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Journal of Nanomaterials
Volume 2014, Article ID 915894, 6 pages
http://dx.doi.org/10.1155/2014/915894
Research Article

Enhancing Color Purity and Stable Efficiency of White Organic Light Diodes by Using Hole-Blocking Layer

1Department of Applied Physics, National University of Kaohsiung, Nanzih, Kaohsiung 81148, Taiwan
2Department of Electronic Engineering, Fortune Institute of Technology, Kaohsiung 83160, Taiwan
3Department of Aviation & Communication Electronics, Air Force Institute of Technology, Kaohsiung 82044, Taiwan
4Department of Electro-Optical Engineering, Southern Taiwan University of Science and Technology, Tainan 71005, Taiwan

Received 18 May 2014; Accepted 4 June 2014; Published 17 June 2014

Academic Editor: Fu-Ken Liu

Copyright © 2014 Chien-Jung Huang et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Linked References

  1. C. W. Tang and S. A. Vanslyke, “Organic electroluminescent diodes,” Applied Physics Letters, vol. 51, no. 12, pp. 913–915, 1987. View at Publisher · View at Google Scholar · View at Scopus
  2. R. H. Friend, R. W. Gymer, A. B. Holmes et al., “Electroluminescence in conjugated polymers,” Nature, vol. 397, no. 6715, pp. 121–128, 1999. View at Publisher · View at Google Scholar · View at Scopus
  3. H. Aziz, Z. D. Popovic, N. X. Hu, A. M. Hor, and G. Xu, “Degradation mechanism of small molecule-based organic light-emitting devices,” Science, vol. 283, no. 5409, pp. 1900–1902, 1999. View at Publisher · View at Google Scholar · View at Scopus
  4. Y. Wang, Y.-L. Hua, X.-M. Wu, L.-J. Zhang, Q.-C. Hou, and Q. Liu, “High-efficiency fluorescent white organic light-emitting device with double emissive layers,” Organic Electronics, vol. 9, no. 2, pp. 273–278, 2008. View at Publisher · View at Google Scholar · View at Scopus
  5. P. Chen, W. Xie, J. Li et al., “White organic light-emitting devices with a bipolar transport layer between blue fluorescent and orange phosphorescent emitting layers,” Applied Physics Letters, vol. 91, no. 2, Article ID 023505, 3 pages, 2007. View at Publisher · View at Google Scholar · View at Scopus
  6. M.-Y. Chang, C.-H. Wang, S.-C. Lin, and Y.-F. Chen, “High-brightness, high-color-purity, white organic light-emitting diodes featuring multiple emission layers,” Journal of Applied Physics, vol. 105, no. 6, Article ID 064318, 6 pages, 2009. View at Publisher · View at Google Scholar · View at Scopus
  7. C.-H. Hsiao and J.-H. Lee, “Emitting-layer design of white organic light-emitting devices with single-host material,” Journal of Applied Physics, vol. 106, no. 2, Article ID 024503, 7 pages, 2009. View at Publisher · View at Google Scholar · View at Scopus
  8. H. Yang, Y. Shi, Y. Zhao et al., “High colour rendering index white organic light-emitting devices with three emitting layers,” Displays, vol. 29, no. 4, pp. 327–332, 2008. View at Publisher · View at Google Scholar · View at Scopus
  9. S.-H. Yang, B.-C. Hong, and S.-F. Huang, “Luminescence enhancement and emission color adjustment of white organic light-emitting diodes with quantum-well-like structures,” Journal of Applied Physics, vol. 105, no. 11, Article ID 113105, 7 pages, 2009. View at Publisher · View at Google Scholar · View at Scopus
  10. H.-P. Lin, D.-B. Yu, X.-W. Zhang et al., “Enhancing color purity and efficiency of white organic light-emitting diodes using a double-emitting layer,” Semiconductor Science and Technology, vol. 25, no. 10, Article ID 105004, 2010. View at Publisher · View at Google Scholar · View at Scopus
  11. S.-S. Lee, D. Ko, C.-H. Chung, and S. M. Cho, “Movement of carrier recombination zone in organic light emitting devices by applied voltage,” Synthetic Metals, vol. 128, no. 1, pp. 51–55, 2002. View at Publisher · View at Google Scholar · View at Scopus
  12. X. Y. Zheng, W. Q. Zhu, Y. Z. Wu et al., “A white OLED based on DPVBi blue light emitting host and DCJTB red dopant,” Displays, vol. 24, no. 3, pp. 121–124, 2003. View at Publisher · View at Google Scholar · View at Scopus
  13. J.-H. Jou, Y.-S. Chiu, R.-Y. Wang, H.-C. Hu, C.-P. Wang, and H.-W. Lin, “Efficient, color-stable fluorescent white organic light-emitting diodes with an effective exciton-confining device architecture,” Organic Electronics, vol. 7, no. 1, pp. 8–15, 2006. View at Publisher · View at Google Scholar · View at Scopus
