Y2Q1 :Eu2+ red phosphors were synthesized by (our methods (solid-state, sol-gel, co-precipitation and hydrothermal) respectively. Structure, morphology and photoluminescence properties (PL) of the samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and fluorescence spectrophotometer, respectively. Results showed that the phase of samples were pure. They all could be effectively excited by the ne?r-UV irradiation (25δ nm) and emit red light at 612 nm due to the forced e-lectric dipole 5D0→7Fg ransitions on Eu3+. When monitoring the emission at 612 nm, the excitation spectrum of Y2O3 :Eu2+ exhibits a wide band in the UV region centered at around 256 nm, which are ascribed to Ugand-to-Eu3+ charge transfer transitions. And the fluorescence intensity of Y2O3:Eu3+ red phosphors synthesized by three wet chemical methods (sol-gel, co-precipitation and hydrothermal) were stronger than solid-state method.%采用固相法、溶胶-凝胶法.共沉淀法和水热法4种实验方法,分别制得Y2O3:Eu3+红色荧光粉,并对所制得的样品进行了XRD.SEM以及荧光光谱等表征.结果表明:所制得的Y2O3:Eu3+样品均为纯的立方晶相,都能够被256 nm的紫外光激发,在612 m处发出强烈的红色荧光,对应于Eu3+的5D0→7F2电偶极跃迁,当检测波长为512 nm时,4种实验方法制得的荧光粉体均在256 nm附近出现较明显的激发峰,该处的激发峰对应于从O2-的2p轨道到Eu3+的4f轨道的电荷转移跃迁.且3种湿化学方法(溶胶-凝胶法、共沉淀法和水热法)的发光强度强于固相法.
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