Preparation and After-Treatment of BaMgAl10 O17 ：Mn^2＋

INTRODUCTION The properties of phosphor usedin a plasma dis-play panel (PDP) affect the performance of the PDP(Okazaki et al .,2000 ; Rao and Devine ,2000) . Theluminescent properties of the phosphor are decided bythe morphology ,particle size and size distribution ofthe powder ,sothe requirements for the powder mor-phology are high in a color PDP which belongs to ahigh resolution display apparatus (I m et al .,2005 ;Yang et al ., 2005) . Studies have shown that withsmall particle si…

Preparation and After-Treatment of BaMgAl10O17: Mn2+

BaMgAl_(10)O_(17):Mn~(2 ) green phosphor was prepared by high temperature solid state reaction and the optimal chemical formula is Ba_(0.85)MgMn_(0.15)Al_(11.993)B_(0.007)O_(19). The influences of milling and ultrasonic-dispersal on the luminescent properties, granularity and appearance of the phosphor were investigated, and the green phosphor with fine grain and uniform dispersion to be adapted to plasma display panels was obtained. A Hitachi F-4500 fluorescence spectrophotometer was used to measure the luminescent performance of the phosphor, and the vacuum ultra violet (VUV) fluorescence spectroradiometric system (Zhejiang University Sensing Instruments Co., Ltd.) was used to measure the luminescent performance under 147 nm excitation. A scanning electron microscope (SEM) was used to identify the size and shape of the particles. X-ray diffraction (XRD) was used to confirm its crystalline structure. According to this study, the optimal after-treatment processes were as follows: milling time 5 min, milling medium 15% C_2H_5OH, dispersal time 90 min and dispersal medium 15% C_2H_5OH.