| Bi3+掺杂对Sr2MgSi2O7∶Eu2+荧光粉的结构及发光性能的影响 |
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| 引用本文： | 章少华,江柳杨,张璟,谢冰.Bi3+掺杂对Sr2MgSi2O7∶Eu2+荧光粉的结构及发光性能的影响[J].发光学报,2012,33(8):824-827. |
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| 作者姓名： | 章少华 江柳杨 张璟 谢冰 |
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| 作者单位： | 1. 南昌大学 材料科学与工程学院, 江西 南昌 330031;2. 南昌大学 测试分析中心, 江西 南昌 330029 |
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| 基金项目： | 江西省科技厅(S00789)资助项目 |
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| 摘 要： | 采用溶胶-凝胶法在还原气氛下制备了Sr2MgSi2O7∶Eu2+,xBi3+(x=0,0.02,0.04,0.06,0.08,0.1)荧光粉,并用XRD、TG-DTA及激发与发射谱仪对样品的结构及发光性能进行了表征。结果发现:单掺杂Bi3+的Sr2MgSi2O7样品的发射光谱所用的材料的激发光谱为一主峰为286 nm的宽带谱,这是由于激发态时Bi3+的3P1→1S0电子能级跃迁而造成的;单掺杂Eu2+的Sr2MgSi2O7样品的发射光谱所用的材料的激发光谱为一主峰为358 nm的宽带谱,这是典型的Eu2+的4f65d1→4f7跃迁而引起的。当Bi3+离子掺杂到Sr2MgSi2O7∶Eu2+样品的摩尔分数为0.04时,样品的发射强度是未掺杂Bi3+离子样品的1.9倍。
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| 关 键 词： | Bi3+ Sr2MgSi2O7 溶胶-凝胶法 发光 |
| 收稿时间： | 2012/5/22 |
Effects of Bi3+ Concentration on Luminescent Properties of Sr2MgSi2O7:Eu2+ Phosphor |
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| ZHANG Shao-hua,JIANG Liu-yang,ZHANG Jing,XIE Bing.Effects of Bi3+ Concentration on Luminescent Properties of Sr2MgSi2O7:Eu2+ Phosphor[J].Chinese Journal of Luminescence,2012,33(8):824-827. |
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| Authors: | ZHANG Shao-hua JIANG Liu-yang ZHANG Jing XIE Bing |
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| Institution: | 1. School of Materials Science and Engineering, Nanchang University, Nanchang 330047, China;2. Center of Analysis and Testing, Nanchang University, Nanchang 330029, China |
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| Abstract: | Blue luminescent Sr2MgSi2O7∶Eu2+,xBi3+(x=0,0.02,0.04,0.06,0.08,0.1) powder phosphors have been successfully synthesized by sol-gel method.Their structure and luminescent properties were analyzed by XRD,DTA-TG,and PL spectra.Emission spectra of Sr2MgSi2O7∶Bi3+ powder phosphors with λex=286 nm(3P1→1S0) and Sr2MgSi2O7∶Eu2+,xBi3+(x=0,0.02,0.04,0.06,0.08,0.1) phosphors with λex=358 nm(4f 6 5d1→4f7) have been analyzed.Based on the emission performance of Sr2MgSi2O7∶Eu2+,xBi3+,the optimized Bi3+ mole fraction is 0.04.The luminescent intensity of the phosphor increases up to 1.9 times than that of phosphors without doping Bi3+,which due to the sensitization of Bi3+ to Eu2+. |
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| Keywords: | Bi3+ Sr2MgSi2O7 sol-gel method blue luminescence |
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