a high color rendering index (<i>R</i><sub>a</sub> = 96.5). Plant growth experiments using packaged far-red LED verified its positive effects on plant growth. These results demonstrate the potential of CaLuAlO<sub>4</sub>:Mn<sup>4+</sup> red phosphors for applications in full-spectrum lighting and plant growth lighting.
Authors
- Hongpeng You (ORCID: https://orcid.org/0000-0003-2683-6896)
- Shuai Wei (ORCID: https://orcid.org/0000-0003-3051-2480)
- Zeyu Lyu (ORCID: https://orcid.org/0000-0002-4665-9658)
- Fang Guan (ORCID: https://orcid.org/0000-0002-9492-0072)
- Dashuai Sun
- Zheng Lu (ORCID: https://orcid.org/0000-0003-1368-8353)
- Xiaowei Zhang
- Chunchun Chen (ORCID: https://orcid.org/0009-0006-7073-735X)
Institutions
- University of Science and Technology of China (CN)
- Xiamen Institute of Rare-earth Materials (CN)
- Jiangxi Academy of Sciences (CN)
- Hunan Rare Earth Metal Material Research Institute (CN)
Publication Details
- Journal
- Inorganic Chemistry
- Published
- 2025-10-09
- DOI
- https://doi.org/10.1021/acs.inorgchem.5c03887
- Citations
- 2
- Primary Topic
- Luminescence Properties of Advanced Materials
- Type
- article
- Field-Weighted Citation Impact
- 1.04