Method of making an electrochromic material and new electrochrom

Details Method of making an electrochromic material and new electrochrom Method of making an electrochromic material and new electrochrom

1991-11-04

1992-07-14

LaRoche, Eugene R.

Optical: systems and elements

Optical modulator

Light wave temporal modulation

359273, G02F 115, G02F 101

Patent

active

051308410

ABSTRACT:
This specification discloses vanadium oxide reduced by a codeposited reducing agent as an electrochromic material. The reducing agent may be a metal or a nonstoichiometric metal oxide. Preferred metals disclosed are vanadium and gold. Preferred metal oxides disclosed are nonstoichiometric lead oxide and nonstoichiometric bismuth oxide. The specification also discloses a method of making a nonelectrochromic, fully oxidized vanadium oxide [V.sub.2 O.sub.5 ] into an electrochromic material. The method includes the step of codepositing the fully oxidized vanadium oxide on a support for an electrochromic device along with a material which reduces the fully oxidized vanadium oxide to a less than fully oxidized state in which the reduced vanadium oxide is electrochromic.

REFERENCES:
patent: 4645308 (1987-02-01), Tracy et al.
patent: 4960324 (1990-10-01), Brown

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