Advertisement

Applied Physics A

, Volume 117, Issue 2, pp 589–591 | Cite as

Highly efficient white quantum dot light-emitting diode based on ZnO quantum dot

  • Jing ChenEmail author
  • Jiangyong Pan
  • Du Qingguo
  • G. Alagappan
  • Wei Lei
  • Qing Li
  • Jun Xia
Article

Abstract

White quantum dot light-emitting diodes (QD-LEDs) have been a promising candidate for high-efficiency and color-saturated displays. Here, we report a simply solution-processed white QD-LED using ZnO QDs as emitters. The device is demonstrated with a maximum luminance of 300 cd/m2, exhibiting the Commission Internationale de l’Enclairage coordinates of (0.33, 0.33). The unencapsulated white QD-LED has a long lifetime of 120 h. These results indicate that ZnO QDs provides an alternate and effective approach to achieve high-performance white QD-LEDs and also other optoelectronic devices.

Keywords

High Occupied Molecular Orbital Lower Unoccupied Molecular Orbital High Occupied Molecular Orbital Lower Unoccupied Molecular Orbital Driving Voltage 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Notes

Acknowledgments

This work was supported partially by the National Key Basic Research Program 973 (2013CB328804, 2013CB328803, and 2010CB327705), the National High-Tech R&D Program 863 of China (2012AA03A302, 2013AA011004) National Natural Science Foundation Project (51002031, 61007036, 61101023, 51202028, 61106055, 51372039, and 61271053), Foundation of Doctoral Program of Ministry of Education under Grant (20120092120025), the Chinese 111 Project (B07027), and Natural Science Foundation of Jiangsu Province of China (BK20141390).

References

  1. 1.
    T.H. Kim, K.-S. Cho, E.K. Lee, S.J. Lee, J. Chae, J.W. Kim, D.H. Kim, J.-Y. Kwon, G. Amaratunga, S.Y. Lee, B.L. Choi, Y. Kuk, J.M. Kim, K. Kim, Full-colour quantum dot displays fabricated by transfer printing. Nat Photon 5(3), 176–182 (2011)CrossRefADSGoogle Scholar
  2. 2.
    L. Qian, Y. Zheng, J. Xue, P.H. Holloway, Stable and efficient quantum-dot light-emitting diodes based on solution-processed multilayer structures. Nat Photon 5(9), 543–548 (2011)CrossRefADSGoogle Scholar
  3. 3.
    White, M.S., Kaltenbrunner, M., Glowacki, E.D., Gutnichenko, K., Kettlgruber, G., Graz, I., Aazou, S., Ulbricht, C., Egbe, D.A.M., Miron, M.C., Major, Z., Scharber, M.C., Sekitani, T., Someya, T., Bauer, S., Sariciftci, N.S.: ‘Ultrathin, highly flexible and stretchable PLEDs’, Nat Photon, 2013, advance online publicationGoogle Scholar
  4. 4.
    M. Achermann, M.A. Petruska, D.D. Koleske, M.H. Crawford, V.I. Klimov, Nanocrystal-based light-emitting diodes utilizing high-efficiency nonradiative energy transfer for color conversion. Nano Lett 6(7), 1396–1400 (2006)CrossRefADSGoogle Scholar
  5. 5.
    Jang, E., Jun, S., Jang, H., Lim, J., Kim, B., and Kim, Y.: White-light-emitting diodes with quantum dot color converters for display backlights. Adv Mater 22(28), 3076–3080 (2010)Google Scholar
  6. 6.
    Demir, H.V., Nizamoglu, S., Erdem, T., Mutlugun, E., Gaponik, N., and Eychmuller, A.: Quantum dot integrated LEDs using photonic and excitonic color conversion. Nano Today 6(6), 632–647 (2011)Google Scholar
  7. 7.
    L. Qian, Y. Zheng, K.R. Choudhury, D. Bera, F. So, J. Xue, P.H. Holloway, Electroluminescence from light-emitting polymer/ZnO nanoparticle heterojunctions at sub-bandgap voltages. Nano Today 5(5), 384–389 (2011)CrossRefGoogle Scholar
  8. 8.
    H. Zeng, G. Duan, Y. Li, S. Yang, X. Xu, W. Cai, Blue luminescence of ZnO nanoparticles based on non-equilibrium processes: defect origins and emission controls. Adv. Funct. Mater. 20(4), 561–572 (2010)CrossRefGoogle Scholar
  9. 9.
    D.I. Son, B.W. Kwon, D.H. Park, W.-S. Seo, Y. Yi, B. Angadi, C.-L. Lee, W.K. Choi, Emissive ZnO–graphene quantum dots for white-light-emitting diodes. Nat Nano 7(7), 465–471 (2012)CrossRefGoogle Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 2014

Authors and Affiliations

  • Jing Chen
    • 1
    Email author
  • Jiangyong Pan
    • 1
  • Du Qingguo
    • 2
  • G. Alagappan
    • 2
  • Wei Lei
    • 1
  • Qing Li
    • 1
  • Jun Xia
    • 1
  1. 1.School of Electronic Science and EngineeringSoutheast UniversityNanjingChina
  2. 2.Institute of High Performance ComputingSingaporeSingapore

Personalised recommendations