Affiliation:
1. College of Chemical Engineering Zhejiang University of Technology Hangzhou China
2. Research Center of Analysis and Measurement Zhejiang University of Technology Hangzhou China
3. Institute of Semiconductors Guangdong Academy of Sciences Guangzhou China
4. School of Applied Physics and Materials Wuyi University Jiangmen Guangdong China
5. Laboratory of Crystal Physics Kirensky Institute of Physics Federal Research Center KSC SB RAS Krasnoyarsk Russia
Abstract
AbstractDuring pursuing high color rendering index for full‐color‐emitting phosphor, low quantum efficiency (QE) is usually accompanying. We intend to elevate the luminescence efficiency when realizing a solar‐like spectra distribution, by constructing apatite structure oxynitride, inheriting high covalence and rigidity from oxynitride, and suitable multiple cation sites from oxyapatite compounds. Full‐color‐emitting apatite structure oxynitride phosphor (Mg,Y)5Si3(O,N)13:Ce3+,Mn2+ has been prepared, and the crystal sites’ occupancies of activators in this host were favorable for white emission. (Mg,Y)5Si3(O,N)13:Ce3+,Mn2+ phosphor shows whole visible light with emission wavelength ranging from 370 to 750 nm, matching the spectra of sunlight quite well. The fabricated white light‐emitting diode lamp demonstrated the distinctive overall performance of QE and chromaticity properties (Ra and R9). Furthermore, correlated color temperature is tunable from cool nature to warm white. The obtained lamp possesses the feature of less blue light hazard and high saturation of red degree, compared with the commercial YAG‐based lamp.
Funder
National Natural Science Foundation of China
Subject
Materials Chemistry,Ceramics and Composites
Cited by
1 articles.
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