Synthesis of High-Performance YAG:Ce Phosphor Powder with Low Sintering Temperature and YAG:Ce-Doped Bi-B Glass by a One-Step Method

Ce-doped yttrium aluminum garnet (Ce:YAG) phosphor powder was synthesized with a precursor reaction at room temperature. The YAG phase appeared after sintering the precursor powder at 800°C, and the intermediate phase disappeared when the annealing temperature was increased to 1000°C. The morphology...

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Bibliographic Details
Published in:Journal of electronic materials 2024-05, Vol.53 (7), p.3713-3722
Main Authors: Xia, Ruihao, Zheng, Caiguo, Zhang, Song, Qiu, Rong, Yi, Zao, Tang, Yongjiang, Zheng, Fusheng
Format: Article
Language:English
Subjects:
Aluminum
Annealing
Bismuth
Cerium oxides
Characterization and Evaluation of Materials
Chemicals
Chemistry and Materials Science
Efficiency
Electronics and Microelectronics
Grain size
Instrumentation
Light emitting diodes
Materials Science
Optical and Electronic Materials
Optical properties
Original Research Article
Phosphors
Precursors
Room temperature
Sintering
Sintering (powder metallurgy)
Sol-gel processes
Solid State Physics
Solvents
Spectral emittance
Temperature
White light
Yttrium-aluminum garnet
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Summary:Ce-doped yttrium aluminum garnet (Ce:YAG) phosphor powder was synthesized with a precursor reaction at room temperature. The YAG phase appeared after sintering the precursor powder at 800°C, and the intermediate phase disappeared when the annealing temperature was increased to 1000°C. The morphology of Ce:YAG particles presented a spherical shape or a connected body and a minimum average grain size of about 41.6 nm. Using this improved sol–gel method, 10 at.% Ce-doped YAG with a high color rendering index was prepared, and cerium dioxide caused by concentration quenching was not found in the sample annealed at 900°C. We utilized the powder to prepare a white light-emitting diode (LED) device, and the spectral data showed a good luminous effect. In addition, by utilizing precursor powders (instead of phosphors), we prepared YAG:Ce/Eu-doped Bi-B glass via a one-step method and briefly analyzed its optical properties.
ISSN:0361-5235
1543-186X
DOI:10.1007/s11664-024-11153-2