Fabrication and luminescent properties of Ce:LaAlO3 translucent ceramics

作者：Lu, Qing; Yang, Qiuhong^*; Wang, Yonggang; Duan, Qizhen; Yuan, Ye; Cen, Jiang

来源：Optical Materials, 2015, 42: 35-38.

DOI：10.1016/j.optmat.2014.12.015

• Ce3+:LaAlO3 translucent ceramics
• Excitation spectrum
• Fluorescence spectrum
• Radioluminescence

Ce3+ doped LaAlO3 translucent ceramics were fabricated with solid-state reaction method and sintered in vacuum condition. LaAlO3 single phase was formed at 1200 degrees C. Their microstructures were observed and luminescent properties were investigated. The average grain size increases with the increase of sintering temperature. A dense and pore-free microstructure is displayed at 1700 degrees C. A band to band absorption of LaAlO3 host is round 220 nm. Three excitation peaks at 249, 317 and 354 nm were observed in the Ce3+:LaAlO3 ceramics, they were attributed to the 4f-5d transition of Ce3+ ions. The scintillation properties were investigated by X-ray excited radioluminescence in Ce3+:LaAlO3 ceramics and the emission peak is 428 nm.

• 出版日期2015-4
• 单位上海大学