Electrochromic device using transition metal oxide and method of

Details Electrochromic device using transition metal oxide and method of Electrochromic device using transition metal oxide and method of

1987-07-17

1988-11-15

LaRoche, Eugene R.

G02F 101

Patent

active

047844779

ABSTRACT:
The invention relates to an electrochromic (EC) device having oppositely arranged two substrates at least one of which is transparent and each of which is coated with an electrode film on the inside surface, a first EC layer which is formed on the electrode film of one substrate and is formed of a transition metal oxide that takes on color in its electrochemically reduced state, such as WO.sub.3, an opposite EC layer which is formed on the electrode film of the other substrate and is formed of another EC material, such as a polytriphenylamine that takes on color in its electrochemically oxidized state, and an electrolyte solution which uses a nonaqueous solvent and occupies the space between the two substrates. According to the invention, the transition metal oxide layer contains such an amount of adsorption water that the concentration of water in the electrolyte solution in the device becomes more than 0% and not more than 0.3% by weight. This is effective for enhancement of the durability of the transition metal oxide layer and also for improvements in the response characteristics of the metal oxide layer as an EC layer. The transition metal oxide layer is formed as a film by a usual deposition technique and then is immersed in a solution of an electrolyte in an organic solvent containing a suitable amount of water, which is usually not less than 0.5 vol % and not more than 30 vol %.

REFERENCES:
patent: 4223339 (1980-11-01), Leibowitz et al.
patent: 4348077 (1982-09-01), Kondo et al.
patent: 4475795 (1984-10-01), Leibowitz et al.
patent: 4565860 (1986-01-01), Murofushi et al.
patent: 4645307 (1987-02-01), Miyamoto et al.
Tetsuzo Yoshimura et al., "Effect of Surface States of WO.sub.3 on the Operating Characteristics of Thin Film Electrochromic Devices", Thin Solid Films, 101 (1983) pp. 141-151.

Affiliated with

Also associated with

Rating

Electrochromic device using transition metal oxide and method of does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Electrochromic device using transition metal oxide and method of, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electrochromic device using transition metal oxide and method of will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1100517