211 results about "Electrochromic devices" patented technology

This disclosure provides compositions of electrochromic dyes, functionalized electrochromic dyes and dye macromers which may be incorporated into electrochromic devices with tailored optical properties. The disclosure provides an electrochromic dye with an attached functionalization group wherein the said dye colors by at least one of oxidation and reduction and contains at least two moieties wherein a first moiety is electrochromic and a second moiety is an electrochromic moiety, an electron donating moiety, or an electron receiving moiety and wherein the functionalization group. This disclosure also provides EC compositions and devices for controlling color.

The invention relates to the technical field of electrochromic devices, in particular to an interface-enhanced gel-based electrochromic device and a preparation method thereof. The interface enhanced gel-based electrochromic device comprises a bottom electrode layer, a first modification layer, a gel electrolyte layer, a second modification layer, an electrochromic layer and a top electrode layer which are arranged in sequence, wherein the first modification layer and the second modification layer are independently modification layers based on catechol or derivatives thereof. According to the interface-enhanced gel-based electrochromic device, the excellent ion migration characteristic of the hydrogel electrolyte is utilized, and the strength and toughness of the electrolyte can be improved. The gel electrolyte layer based on the structure provided by the invention has excellent interface bonding force, and is convenient for ions to quickly migrate under the driving of an external field, so that the electrochromic device has excellent cycling stability.

Polymeric ion conductive layers and electrochromic devices utilizing the same are described. The polymeric ion conductive layer may include a polymer having a Shore hardness of greater than 80A, an electrolyte dispersed in the polymer, and a plasticizer dispersed in the polymer. The polymeric ion conducive layer may have no creep at elevated temperatures. The polymeric ion conductive layer may have an ionic conductivity of greater than or equal to about 1E-5 S / cm, a haze of less than 3%, and a light transmission of greater than or equal to about 80%. An electrochromic device may include a first optically transparent layer, a second optically transparent layer, and electrochromic layers including the polymeric ion conductive layer interposed between the first and second optically transparent layers.

The invention aims at providing an electrochromic device based on ammonium ion aqueous electrolyte and a preparation method and application of the electrochromic device, and belongs to the technical field of electrochromic devices. The transparent conductive glass is composed of a transparent conductive glass substrate layer, an ion storage layer, a hydrogel ion electrolyte layer, an electrochromic layer and a top transparent conductive layer. The electrolyte layer of the electrochromic device based on the ammonium ions adopts the hydrogel ion electrolyte, so that the migration process of the ammonium ions can be effectively promoted, and the long-cycle stability of the electrochromic device based on the ammonium ions is improved. The electrochromic device based on ammonium ions has wide application prospects in the fields of intelligent systems, intelligent windows, intelligent electronic products and the like.

The invention discloses a metal grid transparent conductive film which sequentially comprises a transparent base material layer, a metal grid layer, a transition layer and a protection layer from bottom to top. The manufacturing method comprises the steps of pretreating the transparent base material, preparing the metal seed layer, performing laser direct writing patterning, performing electroplating thickening to form the metal grid layer, preparing the transition layer and the protective layer, and performing performance test and adjustment. The hexagonal honeycomb grid structure and the arc edge design are adopted, and the problem of metal grid electric field concentration is effectively solved; through the arrangement of the transition layer, the interface bonding force of the metal grid is improved; the protection layer and the transition layer cooperate to improve the corrosion resistance of the film; the problems that an existing transparent conductive material is high in cost, poor in flexibility and insufficient in interface compatibility, and an electrochromic device is concentrated in electric field, short in service life and the like are effectively solved, and the transparent conductive material can be widely applied to building intelligent windows, automobile anti-dazzle rearview mirrors, flexible display panels and other electrochromic devices and has important industrial application value.

