Topic
Electrochromism
About: Electrochromism is a research topic. Over the lifetime, 13097 publications have been published within this topic receiving 294637 citations.
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TL;DR: In this paper, the first electrochromic switching of molecular nonlinear absorption was demonstrated using an optically transparent thin-layer electrochemical cell, a procedure which has applicability to evaluating the switching capability of a range of materials.
Abstract: The molecular inorganic compounds 1,3,5-{trans-[RuCl(dppe)2]C⋮C-4-C6H4C⋮C}3C6H3 (1), trans-[Ru(C⋮C-4-C6H4C⋮CPh)Cl(dppe)2] (2), and trans-[Ru(C⋮CPh)Cl(dppm)2] (3) exhibit reversible oxidation in solution, assigned to the metal-centered RuII/III processes. Complexes 1−3 are essentially transparent at frequencies below 20 × 103 cm-1, whereas the green complexes 1+−3+ have a strong absorption band centered near 11−12 × 103 cm-1. These absorption bands have been utilized to demonstrate facile NLO switching utilizing an optically transparent thin-layer electrochemical cell, a procedure which has applicability to evaluating the switching capability of a range of materials. This procedure has been applied to switch cubic nonlinearities, the first electrochromic switching of molecular nonlinear absorption. Oxidation of the molecules results in changes, including changes of sign, of both the imaginary (absorptive) part of the third-order nonlinearity and the real (refractive) part. Cycling between the two forms of ...
113 citations
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TL;DR: In this article, the synthesis of nanostructured tungsten trioxide (WO3) films and their electrochromic characteristics were reported, and the growth mechanism of the film was investigated.
Abstract: We report the synthesis of nanostructured tungsten trioxide (WO3) films and their electrochromic characteristics. Plate-like monoclinic WO3 nanostructures were grown directly on fluorine-doped tin oxide glass substrates by a simple and low-cost crystal-seed-assisted hydrothermal method. The growth mechanism of the film is investigated. HRTEM analysis reveals the single crystalline quality of the WO3 nanostructure. The film exhibits tunable transmittance modulation under different voltages and repetitive cycling between the clear and blue states has no deleterious effect on its electrochromic performance after 3000 cycles. The electrochromic device composed of the WO3 film has high electrochromic stability, colour contrast and reasonable switching response with a colouration efficiency of 38.2 cm2 C−1 at 632.8 nm.
113 citations
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TL;DR: The resultant patterned nanostructured electrochromic films maintained their coloring and bleaching performance after bending of the flexible films, and were used for electrochrome applications for the first time.
Abstract: Printed electrochromic flexible films were obtained by combining transparent silver grid electrodes formed by self-assembly and inkjet printed WO3 nanoparticles. Concentrated dispersions of WO3 nanoparticles were inkjet printed on transparent plastic silver grid electrodes with a high transparency of 83% in the spectral range of 400–800 nm, and a low sheet resistance in the range of 1–5 Ω sq−1. These electrodes were used for electrochromic applications for the first time. The resultant patterned nanostructured electrochromic films maintained their coloring and bleaching performance after bending of the flexible films.
113 citations
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TL;DR: In this article, the effects of electrochromic coloration on the Raman spectra of sputtered a-MoO3 films were investigated and two strong peaks at 828 and 951 cm−1 were observed.
113 citations