Abstract: An electrochromic device includes a first insulating substrate; a first conducting layer disposed over the first insulating substrate; an electrochromic layer disposed over the first conducting layer, an electrolyte layer disposed over the electrochromic layer; a second conducting layer disposed over the electrolyte layer; and a second insulating substrate disposed over the second conducting layer. The electrochromic layer includes an electrochromic polymer having a polymer backbone comprising one or more meta-conjugated linkers (MCLs) and one or more aromatic moieties (Ars). Each of the one or more MCLs is partially conjugated with one of the one or more Ars at a meta position of the one or more MCLs. The thickness of the electrochromic layer is from 10 nm to 5800 nm resulting in transmittance of 70%-99.9% at a wavelength of 550 nm at a neutral state of the electrochromic layer.

Abstract: An electrochromic polymer includes a formula of MCL represents a meta-conjugated linker, and Ac represents an aromatic moiety. The disclosed electrochromic polymer has an absorption onset equal to or smaller than 420 nm in a neutral state and has absorption in visible and/or near-infrared wavelengths in an oxidized state, thus the disclosed electrochromic polymer shows a high transparency and a high optical contrast when used in electrochromic devices.

Abstract: An electrochromic device includes: a first insulating substrate; a first conducting layer disposed over the first insulating substrate; an electrochromic layer disposed over the first conducting layer, wherein the electrochromic layer comprises an electrochromic polymer having a polymer backbone comprising one or more meta-conjugated linkers (MCLs) and one or more aromatic moieties (Ars), wherein each of the one or more MCLs is partially conjugated with one of the one or more Ars at a meta position of the one or more MCLs; an electrolyte layer disposed over the electrochromic layer; a second conducting layer disposed over the electrolyte layer; and a second insulating substrate disposed over the second conducting layer. A thickness of the electrochromic layer is from 10 nm to 1500 nm resulting in transmittance of 85%-99.9% at a wavelength of 550 nm at a neutral state of the electrochromic layer.

Abstract: This disclosure relates generally to electrochromic polymers that include a plurality of ?-conjugated chromophores in spaced relation with one another, and a plurality of conjugation-break spacers (CBSs), where at least one CBS separates adjacent chromophores. The chromophores may be colored in the neutral state, and multicolored to transmissive in different oxidization states.

Abstract: An all-donor black color electrochromic polymer is disclosed as well as a method for preparing the all-donor black color electrochromic polymer. The electrochromic polymer comprises conjugated polymers, and the conjugated polymers are chemically linked, or physically blended, or both.

Abstract: An electrochromic polymer with polar side chains is disclosed. The viscosity of the electrochromic polymer is controllable by adjusting a ratio between polar side chains and alkyl side chains for forming the electrochromic polymer. The disclosed electrochromic polymer with polar side chains can be also made into a film with a controllable thickness by coating.

Abstract: This disclosure presents electrochromic devices that incorporate an n-doped organic conductive polymer, which can function as a transparent conductor, and/or ion storage material, and/or an electrochromic material in the electrochromic devices.

Abstract: A circularly polarized electrochromic device is disclosed. The disclosed circularly polarized electrochromic device includes a first substrate and a cell disposed on the first substrate. The cell includes a first electrode, an electrolyte layer, an ion storage layer, a second electrode and a chiral electrochromic layer that presents differential color changes and at least one of differential transmittance and differential absorbance depending upon different handedness of circularly polarized light under an applied voltage. A circularly polarized patterned electrochromic device and the corresponding preparation methods are also disclosed.

Abstract: A transistor device that includes a substrate comprising metallic gate contacts, a dielectric layer on the substrate comprising a polyimide or derivative thereof, a semiconductor layer on the dielectric layer comprising a semiconducting polymer confined in a host matrix material comprising a polyimide or derivative thereof, and source and drain contacts on the semiconductor layer.

Abstract: A transparent conductor (TC) is disclosed. The TC includes an n-doped conducting polymer on a transparent substrate. Thickness of the n-doped polymerized agent is between about 10 to about 200 nm.

