Fabrication of transparent ceria films by spray deposition without post firing

Ruwan Gallage, Atsushi Matsuo, Tomoaki Watanabe, Nobuhiro Matsushita, Masahiro Yoshimura

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)

Abstract

Most of the existing methods of crystalline ceria (CeO2) films preparation consume much time and cost. Here we describe a straightforward and relatively cost-effective method of CeO2 films preparation that involves direct spray deposition process on glass substrates at moderate temperatures (300-400 °C) using cerium acetate precursor in mixture of water and ethanol. X-ray diffraction analysis of obtained films revealed that they were polycrystalline, at least for a certain extent, with cubic fluorite structure and showed the existence of nanocrystallites. Scanning electron microscopic analysis showed that the films were crack-free and consists of nanocrystalline(<10 nm) ceria. Furthermore, the film showed high transparency in the visible and near-infrared region with calculated optical band gap (E g) value of 3.06-3.08 eV. The film formation mechanism to obtain the transparent film has also been proposed.

Original languageEnglish
Pages (from-to)33-39
Number of pages7
JournalJournal of Electroceramics
Volume22
Issue number1-3
DOIs
Publication statusPublished - 2009 Feb 1

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Condensed Matter Physics
  • Mechanics of Materials
  • Electrical and Electronic Engineering
  • Materials Chemistry

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