Luminescence and crystallinity enhancement using nano-oxide

被引：5

作者：

Chang, Horng-Yi ^{[1
]}

Wang, Yuh-Ruey ^{[2
]}

Wu, Mei-Lun ^{[2
]}

Lin, Li-Jiaun ^{[3
]}

Tsai, Ling-Na ^{[3
]}

Cheng, Syh-Yuh ^{[4
]}

机构：

[1] Natl Taiwan Ocean Univ, Dept Marine Engn, Chilung 20224, Taiwan

[2] Natl Taipei Univ Technol, Dept Mat & Minerals Resources Engn, Taipei 106, Taiwan

[3] Ind Technol Res Inst, Microstruct & Characterizat Analysis Lab, Mat & Chem Res Labs, Chutung 31060, Taiwan

[4] Ind Technol Res Inst, Ceram Microengn Lab, Mat & Chem Res Labs, Chutung 31060, Taiwan

来源：

MATERIALS CHEMISTRY AND PHYSICS | 2008年 / 112卷 / 02期

关键词：

SrTiO3 oxides phosphor; Cathodoluminescence; Hydrothermal; Nano-crystallite;

D O I：

10.1016/j.matchemphys.2008.05.092

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The seeded nano-TiO2 particles in the hydrothermal (HT) solution assist phosphor crystallite nucleation and growth, facilitate formation of cubic grain shape, but limit grain growth during post-annealing so as to strongly enhance the cathodoluminescence (CL) intensity. Nano-crystallites of SrTiO3:Pr, Al phosphors approximately 80 nm with specific shape are successfully obtained and red cathodoluminescence is easily excited at low accelerating voltage of I W The obtained phosphors after annealing at 1000 degrees C 1 h(-1) exhibit the highest CL intensity than those obtained under other annealing conditions and those direct-pyrolyzed phosphors as well as mixed-oxide (MO) phosphors having composition similar to hydrothermal ones. The smaller phosphor crystal possesses larger surface and homogeneous activators distribution to facilitate the efficient excitation of low-energy electron bombardment of 1 keV. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：607 / 611

页数：5

共 23 条

[1] Controlling interface characteristics by adjusting core-shell structure [J].