J. Mater. Sci. Technol. ›› 2016, Vol. 32 ›› Issue (1): 12-16.DOI: 10.1016/j.jmst.2015.11.001

• Orginal Article • Previous Articles     Next Articles

Microstructure and Optical Properties of Yttrium-doped Zinc Oxide (YZO) Nanobolts Synthesized by Hydrothermal Method

Sanjeev K. Sharma, Deuk Young Kim   

  1. Semiconductor Materials and Device Laboratory, Department of Semiconductor Science, Dongguk University-Seoul, Jung-gu, Seoul 100715, Republic of Korea
  • Received:2014-12-23 Revised:2015-07-08 Online:2016-01-19
  • Supported by:
    This research was supported by the Basic Science Research Program (NRF-2013R1A1A2059900), funded by the Korean government of Ministry of Education (MoE).

Abstract: In this work, yttrium-doped zinc oxide (YZO) nanopowder was synthesized via hydrothermal precipitation-method. The microstructure and optical properties of yttrium-doped zinc oxide nanopowder were characterized, which confirmed the well-crystalline wurtzite hexagonal phase of ZnO. The yttrium-doped zinc oxide nanopowder grains formed the nanobolts of ~400 nm in length and ~900 nm in width. High resolution-transmission electron microscopy (HR-TEM) of the nanobolts revealed uniform lattice fringes and no visible faults and/or distortions. X-ray photoelectron spectroscopy (XPS) analysis confirmed the presence of yttrium in the zinc oxide lattice, proving the contribution of yttrium on the microstructural and optical properties of the material. A strong ultra violet (UV) emission peak of the YZO exhibited a red shift compared to pure zinc oxide, which was ascribed to the defects and the formation of a shallow energy level caused by the incorporation of yttrium.

Key words: YZO nanobolts, Hydrothermal synthesis, Microstructural, Optical properties