Orientation control of β-NaGaO2 thin film: A precursor for β-CuGaO2 as a thin-film solar cell absorber

Issei Suzuki, Masatoshi Tanemura, Takahisa Omata

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

The β-NaGaO2 thin film is a precursor film for the fabrication of a β-CuGaO2 thin film by ion exchange, which is expected to be applicable to a thin film solar cell. The β-NaGaO2 thin films were fabricated by electron beam evaporation, and they showed substrate dependence of the crystal orientation, which is in contrast to the recently reported β-NaGaO2 films obtained by sputtering that exhibited no substrate dependence. The difference observed for evaporation and sputtering was discussed based on the kinetic energy of the particles impinging on the substrate during the deposition. An appropriate orientation of the β-NaGaO2 film for ion exchange was discussed in terms of the in-plane shrinkage generated during the ion exchange from β-NaGaO2 to β-CuGaO2.

Original languageEnglish
Pages (from-to)872-875
Number of pages4
JournalJournal of the Ceramic Society of Japan
Volume125
Issue number12
DOIs
Publication statusPublished - 2017 Dec
Externally publishedYes

Keywords

  • Electron beam evaporation
  • Ion exchange
  • Sputtering
  • Ternary wurtzite
  • Thin film

ASJC Scopus subject areas

  • Ceramics and Composites
  • Chemistry(all)
  • Condensed Matter Physics
  • Materials Chemistry

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