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Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/26482

Title: Luminescence and Crystallinity Enhancement using Nano-oxide
Authors: Horng-Yi Chang;Yuh-Ruey Wang;Mei-Lun Wu;Li-Jiaun Lin;Ling-Na Tsai;Syh-Yuh Cheng
Contributors: 國立臺灣海洋大學:輪機工程學系
Keywords: SrTiO3 oxides phosphor;Cathodoluminescence;Hydrothermal;Nano-crystallite
Date: 2008-12-01
Issue Date: 2011-10-20T08:36:03Z
Publisher: Materials Chemistry and Physics
Abstract: Abstract: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 1 kV. The obtained phosphors after annealing at 1000 °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.
Relation: 112(2), pp.607–611
URI: http://ntour.ntou.edu.tw/handle/987654321/26482
Appears in Collections:[輪機工程學系] 期刊論文

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