Ethylene diamine tetraacetic acid（EDTA） complexing sol-gel method was used to prepare Ce3＋ doped BaHfO3 nano-particles.The thermogravimetric-differential thermal analysis,X-ray diffraction,scanning electron microscopy,transmission electron microscopy,and fluorescence photometry were employed to analyze phase change,characteristics and spectra of specimens.Behaviors of solid solution was analyzed.Precursor was prepared by adding various amounts of glycol.Results show that after calci-nation at 900 ℃ for 2 h,the crystallization process of BaHfO3：Ce3＋ is completed.The particles are near-spherical with uniform granularity of about 30 nm.Ce3＋ is present evenly in BaHfO3 solid solution at a doping mole fraction（the same below） of 0.9%,and light band intensity of emission spectra reached a maximum.Concentration quenching occurs when Ce3＋ amount is above 0.9% and then the emission intensity decreases.
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