Metal hydride switchable mirrors: Factors influencing dynamic range and stability

Publication Type

Journal Article

Date Published

03/2006

Abstract

Palladium-coated magnesium–manganese–nickel films behave as gasochromic switchable mirrors, becoming transparent on exposure to dilute hydrogen, and reverting to a mirror state on exposure to air. The cycling stability of the optical switching depends upon preservation of the integrity of the Pd catalyst overlayer. Alloying between Mg and Pd causes interdiffusion of the two elements, and leads to degradation in switching speed and eventual deactivation. Incorporation of a thin niobium oxide barrier layer between the active magnesium alloy film and the Pd layer substantially improves the cycling stability of the mirror.

Journal

Solor Energy MaterialsSolar Energy Materials and Solar Cells

Volume

90

Year of Publication

2006
485

Issue

4

Pagination

485-490