Ambient-stable Mg<sup>2+</sup>-doped Cs<sub>3</sub>Cu<sub>2</sub>I<sub>5</sub> nanocrystals with enhanced photoluminescence for color conversion blue LEDs
We successfully synthesized Mg<sup>2+</sup>-doped Cs<sub>3</sub>Cu<sub>2</sub>I<sub>5</sub> nanocrystals (NCs) under ambient conditions. The 10% Mg<sup>2+</sup>-doped Cs<sub>3</sub>Cu<sub>2</sub>I<sub>5</sub> NCs exhibit significantly enhanced optical properties, achieving a photoluminescence quantum yield (PLQY) of 25.80% and a narrow emission full width at half maximum (FWHM) of 78 nm. The 10% Mg<sup>2+</sup>-doped NCs also exhibited improved thermal and water stability, retaining 67% of their initial photoluminescence (PL) intensity when heated from 25°C to 100°C and maintaining blue light emission after 30 min in aqueous environments. When integrated into a color conversion LED, these NCs achieved simultaneous improvements in emission characteristics, showing a narrowed FWHM (81 nm) and higher emission efficiency compared to undoped counterparts.
Authors
- Chengxu Lin
- Xuming Zhang (ORCID: https://orcid.org/0000-0002-9326-5547)
- Dongdong Yan (ORCID: https://orcid.org/0009-0001-1788-4426)
- Ronglei Fan (ORCID: https://orcid.org/0000-0003-1823-5345)
- Yang Tang (ORCID: https://orcid.org/0000-0001-5490-3385)
- Weixiang Ye (ORCID: https://orcid.org/0000-0002-4621-785X)
- Xiaoyu Wang (ORCID: https://orcid.org/0000-0002-8641-2430)
- Yongfeng Liu (ORCID: https://orcid.org/0000-0002-3556-9593)
- Hao Xie (ORCID: https://orcid.org/0000-0001-5981-1666)
Institutions
- Hainan University (CN)
- Yangzhou University (CN)
Publication Details
- Journal
- Optics Letters
- Published
- 2025-05-19
- DOI
- https://doi.org/10.1364/ol.560908
- Citations
- 2
- Primary Topic
- Perovskite Materials and Applications
- Type
- article
- Field-Weighted Citation Impact
- 1.46
Funders
- National Natural Science Foundation of China
- Natural Science Foundation of Jiangsu Province
- Natural Science Foundation of Hainan Province