Surface, structural, and optical property variations of ZnO nanocrystals formed on Si substrates due to thermal treatment

Young Soo No, Su Youn Kim, Taewhan Kim

Research output: Contribution to journalArticle

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 °C, 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.

Original languageEnglish
Pages (from-to)8-11
Number of pages4
JournalJournal of Ceramic Processing Research
Volume14
Issue number1
StatePublished - 2013 Sep 24

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Keywords

  • Optical property
  • Structural property
  • Surface property
  • Thermal annealing
  • ZnO nanocrystal

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