The invention discloses a reversible metal electro-deposition type electrochromic device with a high response speed. The reversible metal electro-deposition type electrochromic device comprises a first conductive base material, a second conductive base material, a sealant and a reversible electro-deposition solution, the sealant is arranged between the peripheral areas of the first conductive base material and the second conductive base material along the circumferential direction, so that the two conductive base materials are mutually combined in a sealing manner and a cavity is defined; the reversible electrodeposition solution is arranged in the cavity; wherein the reversible electro-deposition solution comprises a reversible metal electro-deposition material and a medium body for promoting metal electro-deposition and dissolution; under the action of external field voltage, the reversible metal electrodeposition material can perform reversible metal electrodeposition and dissolution operation on the surface of the conductive substrate. According to the electrochromic device, rapid switching from a transparent state to a mirror surface state is achieved, stable switching between high reflectivity and high transparency is achieved, and the requirements for high-performance electrochromic devices in the fields of intelligent windows, display equipment, optical switches and the like can be met.

The present application is applicable to the technical field of electrochromism. Provided are an electrochromic-device control method and apparatus, and a storage medium and an electrochromic-device control system. The method comprises: acquiring the degree of aging of an electrochromic device; on the basis of the degree of aging, determining charging parameters corresponding to the electrochromic device; and charging the electrochromic device on the basis of the charging parameters. By means of the method, electrochromic devices with different degrees of aging have corresponding charging / discharging parameters, such that charging parameters having different degrees of aging are used to compensate for the different degrees of aging, and the ranges of transmittance of the electrochromic devices are kept consistent, thereby improving the usage experience for a user.

The application discloses a physical vapor deposition device, an electrochromic device and a preparation method thereof, and relates to the technical field of electrochromic devices. The preparation method comprises the following steps: sputtering and depositing an electrochromic layer of WO3 on the surface of a first ITO layer, and the oxygen content is any value in the range of 42.5% to 52.5%; sputtering and depositing a pre-set thickness of a tungsten oxide ion conduction layer on the electrochromic layer, and the oxygen content of the corresponding chamber is any value in the range of 35% to 45%; sputtering and depositing an ion storage layer containing lithium ions on the ion conduction layer; depositing a second ITO layer on the ion storage layer, and obtaining the electrochromic device after vacuum annealing treatment and cooling treatment; wherein the deposition temperature of the second ITO layer is any value in the range of 350 DEG C to 400 DEG C, and the annealing temperature of the vacuum annealing treatment is any value in the range of 450 DEG C to 500 DEG C. The electrochromic device prepared by the application has the characteristics of high transmittance and low sheet resistance.

The invention relates to a counter electrode for an electrochromic device. Embodiments herein relate to electrochromic stacks, electrochromic devices, and methods and apparatus for making such stacks and devices. In various embodiments, an anodically colored layer in an electrochromic stack or device is fabricated to include a heterostructure, e.g., a heterogeneous composition and / or morphology. Such heterogeneous anodically colored layers may be used to better tune the properties of the device.

This application provides a color-tuning driving device and control method for an electrochromic device. A microprocessor receives control signals from a host computer, allowing the color-tuning of the electrochromic device to be programmed via the host computer to control the expected voltage waveform. This effectively solves the problem of color-tuning control stability in electrochromic devices. After receiving the control signal from the host computer, the microprocessor outputs a voltage waveform signal and a duty cycle signal. The voltage waveform signal is amplified by a power amplifier unit and then turned on by a controllable switch unit, serving as the driving voltage for the electrochromic device's color change. The duty cycle signal is input to the gate driving unit, which controls the on-time and off-time of the controllable switch unit based on the duty cycle signal, thereby controlling the on and off-time of the driving voltage of the electrochromic device. This eliminates the need for manual switching of the driving voltage, improving the stability and efficiency of color-tuning in electrochromic devices.

