‘Electric-paint displays’ with carbon counter electrodes

‘Electric-paint displays’ are electrochromic displays with dyed nanostructured metal-oxide electrodes, e.g. viologen-derivatized nanostructured titanium dioxide electrodes. Such displays are particularly promising for applications with low switch frequency, large segment areas, and high demands on c...

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Bibliographic Details
Published in:Electrochimica acta 2001-04, Vol.46 (13), p.2187-2193
Main Authors: Edwards, M.O.M., Boschloo, G., Gruszecki, T., Pettersson, H., Sohlberg, R., Hagfeldt, A.
Format: Article
Language:English
Subjects:
Applied sciences
Carbon electrode
devices
Display
Electrochromic display
Electronics
Exact sciences and technology
methyl viologen
nanocrystalline tio2
Nanostructured electrode
nanostructured tio2 films
Titanium dioxide
Viologen
windows
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Summary:‘Electric-paint displays’ are electrochromic displays with dyed nanostructured metal-oxide electrodes, e.g. viologen-derivatized nanostructured titanium dioxide electrodes. Such displays are particularly promising for applications with low switch frequency, large segment areas, and high demands on colours, background brightness, and large viewing-angles. The concept is simple and well suited for inexpensive industrial production methods. We present blue-on-white electric-paint displays with porous carbon counter electrodes. The initial results with laboratory prototypes are promising. The switch time is about 1/2 s and the reflectance in the bleached state is as high as 40–55% in the visible region. Furthermore, the display prototypes sustain more than 100 000 switching cycles without severe degradation. The results from spectroelectrochemical measurements on the assembled displays are presented.
ISSN:0013-4686
1873-3859
1873-3859
DOI:10.1016/S0013-4686(01)00398-X