Formation of cellular films consisting of wurtzite-type zinc oxide nanosheets by mediation of phosphate anions

Satoshi Yamabi, Junko Yahiro, Satoko Iwai, Hiroaki Imai

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

We successfully prepared a wide variety of wurtzite-type zinc oxide films exhibiting columnar, cellular and densely packed morphologies in a simple aqueous solution system containing phosphate anions. As the phosphate concentration increased, the shape of crystalline units composing the films varied from hexagonal needles into seaweed-like sheets. A novel type of open cellular structures was obtained by assembly of nanoscale zinc oxide sheets covered with phosphate. Specific adsorption of phosphate anions on (001) of the wurtzite-type crystal flattened the crystal grains, and then induced the structural evolution into a cellular form. A blue shift of the absorption edge suggested that the quantum size effect occurred in the nanoscale platy crystals composing the cellular films.

Original languageEnglish
Pages (from-to)23-30
Number of pages8
JournalThin Solid Films
Volume489
Issue number1-2
DOIs
Publication statusPublished - 2005 Oct 1

Keywords

  • Nanosheets
  • Phosphate ions
  • Thin films
  • Zinc oxide

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Materials Chemistry

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