The invention relates to a viologen derivative electrolyte solution with an electrochromic characteristic and a preparation method and application thereof. The electrolyte solution comprises a viologen derivative and ascorbic acid, the viologen derivative is selected from 1-butyl-4, 4 '-dipyridyl or 1-butyl-1'-(2-propenyl)-4, 4 '-dipyridyl, and the viologen derivative is selected from 1-butyl-4, 4'-dipyridyl or 1-butyl-1 '-( The obtained electrolyte solution can be used for preparing an electrochromic device. Compared with the prior art, the obtained electrochromic device based on the viologen derivative electrolyte can realize color conversion from colorless or brown to purple black under relatively small voltage, and has relatively large light modulation amplitude and relatively high response speed.

Thin-film devices, for example electrochromic devices for windows, and methods of manufacturing are described. Particular focus is given to methods of patterning optical devices. Various edge deletion and isolation scribes are performed, for example, to ensure the optical device has appropriate isolation from any edge defects. Methods described herein apply to any thin-film device having one or more material layers sandwiched between two thin film electrical conductor layers. The described methods create novel optical device configurations.

The invention discloses physical vapor deposition equipment, an electrochromic device and a preparation method of the electrochromic device, and relates to the technical field of electrochromic devices. The preparation method comprises the following steps: sputtering and depositing the WO3 electrochromic layer on the surface of the first ITO layer, wherein the oxygen content is any one of 42.5-52.5%; sputtering and depositing a tungsten oxide ion conducting layer with a preset thickness on the electrochromic layer, wherein the oxygen content of the corresponding chamber is any one of 35%-45%; sputtering and depositing an ion storage layer containing lithium ions on the ion conduction layer; a second ITO layer is deposited on the ion storage layer, and the electrochromic device is prepared after vacuum annealing treatment and cooling treatment; wherein the deposition temperature of the second ITO layer is any one value from 350 DEG C to 400 DEG C, and the annealing temperature of the vacuum annealing treatment is any one value from 450 DEG C to 500 DEG C. The electrochromic device prepared by the invention has the characteristics of high transmittance and low sheet resistance.

The invention relates to the technical field of electrochromic devices, in particular to a slip ring fastening double-network hydrogel-based electrochromic device and a preparation method thereof. The slip ring fastening double-network hydrogel-based electrochromic device comprises a first electrode, an electrochromic layer, a double-network structure gel electrolyte layer and a second electrode which are arranged in sequence, the double-network structure gel electrolyte layer comprises a double-network structure formed by five-membered ring sodium alginate and long-chain polyvinyl alcohol through interpenetration, and a slidable annular organic matter binding the double-network structure. The slidable annular organic matter is introduced into the interpenetrating double-network gel electrolyte, the purpose is to bind double networks together, the elasticity of the electrolyte is improved, the mechanical toughness, strength and Young modulus of the electrolyte are improved, molecules of an annular structure can slide in the stretching or compression process, and therefore the elasticity of the electrolyte is improved. Therefore, the gel layer is prevented from being broken or damaged due to stress concentration.

The invention belongs to the technical field of electrochromic devices, and particularly relates to a silicon dioxide gel integrated electrochromic device and a preparation method thereof. The integrated electrochromic device is of a three-layer structure which is a transparent conductive substrate, color-changing gel and a transparent conductive substrate. The color-changing gel is composite gel of silicon dioxide gel and a metal oxygen cluster material, proper redox equilibrium species and ionic liquid are added, and an integrated electrochromic device with high optical contrast and ultra-long cycle stability is obtained.

Thin-film devices, for example electrochromic devices for windows, and methods of manufacturing are described. Particular focus is given to methods of patterning optical devices. Various edge deletion and isolation scribes are performed, for example, to ensure the optical device has appropriate isolation from any edge defects. Methods described herein apply to any thin-film device having one or more material layers sandwiched between two thin film electrical conductor layers. The described methods create novel optical device configurations.

The present invention discloses two aromatic ester electrochromic materials with helical dipropyldioxythiophene as the core, and applies them to electrochromic devices. Compared with traditional aromatic ester electrochromic materials, the two novel electrochromic materials with dipropyldioxythiophene as the core designed by the present invention have the advantages of simple synthesis route, low cost, simple device preparation, high optical contrast, fast response rate, good cycle stability, etc., and have potential application value.

