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本文首次用微波辐射法(MicrowaveRadiationMethod,简称MRM)合成了纯的SrS基质和SrS∶Ce3+,K+蓝色荧光化合物,用XRD测定了它们的晶体结构,系统考察了不同浓度的Ce3+离子对发光性能的影响。实验发现,微波辐射能使Ce3+在SrS基质晶格中均匀扩散,并能提高激活剂的掺入量,阻止Ce3+离子的簇集,延缓Ce3+离子对的形成,从而能得到晶相纯、粒度均匀和发光效率高的SrS∶Ce3+,K+蓝色荧光体。
In this paper, pure SrS and SrS: Ce3 +, K + blue fluorescent compounds were synthesized by Microwave Radiation Method (MRM) for the first time. Their crystal structures were determined by XRD. The effects of different concentrations of Ce3 + ions on the luminescent properties influences. It is found that the microwave radiation can make Ce3 + diffuse evenly in the lattice of SrS matrix and can increase the incorporation of activator, prevent the clustering of Ce3 + ions and delay the formation of Ce3 + ion pair, so as to obtain crystal phase pure and uniform particle size And SrS: Ce3 +, K + blue phosphors with high luminous efficiency.