Optoelectronics Letters

, Volume 13, Issue 2, pp 116–119 | Cite as

Green phosphorescent organic light-emitting devices based on different electron transport layers combining with fluorescent sub-monolayer

  • Hui-shan Yang (杨惠山)
  • Hui-yu Guo (郭慧瑜)
  • Li-shuang Wu (吴丽双)


We report a small molecule host of 4,4(-N,N)-dicarbazole-biphenyl (CBP) doped with 8% tris(2-phenylpyridine) iridium (Irppy3) for use in efficient green phosphorescent organic light-emitting devices (PHOLEDs) combined with different electron transport layers of Alq and BAlq. The PHOLEDs exhibit maximum current efficiency and power efficiency of 19.8 cd/A and 6.21 lm/W, respectively. The high performance of such PHOLEDs is attributed to the better electron mobile ability of BAlq and sub-monolayer quinacridone (QAD) as carrier trapping layer and equal charge carrier mobilities of hole and electron to form the broad carrier recombination zone in the emitting layer, which can reduce the triplet-triplet annihilation and improve the efficiency of the device.

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  1. [1]
    Juan Zhao, Zijun Wang, Run Wang, Zhenguo Chi and Junsheng Yu, Journal of Luminescence 184, 287 (2017).ADSCrossRefGoogle Scholar
  2. [2]
    Zheng-Guang Wu, You-Xuan Zheng, Liang Zhou, Yi Wang and Yi Pan, Organic Electronics 42, 141 (2017).CrossRefGoogle Scholar
  3. [3]
    R. Mac Ciarnain, D. Michaelis, T. Wehlus, A. F. Rausch, N. Danz, A. Bräuer and A. Tünnermann, Organic Electronics 44, 115 (2017).CrossRefGoogle Scholar
  4. [4]
    L. Zhang, H. Nakanotani and C. Adachi, Applied Physics Letters 103, 093301 (2013).ADSCrossRefGoogle Scholar
  5. [5]
    C. Weichsel, S. Reineke, M. Furno, B. Lüssem and K. Leo, Journal of Applied Physics 111, 033102 (2012).ADSCrossRefGoogle Scholar
  6. [6]
    C. Adachi, M. A. Baldo, M. E. Thompson and S. R. Forrest, Journal of Applied Physics 90, 5048 (2001).ADSCrossRefGoogle Scholar
  7. [7]
    S. O. Jeon, K. S. Yool, C. W. Joo and J. Y. Lee, Organic Electronics 11, 881 (2010).CrossRefGoogle Scholar
  8. [8]
    H. A. Al Attar and P. Monkman, Advanced Functional Materials 16, 2231 (2006).CrossRefGoogle Scholar
  9. [9]
    Y. Sun, N. C. Giebink, H. Kanno, B. Ma, M. E. Thompson and S. R. Forrest, Nature 440, 908 (2006).ADSCrossRefGoogle Scholar
  10. [10]
    K. S. Yook, S. O. Jeon, C. W. Joo, J. Y. Lee, M. S. Kim, H. S. Choi, S. J. Lee, C. W. Han and Y. H. Tak, Organic Electronics 10, 681 (2009).CrossRefGoogle Scholar
  11. [11]
    M. E. Kondakova, T. D. Pawlik, R. H. Young, D. J. Giesen, D. Y. Kondakov, C. T. Brown, J. C. Deaton, J. R. Lenhard and K. P. Klubek, Journal of Applied Physics 104, 094501 (2008).ADSCrossRefGoogle Scholar
  12. [12]
    N. Chopra, J. S. Swensen, E. Polikarpov, L. Cosimbescu, F. So and A. B. Padmaperuma, Applied Physics Letters 97, 033304 (2010).ADSCrossRefGoogle Scholar
  13. [13]
    J. Lee, J. I. Lee, J. Y. Lee and H. Y. Chu, Applied Physics Letters 94, 193305 (2009).ADSCrossRefGoogle Scholar
  14. [14]
    X. Qiao, Y. Tao, Q. Wang, D. Ma, C. Yang, L. Wang, J. Qin and F. Wang, Journal of Applied Physics 108, 034508 (2010).ADSCrossRefGoogle Scholar
  15. [15]
    X. Zhou, D. S. Qin, M. Pfeiffer, J. Blochwitz-Nimoth, A. Werner, J. Drechsel, B. Maennig, K. Leo, M. Bold, P. Erk and H. Hartmann, Applied Physics Letters 81, 4070 (2002).ADSCrossRefGoogle Scholar
  16. [16]
    G. He, M. Pfeiffer, K. Leo, M. Hofmann, J. Birnstock, R. Pudzich and J. Salbeck, Applied Physics Letters 85, 3911 (2004).ADSCrossRefGoogle Scholar
  17. [17]
    T. Zheng and W. C. H. Choy, Advanced Functional Materials 20, 648 (2010).CrossRefGoogle Scholar
  18. [18]
    Chih-Hao Chang, Chung-Chia Chen, Chung-Chih Wu, Sheng-Yuan Chang, Jui-Yi Hung and Yun Chi, Organic Electronics 11, 266 (2010).CrossRefGoogle Scholar
  19. [19]
    Chih-Hung Hsiao, Yi-Hsin Lan, Pei-Yu Lee, Tien-Lung Chiu and Jiun-Haw Lee, Organic Electronics 12, 547 (2011).CrossRefGoogle Scholar
  20. [20]
    Yi-Hsin Lan, Chih-Hung Hsiao, Pei-Yu Lee, Yi-Chi Bai, Chung-Chieh Lee, Chih-Chiang Yang, Man-Kit Leung, Mao-Kuo Wei, Tien-Lung Chiu and Jiun-Haw Lee, Organic Electronics 12, 756 (2011).CrossRefGoogle Scholar
  21. [21]
    YANG Hui-shan and WU Li-shuang, Optoelectronics Letters 13, 29 (2017).ADSCrossRefGoogle Scholar
  22. [22]
    WANG Rui-xue, FAN Chang-jun and YANG Xiao-Hui, Journal of Optoelectronics·Laser 26, 649 (2015).(in Chinese)Google Scholar

Copyright information

© Tianjin University of Technology and Springer-Verlag Berlin Heidelberg 2017

Authors and Affiliations

  • Hui-shan Yang (杨惠山)
    • 1
  • Hui-yu Guo (郭慧瑜)
    • 1
  • Li-shuang Wu (吴丽双)
    • 1
  1. 1.College of Physics and Information EngineeringQuanzhou Normal UniversityQuanzhouChina

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