Study of the large non-stoichiometry of copper(I) oxide on oxidized copper (T pO2 = 0.21 atm)
✍ Scribed by M. Lenglet; J. M. Machefert; J. M. Claude; B. Lefez; J. Lopitaux; A. D'Huysser
- Publisher
- John Wiley and Sons
- Year
- 1990
- Tongue
- English
- Weight
- 321 KB
- Volume
- 16
- Category
- Article
- ISSN
- 0142-2421
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✦ Synopsis
Abstract
The study of the oxidation of copper at low temperatures shows that the metal is not recovered by a pure stoichiometric Cu~2~O but by a copper(I) oxide phase with the same crystalline structure as Cu~2~O, and that this phase exhibits a very large non‐stoichiometry (composition between Cu~60~O~40~ and Cu~63~O~37~). These results explain that the UV‐Vis‐NIR spectra are different from those of high‐purity Cu~2~O crystals and the position of the absorption bands attributable to defects could be justified easily by the Bohr theory of the hydrogen atom applied to semiconductors.