Two-dimensional spatial image control using an electrochromic graduated filter with multiple electrode configuration

Intercalation-free, fast switching of mesoporous antimony doped tin oxide with cathodically coloring electrochromic dyes

“…1 Due to this property such materials are widely investigated for displays, 2,3 smart windows 4,5 or imaging. 6,7 The variety of active materials include metal oxide lms, 8,9 polymer lms, [10][11][12][13] solubilized organic molecules [14][15][16] or hybrid systems. The latter refers to a combination of an inorganic mesoporous scaffold functionalized with organic redox-active dyes.…”

“…The counter electrode of this device also consists of a mesoporous ATO layer but with an anodically coloring organic dye. The selection of the dyes for the two electrodes is based on our preliminary work 7,18 and enables the devices to achieve high contrasts. Also in the device, the non-intercalating electrolyte is utilized.…”

Cerium‐Modified Mesoporous Antimony Doped Tin Oxide as Intercalation‐Free Charge Storage Layers for Electrochromic Devices

“…The change in the optical properties of a material caused by reversible redox reactions is known as electrochromism, and materials showing this effect are used in a wide range of optoelectronic fields. [ 1–4 ] Typical electrochromic devices comprise multiple components that have to meet several requirements to enable fast and efficient switching between the colored and decolored state. As for the materials that cause the change in optical absorption, the spectrum of suitable compounds spans a wide range of inorganic, [ 5–7 ] organic, [ 8–10 ] or hybrid materials.…”

“…The change in the optical properties of a material caused by reversible redox reactions is known as electrochromism, and materials showing this effect are used in a wide range of optoelectronic fields. [1][2][3][4] Typical electrochromic devices comprise multiple components that have to meet several requirements to enable fast and efficient switching between the colored and above-mentioned charge storage layers based on cerium oxide nanoparticle layers are not suitable since non-intercalating electrolytes only allow reactions at the outermost surface of the particles while the ions in the volume of the particles are not accessible. Thus, the thickness of the electrodes would have to be substantially increased to provide the required charge storage capacity.…”

Retarding the Shuttling Ions in the Electrochromic TiO2 with Extensive Crystallographic Imperfections

“…The advantages of electrochromic transition metal oxides (ETMOs), a common oxide but with desirable functions have been used to modulate the optical transmittance upon electrochemical polarization enabling its applications in smart windows, [1] electronic displays, [2] dynamic surfaceenhanced Raman scattering substrates, [3] flexible 2D filters [4] and so on. Most ETMOs in crystalline form are wide-band gap semiconductors and are fully transparent or slightly tinted, such as tungsten oxide, [5] titanium oxide, [6] molybdenum oxide, [7] and even doped ternary oxides, [8] etc.…”