Structure and Photoluminescence of ASnO3(A=Ca, Sr and Ba)∶Eu Nanocrystalline
FU Xiao-yan1, NIU Shu-yun1*, ZHANG Hong-wu2, XIN Qin2
1. College of Chemistry and Chemical Engineering of Liaoning Normal University, Dalian 116029, China 2.Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
Abstract：The present paper reports the photoluminescence properties of nanocrytalline ASnO3(A=Ca, Sr and Ba)∶1%Eu phosphor synthesized by the Pechini-type sol-gel method. The powder was characterized by X-ray diffraction(XRD), UV-Vis absorption spectra, transmission electron microscopy (TEM) and photoluminescence measurements. The experimental results show that BaSnO3 has the ideal cubic peroskite structure, while SrSnO3 and CaSnO3 are both distorted from cubic symmetry by an octahedral tilting distortion. The difference of structure in induced the different spectral properties of ASnO3:∶1%Eu. On the other hand, when A2+ changes from Ca2+ to Ba2+, the luminescence intensity becomes weak. So CaSnO3∶1%Eu seems to be a good candidate for new phosphors.
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