＜正＞Fluorene derivatives have been the star-molecules in the organic luminescent materials as well as one of th...
Mei-Qin Zha,Yue Bing and Xing Li~* State Key Laboratory Base of Novel Functional Materials and Preparation Science,Faculty of Materials Science and Chemical Engineering,Ningbo University,Ningbo,Zhejiang 315211,P.R.China.
A novel technique for YAG:Ln(Ln=Eu,Ce) phosphor powder synthesis with a nanocrystalline structure was developed.Nanocrystalline YAG:Ln powder was prepared by an ultrasonic atomization and co-precipitation method using a mixture solution of ammonium hydroxide(NH3·H2O) and ammonium hydrogen carbonate(NH4HCO3) as precipitant.The as-prepared nano-powders were characterized by X-ray diffraction(XRD),scanning electron microscopy(SEM),and fluorescence spectrometer.The obtained phosphor powders were homogenous and in size of 50-70 nm.The results demonstrated that by using ultrasonic atomization and co-precipitation process,we could synthesize a good quality YAG:Ln(Ln=Eu,Ce) phosphor powder that had many potential applications.
