| 用于白光LED的Ca2BO3Cl:Eu2+发光特性研究 |
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| 引用本文： | 李盼来,徐征,赵谡玲,张福俊,张妍斐.用于白光LED的Ca2BO3Cl:Eu2+发光特性研究[J].光电子．激光,2012(10):1851-1855. |
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| 作者姓名： | 李盼来 徐征 赵谡玲 张福俊 张妍斐 |
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| 作者单位： | 北京交通大学光电子技术研究所发光与光信息技术教育部重点实验室;河北大学物理科学与技术学院;北京交通大学光电子技术研究所发光与光信息技术教育部重点实验室;北京交通大学光电子技术研究所发光与光信息技术教育部重点实验室;北京交通大学光电子技术研究所发光与光信息技术教育部重点实验室;北京交通大学光电子技术研究所发光与光信息技术教育部重点实验室 |
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| 基金项目： | 国家“973”计划(2010CB327704);国家自然科学基金(60978060、10974013);教育部新世纪优秀人才支持计划(NCET-10-0220);中央高校基本科研业务费专项资金(2012JBZ001);教育部博士点基金(20090009110027);北京市自然科学基金(1102028);北京交通大学基本科研业务费(2011YJS073);北京交通大学优秀博士生科技创新基金(48034)资助项目 |
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| 摘 要： | 采用高温固相法,制备了适于紫外-近紫外及蓝光激发,主峰位于573nm的Ca2BO3Cl:Eu2+黄色荧光粉。研究了Ce3+以及CaCl2和H3BO3用量对材料发光特性等的影响。结果表明,添加Ce3+,明显增强了Ca2BO3Cl:Eu2+材料在紫外-近紫外区的吸收,有效地提高了材料的发射强度;添加过量的CaCl2或H3BO3,均能提高Ca2BO3Cl:Eu2+材料的发射强度,最佳的CaCl2和H3BO3用量分别为过量5mol%和15mol%。将Ca2BO3Cl:Eu2+材料与460nm InGaN芯片组合,获得了白光发射,色坐标为(0.339,0.351)。
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| 关 键 词： | 白光发光二极管(LED) Ca2BO3Cl Eu CaCl2 H3BO3 Ce |
Luminescent properties of Ca2BO3Cl:Eu2+ phosphor for white LED |
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| LI Pan-lai,XU Zheng,ZHAO Su-ling,ZHANG Fu-jun and ZHANG Yan-fei.Luminescent properties of Ca2BO3Cl:Eu2+ phosphor for white LED[J].Journal of Optoelectronics·laser,2012(10):1851-1855. |
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| Authors: | LI Pan-lai XU Zheng ZHAO Su-ling ZHANG Fu-jun and ZHANG Yan-fei |
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| Institution: | Key Laboratory of Luminescence and Optical Information,Education Ministry of China,Institute of Optoelectronics Technology,Beijing Jiaotong University,Beijing 100044,China;College of Physics Science & Technology,Hebei University,Baoding 071002,China;Key Laboratory of Luminescence and Optical Information,Education Ministry of China,Institute of Optoelectronics Technology,Beijing Jiaotong University,Beijing 100044,China;Key Laboratory of Luminescence and Optical Information,Education Ministry of China,Institute of Optoelectronics Technology,Beijing Jiaotong University,Beijing 100044,China;Key Laboratory of Luminescence and Optical Information,Education Ministry of China,Institute of Optoelectronics Technology,Beijing Jiaotong University,Beijing 100044,China;Key Laboratory of Luminescence and Optical Information,Education Ministry of China,Institute of Optoelectronics Technology,Beijing Jiaotong University,Beijing 100044,China |
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| Abstract: | Ca2BO3Cl:Eu2+ yellow phosphor was synthesized by a high temperature solid-state reaction method,and it can be excited by ultraviolet-near ultraviolet and blue light irradiation.The final phase is investigated with the conventional X-ray diffraction(XRD).The spectral characteristics of the phosphor are studied by using a Hitachi F-4600 fluorescence spectrophotometer equipped with a 450 W Xe lamp.The effects of Ce3+,CaCl2 and H3BO3 on the crystal structure and luminescent properties of Ca2BO3Cl:Eu2+ are studied.The results show that its emission intensity can be effectively enhanced by increasing absorption in the region of ultraviolet-near ultraviolet light,which is from the sensitizer Ce3+.The emission intensity of Ca2BO3Cl:Eu2+ can also be enhanced by the excess CaCl2 and H3BO3,and the optimal excess mole concentrations are 5 mol% and 15 mol%,respectively.White LED is fabricated with the phosphor and the 460 nm InGaN LED chip,and the CIE chromaticity coordinate is (0.339,0.351). |
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| Keywords: | white light emitting diode(LED) Ca2BO3Cl Eu CaCl2 H3BO3 C |
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