| 一种稳定的蓝色有机电致发光材料 |
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| 引用本文： | 郑新友,吴有智,朱文清,张步新,蒋雪茵,张志林,许少鸿.一种稳定的蓝色有机电致发光材料[J].上海大学学报(英文版),2002,6(3):244-247. |
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| 作者姓名： | 郑新友 吴有智 朱文清 张步新 蒋雪茵 张志林 许少鸿 |
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| 作者单位： | SchoolofMaterialsScienceandEngineering,ShanghaiUniversity,Shanghai200072,China |
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| 基金项目： | ProjectsupportedbytheNationalNaturalScienceFoundationof China(5 9790 0 5 0and 696870 0 2 ) |
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| 摘 要： | In order to compare two kinds of blue electroluminescent materials,we have investigated two kinds of blue OLEDs with the similar structure ITO/CuPc/NPB/JBEM:perylene/Alq/Mg:Agdevice(J)] and ITO/CuPc/NPB/DPVBi:perylene/Alq/Mg:Agdevice(D)].The difference of luminance and efficiency was not obvious for the two devices,However,there was remarkable difference for their lifetime.The device(J) achieved longer half lifetime of 1035h at initial luminance of 100 cd/m^2,and that of device(D) was only255h,According to their energy level diagrams,the differentce of their stability may originate from different host materials in the two devices.It may be attributed to the better thermal stability of JBEM molecues than that of DPVBi.It is shown that JBEM may be a promising blue organic electroluminescent material with great stability.
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| 关 键 词： | 场致发光材料 有机物质 稳定性 |
| 收稿时间： | 12 December 2001 |
A stable blue organic electroluminescent material |
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| Zheng?Xin-You,Wu?You-Zhi,Zhu?Wen-Qing,Zhang?Bu-Xin,Jiang?Xue-Yin,Zhang?Zhi-Lin,Xu?Shao-Hong.A stable blue organic electroluminescent material[J].Journal of Shanghai University(English Edition),2002,6(3):244-247. |
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| Authors: | Zheng Xin-You Wu You-Zhi Zhu Wen-Qing Zhang Bu-Xin Jiang Xue-Yin Zhang Zhi-Lin Xu Shao-Hong |
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| Institution: | School of Materials Science and Engineering, Shanghai University, Shanghai 200072, China |
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| Abstract: | In order to compare two kinds of blue electroluminescent materials, we have investigated two kinds of blue OLEDs with the similar structrue ITO/CuPc/NPB/JBEM: perylene/Alq/Mg:Ag device(J)] and ITO/CuPc/NPB/DPVBi: perylene/Alq/Mg:Ag device(D)]. The difference of luminance and efficiency was not obvious for the two devices. However, there was remarkable difference for their lifetime. The device(J) achieved longer half lifetime of 1035 h at initial luminance of 100 cd/m 2, and that of device(D) was only 255 h. According to their energy level diagrams , the difference of their stability may originate from different host materials in the two devices. It may be attributed to the better thermal stability of JBEM molecules than that of DPVBi. It is shown that JBEM may be a promising blue organic electroluminescent material with great stability. |
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| Keywords: | blue electroluminescent material stability |
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