Articles
  • Effect of Cu concentration on the structural and optical properties of hierarchically porous Cu-doped ZnO nanostructures 
  • Dea Uk Leea, Young Soo Noa, N. Sabari Arula, Tae Whan Kima,*, Hyoungkook Kimb, Yongjin Baeb and Jin Young Kimc
  • a Department of Electronics and Computer Engineering, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul 133-791, Korea b Department of Electronic Engineering, Hanyang University, Seoul 133-791, Korea c Department of Electronic Material Engineering, Kwangwoon University, Seoul 139-701, Korea
Abstract
Hierarchically porous Cu-doped ZnO nanostructures were formed on indium-tin-oxide (ITO)-coated glass substrates by using a template-free electrochemical deposition method. Field-emission scanning electron microscopy images showed that the density of the Cu-doped ZnO porous nanostructures increased with increasing Cu concentration. X-ray diffraction patterns showed that the lattice spacing of the (002) plane for the Cu-doped ZnO porous nanostructures decreased with increasing Cu concentration. Photoluminescence spectra for the Cu-doped ZnO porous nanostructures formed on the ITO-coated glass substrates showed that the dominant emission peak related to the band-to-band transitions shifted to a higher wavelength side with increasing Cu concentration.

Keywords: Cu-doped ZnO; Hierarchically porous nanostructures; Structural property; Optical property; Electrochemical deposition method

This Article

  • 2014; 15(2): 136-139

    Published on Apr 30, 2014