A near-infrared luminescent material which can be excited by ambient light, and a preparation method and application thereof
By preparing A2BaGa4-xCO12:xCr3+ near-infrared luminescent materials, the dependence on a dedicated excitation light source was solved, and efficient and stable near-infrared luminescence under ambient light was achieved, which is suitable for information encryption and biological monitoring.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- XINJIANG NORMAL UNIVERSITY
- Filing Date
- 2026-05-06
- Publication Date
- 2026-07-17
AI Technical Summary
Existing near-infrared luminescent materials are highly dependent on dedicated excitation light sources, making it difficult to meet the needs for long-term, dynamic, and non-invasive real-time monitoring, and they also pose phototoxicity risks in biomedicine.
A near-infrared luminescent material that can be excited by ambient light was developed. The chemical structure is A2BaGa4-xCO12:xCr3+. By replacing the A-site ion with Lu, La or Gd and the C-site ion with Si or Ge, and controlling the doping ratio x between 0.01 and 1, a garnet structure was formed, achieving high fluorescence quantum yield and excellent thermal and chemical stability.
The material can be excited under ambient light of 400~700nm without the need for a dedicated light source, has an internal quantum yield of 99%, and possesses high thermal and chemical stability, making it suitable for information encryption and biological monitoring.
Smart Images
Figure CN122405271A_ABST