  14. Y.-S. Seo and D.-G. Moon, “Highly efficient blue phosphorescent organic light-emitting devices using simple structures with thin 1,1-bis[(di-4-tolyamino)phenyl]cyclohexane layers,” Synthetic Metals, vol. 160, no. 1-2, pp. 113–115, 2010. View at Publisher · View at Google Scholar · View at Scopus
  15. J. Zhu, W. Li, B. Chu et al., “Non-doped-type white organic light-emitting diodes for lighting purpose,” Journal of Luminescence, vol. 130, no. 5, pp. 865–868, 2010. View at Publisher · View at Google Scholar · View at Scopus
  16. S.-H. Yang and D.-W. Zhuang, “Enhancement of efficiency of multilayer polymer light-emitting diodes by inserting blocking layers,” Journal of Luminescence, vol. 131, no. 4, pp. 801–807, 2011. View at Publisher · View at Google Scholar · View at Scopus
  17. Q. Xue, S. Zhang, G. Xie et al., “Efficient fluorescent white organic light-emitting devices based on a ultrathin 5,6,11,12-tetraphenylnaphthacene layer,” Solid-State Electronics, vol. 57, no. 1, pp. 35–38, 2011. View at Publisher · View at Google Scholar · View at Scopus
  18. H. Mattoussi, H. Murata, C. D. Merritt, Y. Iizumi, J. Kido, and Z. H. Kafafi, “Photoluminescence quantum yield of pure and molecularly doped organic solid films,” Journal of Applied Physics, vol. 86, no. 5, pp. 2642–2649, 1999. View at Google Scholar
  19. Y. Wang, F. Teng, Z. Xu, Y. Hou, S. Yang, and X. Xu, “Trap effect of an ultrathin DCJTB layer in organic light-emitting diodes,” Materials Chemistry and Physics, vol. 92, no. 2-3, pp. 291–294, 2005. View at Publisher · View at Google Scholar · View at Scopus
  20. M. Matsumura and T. Furukawa, “Efficient electroluminescence from a rubrene sub-monolayer inserted between electron- and hole-transport layers,” Japanese Journal of Applied Physics A, vol. 40, no. 5, pp. 3211–3214, 2001. View at Google Scholar · View at Scopus
  21. T. Li, X. Li, W. Li et al., “Tunable red emission by incorporation of a rubrene derivative in p-type and n-type hosts in organic light emitting devices,” Thin Solid Films, vol. 517, no. 16, pp. 4629–4632, 2009. View at Publisher · View at Google Scholar · View at Scopus
  22. Q. Xue, G. Xie, P. Chen et al., “White organic light-emitting devices with a bipolar transport layer between blue fluorescent and yellow phosphor-sensitized-fluorescent emitting layers,” Synthetic Metals, vol. 160, no. 7-8, pp. 829–831, 2010. View at Publisher · View at Google Scholar · View at Scopus
  23. J. Zhao, J. Yu, L. Zhang, and J. Wang, “Non-doped phosphorescent white organic light-emitting devices with a quadruple-quantum-well structure,” Physica B: Condensed Matter, vol. 407, no. 14, pp. 2753–2757, 2012. View at Publisher · View at Google Scholar · View at Scopus
  24. C.-J. Huang, T.-H. Meen, K.-C. Liao, and Y.-K. Su, “The mechanism of efficiency enhancement with proper thickness of DPVBi layer for blue organic light-emitting devices (BOLED),” Journal of Physics and Chemistry of Solids, vol. 70, no. 3-4, pp. 765–768, 2009. View at Publisher · View at Google Scholar · View at Scopus
  25. H.-P. Lin, F. Zhou, J. Li et al., “A high performance of BPhen-based white organic light-emitting devices with a dual-emitting layer and its electroluminescent spectral property,” Journal of Industrial and Engineering Chemistry, vol. 17, no. 4, pp. 675–680, 2011. View at Publisher · View at Google Scholar · View at Scopus
  26. L. Wen, F. Li, J. Xie et al., “Electroplex emission at PVK/Bphen interface for application in white organic light-emitting diodes,” Journal of Luminescence, vol. 131, no. 11, pp. 2252–2254, 2011. View at Publisher · View at Google Scholar · View at Scopus
  27. B. Ding, W. Zhu, X. Jiang, and Z. Zhang, “White organic light-emitting diodes based on incomplete energy transfer from perylene to rubrene,” Solid State Communications, vol. 148, no. 5-6, pp. 226–229, 2008. View at Publisher · View at Google Scholar · View at Scopus
  28. C. J. Huang, T. H. Meen, S. L. Wu, and C. C. Kang, “Improvement of color purity and electrical characteristics by co-doping method for flexible red-light organic light emitting devices,” Displays, vol. 30, no. 4-5, pp. 164–169, 2009. View at Publisher · View at Google Scholar · View at Scopus