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以稀土氧化物、硝酸铝和硼酸为原料,用高温球磨法制备红色荧光粉YAl_3(BO_3)_4:Eu~(3+),研究其结构、形貌和发光性能。结果表明,在700℃高温球磨制备YAl_3(BO_3)_4:Eu~(3+)荧光粉,煅烧温度比硝酸盐分解法降低200℃,比高温固相法降低500℃;制备出的荧光粉粒度分布均匀,晶粒近似呈球状,尺寸为纳米级;在394 nm的紫外光激发下YAl_3(BO_3)_4:Eu~(3+)荧光粉具有较好的发光性能,发射光以波长为618 nm的红光(Eu~(3+)离子~5D_0→~7F_2跃迁)为主;Eu~(3+)的最佳掺杂量为15%。
The red phosphor YAl_3 (BO_3) _4: Eu ~ (3+) was prepared by high temperature ball milling with rare earth oxides, aluminum nitrate and boric acid as raw materials, and its structure, morphology and luminescence properties were studied. The results show that the calcination temperature of YAl_3 (BO_3) _4: Eu ~ (3+) phosphor powder is decreased by 200 ℃ compared with nitrate decomposition method and 500 ℃ lower than the high temperature solid state method by ball milling at 700 ℃. The prepared phosphor particle size distribution The crystal size of the YAl_3 (BO_3) _4: Eu ~ (3+) phosphor is very good at the 394 nm UV excitation. The emission of the Y_ (BO_3) _4: Eu ~ The red (Eu ~ (3 +) ions ~ 5D_0 → ~ 7F_2 transitions) are dominant. The optimum doping amount of Eu ~ (3+) is 15%.