Skip to main content
SpringerLink
Log in

White light-emitting quantum dot diodes and tuning of luminescence processes

  • Published:
Applied Physics A Aims and scope Submit manuscript

Abstract

A novel white light-emitting diode based on a large Stokes shift (~200 nm) and using pure green light-emitting CdSeS quantum dots (QDs) with an Ag/ZnSnO/QDs/spiro-TPD/ITO structure has been fabricated in which ZnSnO and spiro-TPD are served as the electron and hole transport layer, respectively. The large Stokes shift of the CdSeS QDs excludes potentially Förster resonance energy transfer process, which allows spiro-TPD to act as both an emitter and hole transport layer. The devices exhibit a wide EL spectrum consisting of three components: blue emission from spiro-TPD, green emission from QD band–band recombination, and red emission from QD surface-state recombination. We further found that as the intensity ratios among these three components vary with bias the color of the QD light-emitting diodes is tunable. The device displays a good white light-emitting characteristic with CIE coordinates of (0.281, 0.384) at an appropriate bias.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Fig. 1
Fig. 2
Fig. 3
Fig. 4
Fig. 5

Similar content being viewed by others

References

  1. Y. Li, A. Rizzo, M. Mazzeo, L. Carbone, L. Manna, R. Cingolani, G. Gigli, J. Appl. Phys. 97(11), 113501 (2005)

    Article  ADS  Google Scholar 

  2. B.-H. Kang, T.-Y. You, S.-H. Yeom, K.-J. Kim, S.-H. Kim, S.-W. Lee, H. Yuan, D.-H. Kwon, S.-W. Kang, Photonics Technol. Lett., IEEE 24(18), 1594 (2012)

    Article  ADS  Google Scholar 

  3. J.H. Park, J.Y. Kim, B.D. Chin, Y.C. Kim, J.K. Kim, O.O. Park, Nanotechnology 15(9), 1217 (2004)

    Article  ADS  Google Scholar 

  4. Y. Li, A. Rizzo, R. Cingolani, G. Gigli, Adv. Mater. 18(19), 2545 (2006)

    Article  Google Scholar 

  5. P.O. Anikeeva, J.E. Halpert, M.G. Bawendi, V. Bulović, Nano Lett. 7(8), 2196 (2007)

    Article  ADS  Google Scholar 

  6. M.J. Bowers, J.R. McBride, S.J. Rosenthal, J. Am. Chem. Soc. 127(44), 15378 (2005)

    Article  Google Scholar 

  7. S. Chandramohan, B.D. Ryu, H.K. Kim, C.-H. Hong, E.-K. Suh, Opt. Lett. 36(6), 802 (2011)

    Article  ADS  Google Scholar 

  8. M.A. Schreuder, J.D. Gosnell, N.J. Smith, M.R. Warnement, S.M. Weiss, S.J. Rosenthal, J. Mater. Chem. 18(9), 970 (2008)

    Google Scholar 

  9. C.B. Soh, W. Liu, J.H. Teng, S.Y. Chow, S.S. Ang, S.J. Chua, Appl. Phys. Lett. 92(26), 261909 (2008)

    Article  ADS  Google Scholar 

  10. M.A. Schreuder, K. Xiao, I.N. Ivanov, S.M. Weiss, S.J. Rosenthal, Nano Lett. 10(2), 573 (2010)

    Article  ADS  Google Scholar 

  11. J.M. Caruge, J.E. Halpert, V. Wood, V. Bulović, M.G. Bawendi, Nat. Photonics. 2, 247 (2008)

    Article  Google Scholar 

  12. V. Wood, M.J. Panzer, J.-M. Caruge, J.E. Halpert, M.G. Bawendi, V. Bulovic, Nano Lett. 10(1), 24 (2009)

    Article  ADS  Google Scholar 

  13. S. Coe, W.-K. Woo, M. Bawendi, V. Bulovic, Nature 420(6917), 800–803 (2002)

    Article  ADS  Google Scholar 

  14. P.O. Anikeeva, J.E. Halpert, M.G. Bawendi, V. Bulović, Nano Lett. 9(7), 2532 (2009)

    Article  ADS  Google Scholar 

  15. T. Forster, Discuss. Faraday Soc. 27, 7 (1959)

    Article  Google Scholar 

  16. K. Aslan, Z. Leonenko, J.R. Lakowicz, C.D. Geddes, J. Fluoresc. 15(5), 643 (2005)

    Article  Google Scholar 

  17. J.S. Biteen, N.S. Lewis, H.A. Atwater, H. Mertens, A. Polman, Appl. Phys. Lett. 88(13), 131109 (2006)

    Article  ADS  Google Scholar 

  18. H. Lian, W. Huizhen, W. Zhengfen, C. Chunfeng, X. Tianning, L. Tenggang, Z. Bingpo, New J. Phys. 14(1), 013059 (2012)

    Article  Google Scholar 

  19. L. Hu, H.Z. Wu, C.F. Cai, T.N. Xu, B.P. Zhang, S.Q. Jin, Z.F. Wan, X.D. Wei, J. Phys. Chem. C 116(20), 11283 (2012)

    Article  Google Scholar 

  20. S.A. Empedocles, M.G. Bawendi, Science 278, 2114 (1997)

    Article  ADS  Google Scholar 

Download references

Acknowledgments

This work was sponsored by National Key Basic Research Program of China (No. 2011CB925603) and Natural Science Foundation of China (Nos. 61290305 and 11374259).

Author information

Authors and Affiliations

  1. Department of Physics, State Key Laboratory of Silicon Materials, Zhejiang University, Hangzhou, 310027, People’s Republic of China

    Bozhi Liu, Ruifeng Li, Lian Hu & Huizhen Wu

Authors
  1. Bozhi Liu
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. Ruifeng Li
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. Lian Hu
    View author publications

    You can also search for this author in PubMed Google Scholar

  4. Huizhen Wu
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding author

Correspondence to Huizhen Wu.

Rights and permissions

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Liu, B., Li, R., Hu, L. et al. White light-emitting quantum dot diodes and tuning of luminescence processes. Appl. Phys. A 116, 941–945 (2014). https://doi.org/10.1007/s00339-014-8465-5

Download citation

  • Received:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s00339-014-8465-5

Keywords

Search

Navigation