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Cs2MnCl4:Eu2+: A Near-Violet Light-Triggered Single-Component White Light Emitter
Jingshan Hou1, Jianghua Wu1,2, Yongzheng Fang1
1School of Materials Science and Engineering, Shanghai Institute of Technology, Shanghai 201418, P. R. China.
ACS Applied Materials & Interfaces
|June 3, 2024
Summary
Researchers developed a new single-component white-light material, Cs2MnCl4:Eu2+, for efficient and eye-friendly phosphor-converted white light-emitting diodes (pc-WLEDs). This novel material offers a promising pathway for safer, high-quality illumination applications.
Area of Science:
- Materials Science
- Solid-State Chemistry
- Luminescence
Background:
- Single-component white-light emitters are crucial for cost-effective phosphor-converted white light-emitting diodes (pc-WLEDs).
- Developing efficient and safe materials for pc-WLEDs is an ongoing challenge.
Purpose of the Study:
- To report a novel single-component white-light-emitting material, Cs2MnCl4:Eu2+.
- To investigate its potential for eye-friendly pc-WLED applications.
Main Methods:
- Synthesized Cs2MnCl4:Eu2+ using a dilution-sensitization strategy.
- Characterized its photoluminescence properties under near-ultraviolet excitation.
- Fabricated a pc-WLED device using the synthesized phosphor.
Main Results:
- Achieved white light emission through dual luminescence from Eu2+ (blue) and Mn2+ (yellow).
- Obtained a high photoluminescence quantum yield of 66% at 404 nm excitation.
- Fabricated pc-WLEDs with favorable color coordinates (0.3294, 0.2746) and a high color rendering index (82.3).
Conclusions:
- Cs2MnCl4:Eu2+ is a promising single-component white-light phosphor for pc-WLEDs.
- The developed material offers potential for health-conscious illumination by reducing blue light hazards.
- This work establishes a new route for designing single-component white light sources based on Mn-based halides.
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