The invention provides a solid electrolyte, a preparation method thereof and an electrochromic device, and belongs to the technical field of electrochromic devices. Vanadium-based oxide is added as a catalyst, and a mixed solution of a cross-linking agent containing carbon-carbon double bonds, an electrolyte salt, an ionic liquid, a curing agent, a first solvent and a second solvent is thermally cured to prepare the solid electrolyte. The curing agent is at least one of an amine curing agent, an anhydride curing agent or a thiol curing agent. The solid electrolyte obtained by thermocuring has the characteristics of high transparency, good flexibility and high stripping force, can form a film with the thickness of less than 100 microns, and is suitable for preparing a flexible electrochromic device; the electrochromic device prepared from the solid electrolyte is relatively good in cyclic aging stability.

The present disclosure describes electrochromic devices comprising transparent conductive layer acting as an electrode, an active electrochromic film, an ion conductor, and an ion storage film at least one of which comprises at least one MXene material.

The application discloses a display device and a manufacturing method thereof. The display device comprises a first substrate and a second substrate arranged oppositely and an electrochromic device between the first substrate and the second substrate. The electrolyte layer of the electrochromic device is formed by curing a pre-solution. The pre-solution comprises, in terms of mass parts, 8-20 parts of a polymer, 29-44 parts of a cross-linking agent, 29-44 parts of a solvent, 0.145-0.22 parts of an initiator and 4-22 parts of a lithium salt and deionized water. In the process of forming the electrolyte layer of the electrochromic device by using the pre-solution, the pre-solution is cured and formed after printing. In the printing process, a barrier wall does not need to be arranged to block adjacent two electrochromic devices, so that the manufacturing process of the pixelated arrangement electrochromic device is greatly simplified, and the manufacturing cost and difficulty of the display device are reduced.

Electrochromic devices and components thereof and systems and methods for controlling electrochromic devices are disclosed. Further, electrochromic materials, electrochromic compositions and electrochromic layers useful for the devices and systems can be in the form of a gel. The present disclosure also provide methods to fabricate electrochromic devices and components thereof, electrochromic compositions, layers and gels.

Various embodiments herein relate to electrochromic devices and electrochromic device precursors, as well as methods and apparatus for fabricating such electrochromic devices and electrochromic device precursors. In certain embodiments, the electrochromic device or precursor may include one or more particular materials such as a particular electrochromic material and / or a particular counter electrode material. In various implementations, the electrochromic material includes tungsten molybdenum oxide. In these or other implementation, the counter electrode material may include nickel tungsten oxide, nickel tungsten tantalum oxide, nickel tungsten niobium oxide, nickel tungsten tin oxide, or another material.

The invention discloses a novel electrochromic device and a manufacturing method. The novel electrochromic device comprises a first substrate layer, a first conductive layer, a first silver paste layer, a first wiring layer, a packaging layer, an electrochromic layer, a second silver paste layer, a second wiring layer, a second conductive layer and a second substrate layer. The method comprises the following steps: etching ITO glass, cutting off an ITO conductive region, and carrying out conductive silver paste screen printing on the etched region; the overall sheet resistance of the ITO glass is reduced by using the high conductivity of the conductive silver paste, and meanwhile, the fine silk-screen width ensures that human eyes cannot perceive, so that the overall impression is ensured; the test result of an electrochromic device prepared from the ITO glass with lower sheet resistance obtained by the method shows that the coloring rate of the electrochromic device is obviously improved; the problem that a large-size electrochromic product is low in coloring rate is effectively solved.

The invention relates to the technical field of electrochromic devices, in particular to an electrochromic device with ultra-long bistable holding time and a preparation method of the electrochromic device. The ultra-long bistable retention time electrochromic device comprises a first transparent electrode, an electrochromic layer, an electron blocking layer, an ion conduction layer and a second transparent electrode which are arranged in sequence, and the ion conduction layer contains a pi-bridged electron donor-electron acceptor material serving as a complex. According to the invention, by optimizing the composition of the ion conduction layer and regulating the molecular structure, the migration channel and active sites of cations are improved, so that the color retention performance of the device is greatly improved and can reach one week or more.

