Journal of Nanoparticle Research

, Volume 12, Issue 1, pp 169–176 | Cite as

Blue electroluminescence nanodevice prototype based on vertical ZnO nanowire/polymer film on silicon substrate

  • Ying He
  • Jun-An Wang
  • Xiao-Ban Chen
  • Wen-Fei Zhang
  • Xu-Yu Zeng
  • Qiu-Wen Gu
Research Paper

Abstract

We present a polymer-complexing soft template technique to construct the ZnO-nanowire/polymer light emitting device prototype that exhibits blue electrically driven emission with a relatively low-threshold voltage at room temperature in ambient atmosphere, and the ZnO-nanowire-based LED’s emission wavelength is easily tuned by controlling the applied-excitation voltage. The nearly vertically aligned ZnO-nanowires with polymer film were used as emissive layers in the devices. The method uses polymer as binder in the LED device and dispersion medium in the luminescence layer, which stabilizes the quasi-arrays of ZnO nanowires embedding in a thin polymer film on silicon substrate and passivates the surface of ZnO nanocrystals, to prevent the quenching of luminescence. Additionally, the measurements of electrical properties showed that ZnO-nanowire/polymer film could significantly improve the conductivity of the film, which could be attributed to an increase in both Hall mobility and carrier concentration. The results indicated that the novel technique is a low-cost process for ZnO-based UV or blue light emission and reduces the requirement for achieving robust p-doping of ZnO film. It suggests that such ZnO-nanowire/polymer-based LEDs will be suitable for the electro-optical application.

Keywords

Electroluminescence ZnO nanowires Nanodevice Polymer-assisted self-assembling 

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Copyright information

© Springer Science+Business Media B.V. 2009

Authors and Affiliations

  • Ying He
    • 1
  • Jun-An Wang
    • 2
  • Xiao-Ban Chen
    • 1
  • Wen-Fei Zhang
    • 1
  • Xu-Yu Zeng
    • 1
  • Qiu-Wen Gu
    • 1
  1. 1.Department of Polymer Materials, School of Materials Science and EngineeringShanghai UniversityShanghaiPeople’s Republic of China
  2. 2.Institute of Materials, School of Materials Science and EngineeringShanghai UniversityShanghaiPeople’s Republic of China

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