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Meeting Materials Science & Technology 2015
Symposium Ceramic Optical Materials
Presentation Title Praseodymium-doped SiAlON Red Phosphors Prepared by Polymer-derived Method
Author(s) Hui Yu, Quan Li, Xuan Cheng, Ying Zhang, Chaoyang Gong
On-Site Speaker (Planned) Xuan Cheng
Abstract Scope The red emission praseodymium (Pr)-doped SiAlON (SiAlON:Pr) and the Pr-doped silicon nitride (Si<sub>3</sub>N<sub>4</sub>:Pr) phosphors were prepared by a new and facile synthesis route via nitridating and calcinating a precursor formed by reacting polycarbosilane and Pr acetylacetonate with/without Al acetylacetonate. The effects of sintering temperatures and nominal ratios of Si/Pr on photoluminescent properties were examined. It was shown that the phases of α-Si<sub>3</sub>N<sub>4</sub> and β-Si3N4 coexisted, and two emission peaks at 566 nm and 610 nm were observed for Si<sub>3</sub>N<sub>4</sub>:Pr phosphor. For the SiAlON:Pr phosphor sintered at 1550 °C, the phases of β-SiAlON and Si<sub>2</sub>N<sub>2</sub>O were identified with two emission peaks at 566 nm and 610 nm. However, for SiAlON:Pr phosphors sintered above 1600 °C, only one emission peak at 623 nm was observed with a dominated β-SiAlON phase. The double-exponential photoluminescence behaviors were found for both Si<sub>3</sub>N<sub>4</sub>:Pr and SiAlON:Pr phosphors.
Proceedings Inclusion? Planned: MS&T all conference proceedings CD

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

Cladded Single Crystal Fibers
Creation of New Material Science on Optical Ceramics
Effects of Varied Heat Treatments on Precipitation of Alumina in Astoichiometric Magnesium Aluminate Spinel
Fabrication of Transparent Magnesium Aluminate Spinel Ceramics using Two Kinds of Spinel Powder with Different Particle Sizes
Fundamental Study in the Processing of Transparent Ceramics
Highly Transparent Polycrystalline YAG Ceramics for Optical Applications
Laser Oscillation of Lu-based Oxide Ceramics by Spark Plasma Sintering
Low Absorption Spinel Windows for High Energy Lasers
NMR Spectroscopy of Paramagnetic Doped Ceramics to Determine Site Occupancy and Distribution
Novel Glass and Glass Ceramic Scintillators for Gamma-ray and Neutron Detection
Polycrystalline Transparent Yttrium Aluminum Garnet for Optical Applications
Praseodymium-doped SiAlON Red Phosphors Prepared by Polymer-derived Method
Processes and Characterizations of Ceramic Optical Fibers
Spark Plasma Sintering of Transparent Ceramics and Unusual Grain Growth
Synthesis and Processing of Transparent Ceramic Scintillators for Nuclear Radiation Detection
The Role of Scattering and Absorption on the Optical Properties of Birefringent Polycrystalline Ceramics: Modeling and Experiments
Transparent Ceramic Scintillators
Transparent Magnesium Aluminate Spinel Prepared via Microfluidization and Aqueous Slip-casting
Transparent Spinel by Microwave Sintering

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