| 阻挡层结构的蓝色有机发光二极管 |
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| 引用本文： | 朱文清,张步新,蒋雪茵,张志林,许少鸿.阻挡层结构的蓝色有机发光二极管[J].半导体光电,2001,22(1):45-47. |
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| 作者姓名： | 朱文清 张步新 蒋雪茵 张志林 许少鸿 |
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| 作者单位： | 上海大学 嘉定校区材料系, |
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| 基金项目： | 国家自然科学基金;59790050; |
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| 摘 要： | 制备了ITO／CuPc/NPB/TPBi/Alq3/MgAg有机发光二极 管，由于阻挡层TPBi对空穴的阻挡作用，器件的电致发光为NPB特征光谱，实现了蓝色发光。器件最大亮度和最大流明效率分别为3700cd/cm^2和0.78 lm/W,CIE色坐标为x=0.110 ,y=0.085,色度纯正。然而器件显现出较差的稳定。利用器件的能级结构，分析了器件的光学特性和影响稳定性的因素。
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| 关 键 词： | 有机电致发光 蓝色发光 阻挡层 稳定性 发光二极管 |
| 文章编号： | 1001-5868(2001)01-0045-03 |
| 修稿时间： | 2000年6月12日 |
Blue Organic Light Emitting Diode with a Blocking Layer |
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| ZHU Wen-qing,ZHANG Bu-xin,JIANG Xue-Yin,ZHANG Zhi-lin,XU Shao-hong.Blue Organic Light Emitting Diode with a Blocking Layer[J].Semiconductor Optoelectronics,2001,22(1):45-47. |
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| Authors: | ZHU Wen-qing ZHANG Bu-xin JIANG Xue-Yin ZHANG Zhi-lin XU Shao-hong |
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| Abstract: | A blue organic light emitting diode with TPBi as a blocking layer has been prepared. The EL spectrum peak is at 450 nm, indicating that the carrier recombination is confined in the NPB by TPBi layer and light emission originates from NPB. The maximum luminance and luminous efficiency are 3 700 cd/m 2 and 0.78 lm/W, respectively. The CIE coordinates of this diode are x =0.110, y =0.085, showing a good purity for blue OEL display. Luminance and durability characteristics are discussed based on the energy level diagram. |
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| Keywords: | organic electroluminescence blue light emitting blocking layer durability |
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