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Updated: Jun 4, 2026
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Low-energy Cathodoluminescence for (Oxy)Nitride Phosphors
Published on: November 15, 2016
Solid-state combinatorial screening of (Sr,Ca,Ba, Mg)₂Si₅N₈:Eu(2+) phosphors
Bonghyun Lee1, Sangjun Lee, Hyung Gon Jeong
1Department of Printed Electronics, World Class University Program, Sunchon National University, Sunchon, Chonnam, Republic of Korea.
ACS Combinatorial Science
|February 1, 2011
Summary
Researchers developed a novel solid-state synthesis method to create new alkaline earth (AE) silicon nitride phosphors. This technique enabled precise control over photoluminescent properties and composition for AE(2)Si(5)N(8):Eu(2+) materials.
Area of Science:
- Materials Science
- Solid-state Chemistry
- Luminescence
Background:
- Ternary nitride phosphors are crucial for lighting applications.
- Conventional liquid-based synthesis methods are unsuitable for pure nitride systems.
- High-throughput experimentation is needed for efficient phosphor discovery.
Purpose of the Study:
- To develop a novel solid-state combinatorial chemistry technique for synthesizing and screening ternary nitride phosphors.
- To investigate the photoluminescent (PL) properties of four different AE(2)Si(5)N(8):Eu(2+) phosphor systems.
- To establish a quantitative relationship between phosphor composition and PL characteristics.
Main Methods:
- Employed a solid-state combinatorial chemistry technique using powder dispensing.
- Synthesized four ternary phosphor systems: (Sr,Ca,Ba)(2)Si(5)N(8):Eu(2+), (Sr,Ca,Mg)(2)Si(5)N(8):Eu(2+), (Sr,Mg,Ba)(2)Si(5)N(8):Eu(2+), and (Ca,Ba,Mg)(2)Si(5)N(8):Eu(2+).
- Developed well-defined ternary combinatorial libraries without skipped compositions.
Main Results:
- Successfully synthesized four distinct ternary phosphor libraries.
- Achieved precise control over photoluminescent intensity and color chromaticity.
- Established a quantitative correlation between the composition of AE(2)Si(5)N(8):Eu(2+) phosphors and their PL properties.
Conclusions:
- The developed solid-state high-throughput powder-dispensing technique is effective for synthesizing nitride-based phosphors.
- This method allows for efficient screening and optimization of phosphor compositions for desired photoluminescent characteristics.
- The study provides a foundation for designing novel phosphors with tailored properties for advanced lighting applications.
