Abstract

AbstractThin films of Ag2O were deposited on a cooled substrate by cathodic sputtering of silver in a low pressure oxygen atmosphere. The effects of ageing at room temperature and the effects due to slight heating in air are studied through the changes of electrical resistance, optical absorption and photoconductivity. It is proposed that the fresh films contain a greater excess of oxygen over the stoichiometric Ag2O than the final higher resistance material. Unless mechanically disturbed, the films did not reduce to silver over periods up to one year.

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