Preparation of Zn2SiO4:Mn phosphor through spray pyrolysis
Date Issued
2014
Date
2014
Author(s)
Chuang, Chi-Kai
Abstract
In order to apply light emitting diode (LED) for lighting, the phosphor for LED lighting is essential. In the present study, a spray pyrolysis method was developed to prepare phosphor particles. After calcining at elevated temperatures, spherical particles with size around submicron to micron are produced. The transition ion, manganese, is used as the activator. The characteristics of the particles with different Mn content after calcination at different temperature are determined. The relations between the luminescence property and crystallinity, phase, microstructure, Mn conent of the prepared particles are established. The luminescence efficiency shows strong
connection with crystallinity and phase. The Mn content in the host lattice also affects the luminescence such as decay time, intensity, and wavelength. For comparison
purpose, the particles was also prepared by solid state reaction and compared with the powder prepared by spray pyrolysis method . The particles prepared by these two
methods show similar luminescence efficiency.
Subjects
噴霧熱裂解法
螢光粉
白光發光二極體
Zn2SiO4:Mn
鍛燒
發光效率
Type
thesis
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