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Updated: Jan 19, 2026
13:51
Synthesis of Core-shell Lanthanide-doped Upconversion Nanocrystals for Cellular Applications
Published on: November 10, 2017
15.8K
Full spectrum core-shell phosphors under ultraviolet excitation.
Hui Ding1, Haiming Qin2, Shaowei Feng2
1Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China. qinhaiming@nimte.ac.cn jjun@nimte.ac.cn jianghaochuan@nimte.ac.cn and University of Chinese Academy of Sciences, Beijing 100049, China.
Chemical Communications (Cambridge, England)
|September 24, 2019
Summary
Researchers developed novel core-shell phosphors (Ce/MgY4Si3O13:Ce-Y2O3:Eu) using a precipitation method. These phosphors emit broad-spectrum light and achieve high quantum efficiency, showing promise for advanced optical applications.
Area of Science:
- Materials Science
- Solid-State Chemistry
- Luminescence
Background:
- Developing efficient phosphors is crucial for advanced lighting and display technologies.
- Core-shell structures offer enhanced luminescence properties by controlling interfacial interactions.
Purpose of the Study:
- To synthesize and characterize novel Ce/MgY4Si3O13:Ce-Y2O3:Eu core-shell phosphors.
- To investigate the luminescent properties and quantum efficiency of the synthesized materials.
Main Methods:
- Urea homogeneous precipitation method for synthesizing core-shell structures.
- Photoluminescence spectroscopy to analyze emission spectra and excitation wavelengths.
- Quantum efficiency measurements.
Main Results:
- Successfully synthesized Ce/MgY4Si3O13:Ce-Y2O3:Eu core-shell phosphors.
- Observed broad emission from 340 nm to 700 nm under 330 nm excitation.
- Achieved a high internal quantum efficiency of up to 68%.
Conclusions:
- The designed core-shell phosphors exhibit excellent luminescence properties.
- The high quantum efficiency indicates potential for efficient light conversion applications.
- Urea precipitation is an effective method for creating these advanced phosphor materials.
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