Preparation of covellite and digenite thin films by an intermittent spray pyrolysis deposition method

J. Madarász, Masayuki Okuya, Shoji Kaneko

Research output: Contribution to journalArticle

34 Citations (Scopus)

Abstract

Intermittent spray pyrolysis of 0.01-0.20 M aqueous solutions of CuCl (dissolved in the presence of 3-fold molar amount of thiourea) onto a heated alkali-free glass substrate in air already at 225-275°C resulted in various thin films of CuS (covellite) and/or Cu1.8S (Cu9S5, digenite). A combination of low pyrolysis temperatures (225-250°C) and low solution concentrations (0.01-0.02 M) has resulted in the formation of thin solid CuS films. At a pyrolysis temperature of 275°C Cu1.8S films have been obtained. The higher concentration range (0.05-0.20 M) has been found favorable for simultaneous formation of Cu1.8S and CuS. In the two-phase layers the crystal growth of CuS has seemed to be limited, whilst the growth of Cu1.8S has been preferentially favored especially on its (0 0 15) lattice plane.

Original languageEnglish
Pages (from-to)2113-2116
Number of pages4
JournalJournal of the European Ceramic Society
Volume21
Issue number10-11
DOIs
Publication statusPublished - 2001

Fingerprint

Spray pyrolysis
Pyrolysis
Thin films
Thioureas
Crystal growth
Glass
Temperature
Substrates
Air
Thiourea
Alkalies
Crystallization
cupric sulfide

Keywords

  • Copper sulfides
  • Films
  • X-ray methods

ASJC Scopus subject areas

  • Ceramics and Composites

Cite this

Preparation of covellite and digenite thin films by an intermittent spray pyrolysis deposition method. / Madarász, J.; Okuya, Masayuki; Kaneko, Shoji.

In: Journal of the European Ceramic Society, Vol. 21, No. 10-11, 2001, p. 2113-2116.

Research output: Contribution to journalArticle

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