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Keywords:

  • ZnO;
  • homojunctions;
  • aqueous solution method;
  • light-emitting diodes;
  • nanorods;
  • semiconductors
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The fabrication of a p-shell/n-core coaxial nanorod ZnO homojunction light-emitting diode by inexpensive solution method is demonstrated. The p-type conductivity of the ZnO shell arises from the incorporation of potassium while the n-type conductivity of the core is due to unintentional doping.