Self bleaching photoelectrochemical-electrochromic device

Patent · Tue Apr 09 04:00:00 EDT 2002

OSTI ID:874340

Bechinger, Clemens S ^[1]; Gregg, Brian A ^[2]

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1. Konstanz, DE
2. Golden, CO

A photoelectrochemical-electrochromic device comprising a first transparent electrode and a second transparent electrode in parallel, spaced relation to each other. The first transparent electrode is electrically connected to the second transparent electrode. An electrochromic material is applied to the first transparent electrode and a nanoporous semiconductor film having a dye adsorbed therein is applied to the second transparent electrode. An electrolyte layer contacts the electrochromic material and the nanoporous semiconductor film. The electrolyte layer has a redox couple whereby upon application of light, the nanoporous semiconductor layer dye absorbs the light and the redox couple oxidizes producing an electric field across the device modulating the effective light transmittance through the device.

• Research Organization: MIDWEST RESEARCH INSTITUTE
• DOE Contract Number: AC36-99GO10337
• Assignee: Midwest Research Institute (Kansas City, MO)
• Patent Number(s): US 6369934
• Application Number: 09/631,201
• OSTI ID: 874340
• Country of Publication: United States
• Language: English

Related Subjects

/359/250/252/345/
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adsorbed
application
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electric
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electrically
electrically connected
electrochromic
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electrode
electrolyte
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light
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nanoporous
oxidizes
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photoelectrochemical-electrochromic
producing
redox
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semiconductor
semiconductor layer
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