| 紫外激发蓝色荧光粉Sr2-x-yB5O9Cl:xEu2+,yTb3+的合成和发光性能 |
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| 引用本文： | 豆喜华,赵韦人,宋恩海,周国雄,易春雨,周民康.紫外激发蓝色荧光粉Sr2-x-yB5O9Cl:xEu2+,yTb3+的合成和发光性能[J].材料研究学报,2012(1):96-100. |
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| 作者姓名： | 豆喜华 赵韦人 宋恩海 周国雄 易春雨 周民康 |
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| 作者单位： | 广东工业大学物理与光电工程学院 |
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| 基金项目： | 广东省教育部产学研结合基金2010B090400021资助项目~~ |
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| 摘 要： | 采用高温固相反应法合成Sr2-x-yB5O9Cl:xEu2+,yTb3+蓝色荧光粉。用X射线衍射表征材料的晶体结构、用荧光光谱仪测定Eu2+和Tb3+的掺杂浓度,研究了助溶剂H3BO3过量浓度和反应温度对荧光粉发光性质的影响。结果表明,单掺杂Eu2+时,其浓度猝灭机理为电偶极-电偶极交互作用机制,浓度猝灭临界距离为RC=1.71 nm。在紫外（230-410 nm）波段有强而宽的吸收带,表明此粉是一种近紫外白光LED用的蓝色荧光粉。
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| 关 键 词： | 无机非金属材料 白光LED 荧光粉 紫外激发 |
Synthesis of Blue Phosphor Sr2-x-yB5O9Cl:xEu2+,yTb3+ and Luminescence Properties Under Ultraviolet Excitation |
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| DOU Xihua ZHAO Weiren SONG Enhai ZHOU Guoxiong YI Chunyu ZHOU Minkang.Synthesis of Blue Phosphor Sr2-x-yB5O9Cl:xEu2+,yTb3+ and Luminescence Properties Under Ultraviolet Excitation[J].Chinese Journal of Materials Research,2012(1):96-100. |
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| Authors: | DOU Xihua ZHAO Weiren SONG Enhai ZHOU Guoxiong YI Chunyu ZHOU Minkang |
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| Affiliation: | DOU Xihua ZHAO Weiren(**) SONG Enhai ZHOU Guoxiong YI Chunyu ZHOU Minkang (School of Physics & Optoelectronic Engineering,Guangdong University of Technology,Guangdong 510006) |
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| Abstract: | Sr2-x-yB5O9Cl:xEu2+,yTb3+ blue phosphors were synthesized by solid-state reaction method.The crystal structure was analyzed,and the factors affected the PL intensity of Sr2B5O9Cl phosphors were investigated.The optimal conditions to obtain the blue emitting phosphor are 8%（molar fraction） Eu2+ concentration,8%Tb3+ concentration,30%excess of flux H3BO3 and 900℃reaction temperature;For single-doped Eu2+,the concentration quenching mechanism is electric dipole-electric dipole interaction mechanism and the concentration quenching critical distance is about RC=1.71 nm; Furthermost,there is a strong absorption in the region of 230-410 nm. |
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| Keywords: | inorganic non-metallic materials white LED phosphor ultraviolet excitation |
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