Abstract: This disclosure presents electrochromic devices that incorporate an n-doped organic conductive polymer, which can function as a transparent conductor, and/or ion storage material, and/or an electrochromic material in the electrochromic devices.

Abstract: A method for forming an electrochromic device includes: forming a first conducting layer on a first substrate; forming a first electrolyte layer on the first conducting layer; forming a second conducting layer on a second substrate; forming an electrochromic layer on the second conducting layer; forming a second electrolyte layer on the electrochromic layer; and laminating the first substrate and the second substrate such that the first electrolyte layer is in contact with the second electrolyte layer.

Abstract: This disclosure presents electrochromic devices that incorporate an n-doped organic conductive polymer, which can function as a transparent conductor, and/or ion storage material, and/or an electrochromic material in the electrochromic devices.

Abstract: An electrochromic device includes: a first insulating substrate; a first conducting layer disposed over the first insulating substrate; an electrochromic layer disposed over the first conducting layer, wherein the electrochromic layer comprises an electrochromic polymer having a polymer backbone comprising one or more meta-conjugated linkers (MCLs) and one or more aromatic moieties (Ars), wherein each of the one or more MCLs is partially conjugated with one of the one or more Ars at a meta position of the one or more MCLs; an electrolyte layer disposed over the electrochromic layer; a second conducting layer disposed over the electrolyte layer; and a second insulating substrate disposed over the second conducting layer. A thickness of the electrochromic layer is from 10 nm to 1500 nm resulting in transmittance of 85%-99.9% at a wavelength of 550 nm at a neutral state of the electrochromic layer.

Abstract: An electrochromic device has a plurality of electrochromic layers stacked sequentially with underlying electrochromic layers crosslinked. The crosslinked electrochromic layers are solution-processable without compromising their optical and electrochromic performances. The disclosed electrochromic device can produce a full-color palette with a minimized intermediate color and show a multicolor capability. Multilayer electrochromic polymer patterns with surface texture information are made. The method for controlling electrochromism or multicolor electrochromism is discussed.

Abstract: An electrochromic device incorporating a high-energy absorbing polymer is presented to have an improved cycling stability. Various types of stable electrochromic devices are presented, including a highly stable yellow electrochromic device. Methods to improve the device cycling stability are also presented.

Abstract: An electrochromic device includes a charge balancing thin film comprised of a new vanadium oxide with a formula of VOx, which provides a high charge density, low coloration efficiency, an electroactive voltage in close proximity to those of some electrochromic materials, and high chemical and electrochromic stability. Vanadium oxide can be without doping or doped with others. The VOx charge balancing thin film has a porous nanostructure and is amorphous or a combination of amorphous and polycrystalline, and can work with electrochromic conjugated polymer in the device in a minimally color changing mode. A method to design a material for a charge balancing thin film to pair with a working electrode and obtain a low device voltage in an electrochromic device is disclosed. Methods to prepare related charge balancing thin films are also disclosed.

Abstract: An electrochromic polymer is comprised of a repeat unit comprising one or more meta-conjugated linkers (MCLs) and one or more aromatic moieties (Ars). Each of the one or more MCLs is partially conjugated with the one or more Ars at meta positions of the MCLs to form a polymer backbone of the electrochromic polymer. The electrochromic polymer undergoes an optical switching and a color change in an electrochromic device, which shows a high transparency and a high optical contrast.

Abstract: An electrochromic polymer is comprised of a repeat unit comprising one or more meta-conjugated linkers (MCLs) and one or more aromatic moieties (Ars). Each of the one or more MCLs is partially conjugated with the one or more Ars at meta positions of the MCLs to form a polymer backbone of the electrochromic polymer. The electrochromic polymer undergoes an optical switching and a color change in an electrochromic device, which shows a high transparency and a high optical contrast.

Abstract: A light-emitting electrochromic device with both electrochromic properties and light-emitting properties is disclosed. The light-emitting electrochromic device also shows multiple color-switching properties.