This disclosure relates generally to solution processed low temperature metal oxide, metal bronze or polyoxometalate materials as charge storage material used in electrochromic devices, charge storage material and electrochromic devices comprising the materials and methods of making and using the same.

The invention relates to the field of organic electrochromic materials, in particular to a transparent conductive material, a preparation method and application. According to the transparent conductive material, two independent carbonyl groups are introduced into a molecular main chain at the same time, accurate synergy of energy level, polarity and charge transfer performance is achieved through differential regulation and control of oxygen or nitrogen atoms, the polymer can be used as an ion storage layer, an electrode modification layer or an active functional layer in an electrochromic device, and the electrochromic device has a wide application prospect. The material can realize rapid and reversible optical modulation under a low voltage (+ / -1.0 V), has high optical contrast ([delta] T550gt, 65%), short response time (lt, 2s) and excellent cycle stability (more than 3 * 104 cycle retention rate gt, 95%), and has wide application prospects in the fields of intelligent display, energy-saving buildings and flexible electronics.

The present invention relates to novel organic (i.e., metal-free) catechol-based irreversible electrochromic matrix, wherein a catechol-based molecule irreversibly changes its properties upon application of an electrically-induced stimulus. The invention further relates to the production of irreversible electrochromic devices comprising a repository containing the catechol-based molecule, to the manufacture of said electrochromic devices and to the use thereof.

The invention discloses a method for preparing a porous nickel tungsten oxide film based on a vapor deposition method. The method comprises the following steps: converting a reactant precursor and a substrate heating precursor into precursor gas; introducing deposition gas to carry out plasma-assisted gas phase reaction deposition on the substrate; selective etching gas and auxiliary gas are introduced for etching and circulation; and carrying out annealing treatment under a protective atmosphere. The invention also discloses the porous nickel tungsten oxide film prepared by the method, an ion storage device and an electrochromic device. According to the method, PECVD equipment is adopted, fluorine ions are utilized to selectively etch tungsten oxide, different reaction gases are alternately introduced to realize alternation of film deposition and etching under the assistance of plasma, the porous and loose Ni-W-O film is prepared, and the requirements of rapid intercalation and deintercalation of lithium ions are met. The preparation of the inorganic porous anode material with high structural stability and rapid circulating discoloration capability is realized in one set of equipment, and a new method is provided for efficient production of large-size inorganic all-solid-state electrochromic devices.

Electrochromic devices having buffer layer(s) promoting electron transfer between the second transparent electrode and second electrochromic layer while concurrently reducing or inhibiting deleterious chemical interaction between the second electrochromic layer and the second electrode and / or maintaining the conductive state of the second electrode while the device changes from a low transparency of approximately 10-20% transmittance in the visible region to a high transparency of approximately 75% to 95% transmittance with at least a 70% difference in transmittance between the low and high transmittance states and promotes longevity of the device. In certain aspects, the electrochromic devices change from a low transparency state having a gray color to a high transparency state that is substantially colorless within 20 seconds of applying the selective electrical potential to the electrochromic device. The electrochromic device is operated by electrically holding and controlling electrons going into the electrochromic device so a surface reflectivity level varies.

Aspects of this disclosure concern controllers and control methods for applying a drive voltage to bus bars of optically switchable devices such as electrochromic devices. Such devices are often provided on windows such as architectural glass. In certain embodiments, the applied drive voltage is controlled in a manner that efficiently drives an optical transition over the entire surface of the electrochromic device. The drive voltage is controlled to account for differences in effective voltage experienced in regions between the bus bars and regions proximate the bus bars. Regions near the bus bars experience the highest effective voltage. In some cases, feedback may be used to monitor an optical transition. In these or other cases, a group of optically switchable devices may transition together over a particular duration to achieve approximately uniform tint states over time during the transition.