Articles
  • Surface, structural, and optical property variations of ZnO nanocrystals formed on Si substrates due to thermal treatment
  • Young Soo No, Su Youn Kim and Tae Whan Kim*
  • National Research Laboratory for Nano Quantum Electronics Devices, Department of Electronics and Computer Engineering, Hanyang University, Seoul 133-791, Korea
Abstract
ZnO nanocrystals were formed on Si substrates using spin coating and thermal annealing. X-ray diffraction patterns showed that the intensity of the ZnO (0002) peak corresponding to the ZnO [0001] nanocrystals increased with an increase in annealing temperature up to 700 οC, indicative of the improvement of the crystallinity of the ZnO nanocrystals. The photoluminescence spectra at 13 K for ZnO nanocrystals formed on the Si substrates showed that the strong exciton peak related to the near-band-edge emission was shifted to a lower energy with increasing annealing temperature resulting from the increase in the size of the ZnO nanocrystals.

Keywords: Thermal annealing, ZnO nanocrystal, Surface property, Structural property, Optical property.

This Article

  • 2013; 14(1): 8-11

    Published on Feb 28, 2013

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