| 基于紫外或蓝光LED激发的Eu3+和Bi3+共掺杂LaMgB5O10红色荧光粉 |
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| 引用本文： | 张金苏,梁左秋,仲海洋,孙佳石,程丽红,李香萍,陈宝玖.基于紫外或蓝光LED激发的Eu3+和Bi3+共掺杂LaMgB5O10红色荧光粉[J].发光学报,2011,32(12):1210-1215. |
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| 作者姓名： | 张金苏 梁左秋 仲海洋 孙佳石 程丽红 李香萍 陈宝玖 |
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| 作者单位： | 大连海事大学 物理系, 辽宁 大连 111026 |
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| 基金项目： | 国家自然科学基金(61078061,11104023,11104024);中央高校基本科研业务费专项基金(2011JC037,2011JC036,2011ZD032,2011ZD033)资助项目 |
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| 摘 要： | 采用固相法合成了Eu3+和Bi3共掺杂的LaMgB5O10红色荧光粉,在紫外或蓝光激发下,样品的红光强度随着Bi2O3的增加而增强.利用X射线衍射对样品的结构进行了分析,结果表明,掺入Bi2O3后,样品的结晶度更好.根据Judd-Ofelt理论计算,得到样品的内量子效率不随掺杂剂的改变而变化,约为43％.在394nm激...
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| 关 键 词： | LaMgB5O10 Judd-Ofelt理论 荧光增强 |
| 收稿时间： | 2011-09-01 |
Enhanced Red Photoluminescence in Eu3+ and Bi3+ Codoped LaMgB5O10 Based on UV/Blue LEDs Excitation |
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| ZHANG Jin-su,LIANG Zuo-qui,ZHONG Hai-yang,SUN Jia-shi,CHENG Li-hong,LI Xiang-ping,CHEN Bao-jiu.Enhanced Red Photoluminescence in Eu3+ and Bi3+ Codoped LaMgB5O10 Based on UV/Blue LEDs Excitation[J].Chinese Journal of Luminescence,2011,32(12):1210-1215. |
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| Authors: | ZHANG Jin-su LIANG Zuo-qui ZHONG Hai-yang SUN Jia-shi CHENG Li-hong LI Xiang-ping CHEN Bao-jiu |
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| Institution: | Department of Physics,Dalian Maritime University, Dalian 116026, China |
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| Abstract: | Red phosphors of Eu3+ and Bi3+ single- and double- doped LaMgB5O10 have been synthesized by a solid-state reaction. The red emission intensities were enhanced with the increase of Bi2O3 content. The crystal structures were analyzed using the X-ray diffraction. It indicated that the crystallization is better in the codoped samples than the Eu3+ monodoped sample. According to the results calculated by the Judd-Ofelt theory, the internal quantum efficiencies keep a constant value of about 43%. Moreover, red emission intensity increase 50% in the codoped sample comparison with the Eu3+ monodoped one under 394 nm excitation. It was confirmed that the enhanced red photoluminescence is due to the increase of Eu3+absorption strengths. |
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| Keywords: | LaMgB5O10 Judd-ofelt theory enhanced red photoluminescence |
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