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Highly efficient and bright doped organic electroluminescent diodes using an aluminum electrode

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Abstract

Remarkable improvement in efficiency and electroluminescence (EL) has been observed in an organic EL device, which consists of a hole-transport layer and a luminescent layer. The hole-transport layer is an N,N′-bis(3-methyphenyl)-N,N′-diphenylbenzidine film. The doped emitting layer consists of 8-(quinolinolate)-aluminum as the host and rubrene as the emission dopant. The doped cell with aluminum cathode demonstrated a luminance in excess of 20,000 cd/m2 and an external quantum efficiency of 2.7%, which is about four times and three times, respectively, greater than those of the undoped cell. The EL emission from the device shows spectral narrowing and a shift to higher energy.

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Authors and Affiliations

  1. National Lab of Integrated Optoelectronics, Jilin University, Changchun, People' Republic of China, 130023

    Jingsong Huang, Zhiyuan Xie, Kaixia Yang, Chuannan Li & Shiyong Liu

  2. Key Lab of Superamolecular Structure and Spectroscopy, Jilin University, Changchun, People' Republic of China, 130023

    Yanqin Li, Yue Wang & Jiacong Shen

Authors
  1. Jingsong Huang
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  2. Zhiyuan Xie
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  3. Kaixia Yang
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  4. Chuannan Li
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  5. Shiyong Liu
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  6. Yanqin Li
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  7. Yue Wang
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  8. Jiacong Shen
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Huang, J., Xie, Z., Yang, K. et al. Highly efficient and bright doped organic electroluminescent diodes using an aluminum electrode. Optical and Quantum Electronics 31, 1227–1233 (1999). https://doi.org/10.1023/A:1006936914557

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  • DOI: https://doi.org/10.1023/A:1006936914557

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