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Updated: Jun 6, 2025
07:03
Low-energy Cathodoluminescence for OxyNitride Phosphors
Published on: November 15, 2016
10.6K
Broadband emission in alkali halides triggered by Sb3+ doping
Yanyan Li1,2, Mircea Cotlet3, Ido Hadar4
1Department of Chemical and Environmental Engineering, Yale University, 9 Hillhouse Avenue, New Haven, CT 06520, USA. peijun.guo@yale.edu.
Chemical Communications (Cambridge, England)
|November 27, 2024
Summary
New antimony-doped alkali chlorides like sodium chloride (NaCl) exhibit broadband visible light emission. These lead-free materials show potential for developing advanced phosphors with long-lasting luminescence.
Area of Science:
- Solid State Chemistry
- Materials Science
- Luminescence
Background:
- Alkali halides are widely studied for their optical properties.
- Development of efficient and stable phosphors is crucial for lighting and display technologies.
- There is a growing demand for lead-free luminescent materials due to environmental concerns.
Purpose of the Study:
- To investigate the photoluminescence properties of antimony (Sb3+)-doped alkali chlorides.
- To explore the potential of these materials as lead-free phosphors.
- To characterize the emission spectra and luminescence lifetimes.
Main Methods:
- Synthesis of doped alkali chlorides (NaCl, KCl, RbCl) with Sb3+.
- Photoluminescence spectroscopy to determine emission peaks and spectral profiles.
- Time-resolved luminescence measurements to assess decay times.
Main Results:
- Broadband emission was achieved in Sb3+-doped NaCl, KCl, and RbCl.
- Photoluminescence peaks were observed in the visible range (536-574 nm).
- Long luminescence lifetimes in the microsecond range were measured for these phosphors.
Conclusions:
- Sb3+-doped alkali chlorides are promising candidates for efficient visible-light-emitting phosphors.
- The observed broadband emission and long lifetimes suggest potential applications in solid-state lighting.
- These findings contribute to the development of novel, environmentally friendly lead-free phosphor materials.
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