青岛科技大学主页平台管理系统 chenkezheng--Home-- Photoluminescence properties of Y3Al5O12:Eu nanocrystallites prepared by co-precipitation method using a mixed precipitator of NH4HCO3 and NH3&middotH2O

陈克正

Professor

Supervisor of Doctorate Candidates

Supervisor of Master's Candidates

Date of Birth:1965-10-27

Team member

Paper Publications

Current position: Home > Scientific Research > Paper Publications

Photoluminescence properties of Y3Al5O12:Eu nanocrystallites prepared by co-precipitation method using a mixed precipitator of NH4HCO3 and NH3&middotH2O

Release time:2023-10-19 Hits:

Key Words:

Abstract:Europium-doped yttrium aluminum garnet (Y3Al5O12:Eu, YAG:Eu) nanocrystallites were prepared by calcining the precursors obtained via a co-precipitation method using a mixed solution of NH4HCO3 and NH3&middotH2O as the precipitator. The results of XRD, FTIR and thermal analysis showed that phase-pure YAG:Eu without any other phases was obtained at 900 °C. TEM results indicated that the particle sizes are 50-100 nm. YAG:Eu nanocrystallites showed four emission bands ascribed to 5D0 &rarr 7F1 transition (592 and 597 nm) and 5D0 &rarr 7F2 transition (611 and 633 nm) of Eu3+, respectively. The intensity of the magnetic dipole transition (5D0 &rarr 7F1) is stronger than that of the electric dipole transition (5D0 &rarr 7F2). The influence of the precipitators with different molar ratios of NH4HCO3 to NH3&middotH2O on the thermal properties of the as-prepared precursors and luminescent properties of the resulting YAG:Eu nanocrystallites was also investigated. © 2009 Elsevier B.V. All rights reserved.

Volume:166

Issue:1

Translation or Not:no

Pre One:基于研究性学习模式的材料物理专业主干课程群教学的改革与设计

Next One:Preparation and characterization of ZnO hollow micro-spheres with excellent property of blue emission