Reversible electrodeposition optical modulation device with conducting polymer counter electrode
First Claim
1. An optical modulation device for controlling propagation of electromagnetic radiation, comprising:
- an optical modulation electrode that is substantially transparent to the radiation;
a counter electrode comprising a layer of a conducting polymer; and
an electrolyte containing a complexing anion and ions of an electrodepositable metal, said electrolyte being disposed between and in electrical contact with said optical modulation electrode and said counter electrode, whereby the electrodepositable metal is reversibly electrodeposited on said optical modulation electrode so as to affect propagation of the electromagnetic radiation.
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Accused Products
Abstract
An optical modulation device includes an electrolyte containing electrodepositable metal ions sandwiched between a conducting polymer counter electrode and an optical modulation electrode involving reversible metal electrodeposition. The conducting polymer counter electrode does not generate mobile reactive species, and avoids the light blocking associated with grid or dot matrix electrodes involving reversible metal electrodeposition. A polyaniline counter electrode in a smart window device employing a reversible electrochemical mirror modulation electrode provides high light transmission, fast switching, and coloration to mask the backside of the mirror electrode.
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Citations
23 Claims
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1. An optical modulation device for controlling propagation of electromagnetic radiation, comprising:
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an optical modulation electrode that is substantially transparent to the radiation;
a counter electrode comprising a layer of a conducting polymer; and
an electrolyte containing a complexing anion and ions of an electrodepositable metal, said electrolyte being disposed between and in electrical contact with said optical modulation electrode and said counter electrode, whereby the electrodepositable metal is reversibly electrodeposited on said optical modulation electrode so as to affect propagation of the electromagnetic radiation. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. An optical modulation device for controlling propagation of electromagnetic radiation, comprising:
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an optical modulation electrode comprising a layer of a transparent oxide conductor deposed on a first transparent glass or plastic substrate;
a counter electrode comprising a layer of a conducting polymer deposed on a layer of an electrically conducting material on a second transparent glass or plastic substrate; and
an electrolyte containing a complexing anion and ions of an electrodepositable metal, said electrolyte being disposed between and in electrical contact with said optical modulation electrode and said counter electrode, whereby the electrodepositable metal is reversibly electrodeposited on said optical modulation electrode so as to affect propagation of the electromagnetic radiation. - View Dependent Claims (22)
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23. An optical modulation device for controlling propagation of electromagnetic radiation, comprising:
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an optical modulation electrode comprising a thin platinum layer on a layer of indium tin oxide deposed on a first glass or plastic substrate;
a counter electrode comprising a layer of polyaniline conducting polymer on a layer of indium tin oxide deposed on a second glass or plastic substrate; and
an ionic liquid electrolyte containing silver cations and halide anions and disposed between and in electrical contact with said optical modulation electrode and said counter electrode, whereby silver metal is reversibly electrodeposited on said optical modulation electrode so as to affect propagation of the electromagnetic radiation.
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Specification