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Highly efficient stacked organic light-emitting devices employing a novel intermediate layer

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Abstract

Highly efficient stacked organic light-emitting devices (OLEDs) have been fabricated using Mg:Alq3:BCP/WO3 as a novel intermediate layer, which connects two identical emissive units. The stacked OLEDs consisting of NPB/Alq3 exhibited high current efficiency and brightness characteristics over conventional single-unit device. At 200 mA/cm2, the current efficiency of the stacked OLEDs using the intermediate layers of Mg:Alq3:BCP/WO3 were about 6.85 cd/A, doubling that of the conventional device. The results may prove the method to be effective to enhance the current efficiency and brightness of OLEDs.

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References

  1. Tang C W, Vanslyke S A. Organic electroluminescent diodes. Appl Phys Lett, 1987, 51(12): 913–915

    Article  Google Scholar 

  2. Kido J, Matsumoto T. Bright organic electroluminescent devices having a metal-doped electron injecting layer. Appl Phys Lett, 1998, 73(20): 2866–2868

    Article  Google Scholar 

  3. Endo J, Matsumoto T, Kido J. Organic electroluminescent devices with a vacuum-deposited Lewis-acid-doped hole-injecting layer. Jpn J Appl Phys, 2002, 41(12): L358–L360

    Article  Google Scholar 

  4. Gao W, Kahn A. Controlled p-type doping of an organic molecular semiconductor. Appl Phys Lett, 2001, 79(24): 4040–4042

    Article  Google Scholar 

  5. Pfeiffer M, Forrest S R, Leo K, et al. Electrophosphorescent p-i-n organic light emitting devices for very high efficiency flat panel displays. Adv Mater, 2002, 14(22): 1633–1636

    Article  Google Scholar 

  6. Tanaka S, Hosakawa C. Organic EL light emitting element with light emitting layers and intermediate conductive layer. US Patent, 6107734, August 22, 2000

  7. Jones G W, Howard W E. Serially connected organic light emitting diode stack having conductors sandwiching each light emitting layer. US Patent, 6337492, January 8, 2002

  8. Law C W, Lau K M, Fung M K, et al. Effective organic-based connection unit for stacked organic light-emitting devices. Appl Phys Lett, 2006, 89(13): 133511

    Article  Google Scholar 

  9. Lee T W, Noh T Y, Choi B K, et al. High-efficiency stacked white organic light-emitting diodes. Appl Phys Lett, 2008, 92(4): 043301

    Google Scholar 

  10. Sun J X, Zhu X L, Peng H J, et al. Effective intermediate layers for highly efficient stacked organic light-emitting devices. Appl Phys Lett, 2005, 87(9): 093504

    Google Scholar 

  11. Tetsuo T, Masaya T. Electric field-assisted bipolar charge spouting in organic thin-film diodes. Appl Phys Lett, 2004, 84(30): 440–442

    Google Scholar 

  12. Noolandi J, Hong K M. Theory of photo generation and fluorescence quenching. J Chem Phys, 1979, 70(7): 3230–3233

    Article  Google Scholar 

  13. Liao L S, Klubek K P, Tang C W. High-efficiency tandem organic light-emitting diodes. Appl Phys Lett, 2004, 84(2): 167–169

    Article  Google Scholar 

  14. Cho T Y, Lin C L, Wu C C. Microcavity two-unit tandem organic light-emitting devices having a high efficiency. Appl Phys Lett, 2006, 88(11): 111106

    Google Scholar 

Download references

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Authors and Affiliations

  1. Key Laboratory of Optical Engineering, College of Physics and Information Technology, Chongqing Normal University, Chongqing, 400047, China

    LianBin Niu, YunXia Guan, Yue Ren, ChunYang Kong, Yan Ma & YiPing Liang

Authors
  1. LianBin Niu
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  2. YunXia Guan
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  3. Yue Ren
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  4. ChunYang Kong
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  5. Yan Ma
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  6. YiPing Liang
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Corresponding author

Correspondence to LianBin Niu.

Additional information

Supported by the National Natural Science Foundation of China (Grant No. 60806047), Research Programs for Science and Technology of Chongqing Municipal Education Commission (Grant No. KJ080816) and Natural Science Foundation of Chongqing Normal University (Grant No. 07XLB015)

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Niu, L., Guan, Y., Ren, Y. et al. Highly efficient stacked organic light-emitting devices employing a novel intermediate layer. Sci. China Ser. E-Technol. Sci. 52, 95–98 (2009). https://doi.org/10.1007/s11431-009-0001-z

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  • DOI: https://doi.org/10.1007/s11431-009-0001-z

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