Switchable window based on electrochromic polymers
First Claim
1. A method for making a high quality vanadium oxide film suitable for use as a counter electrode in an electrochromic device, comprising the steps of:
- (a) providing a substantially transparent and conductive substrate;
(b) attaching an additional conductive material to a portion of the substantially transparent and conductive substrate, such that the additional conductive material is electrically coupled to the substantially transparent and conductive substrate; and
(c) producing the counter electrode for use in the electrochromic device by depositing a thin film of vanadium oxide onto the substantially transparent and conductive substrate using cyclic voltammetry, wherein the step of using cyclic voltammetry comprises the step of applying the cyclic voltammetry potential to the additional conductive material to ensure a substantially uniform vanadium oxide film is deposited on the substantially transparent and conductive substrate.
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Accused Products
Abstract
Syntheses of a new blue EC monomer (ProDOT-MePro), and a new red EC monomer (ProDOP-Et2) are described. Two additional new types of EC monomers based on 3,4-alkylenedioxythiophene include fluorinated EC monomers and an EC monomer including silicon. EC polymer devices having more than one different color EC polymer to enable additional colors to be provided using subtractive color mixing are also described, as well as EC polymer devices incorporating a logo, image, or text, are generally obscured when the device is colored, but become visible when the device is not colored. Also described are EC polymer devices that include a cathodic EC polymer layer, a gel electrolyte, a counter electrode, and a reference electrode. Working prototypes of such devices exhibit significant increases in the speed of transition of the EC device from a colored state to a transparent state.
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Citations
6 Claims
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1. A method for making a high quality vanadium oxide film suitable for use as a counter electrode in an electrochromic device, comprising the steps of:
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(a) providing a substantially transparent and conductive substrate; (b) attaching an additional conductive material to a portion of the substantially transparent and conductive substrate, such that the additional conductive material is electrically coupled to the substantially transparent and conductive substrate; and (c) producing the counter electrode for use in the electrochromic device by depositing a thin film of vanadium oxide onto the substantially transparent and conductive substrate using cyclic voltammetry, wherein the step of using cyclic voltammetry comprises the step of applying the cyclic voltammetry potential to the additional conductive material to ensure a substantially uniform vanadium oxide film is deposited on the substantially transparent and conductive substrate. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification