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: The band gap and optical properties of polythiophene can be turned for use in electrochromic applications by attaching substituents to the monomers before polymerization as discussed by the authors, while steric interaction of side groups on adjacent thiophene rings forces the conjugated backbone to twist and increases the band gap.
80 citations
TL;DR: The influence of substrate temperature on the structural, surface morphological and optical properties of the films has been studied in this paper, where the films were deposited on glass and fluorine doped tin oxide (SnO 2 :F or FTO) coated glass substrates at different substrate temperatures like room temperature (RT, 30°C), 100°C and 200°C).
80 citations
Patent•
21 Dec 1970TL;DR: In this article, an electrochromic device consisting of a transparent electrode, a reflecting layer electrode, and a transition metal compound and a solid insulating film disposed between the electrodes is presented.
Abstract: Electro-optical device particularly useful in the modulation of reflected light typically comprising an electrochromic device containing a reflecting layer electrode in sandwiched arrangement, said electrochromic device being a sandwich arrangement of a transparent electrode, a reflecting layer electrode, a film of a transition metal compound and a solid insulating film disposed between the electrodes. The electrochromic device exhibits coloration and bleaching thereof at ambient temperature by control of the polarity of an applied electric field, whereby light reaching the reflecting solid layer electrode is modulated in intensity, thus modulating, in turn, the reflected light.
80 citations
TL;DR: In this paper, the feasibility of using plasma enhanced chemical vapor deposition (PE-CVD) to prepare electrochromic thin films of tungsten oxide and molybdenum oxide by plasma reaction of WF6, W(CO)6, and Mo( CO)6 with oxygen was investigated.
Abstract: Preliminary experiments have been performed to probe the feasibility of using plasma enhanced chemical vapor deposition (PE–CVD) to prepare electrochromic thin films of tungsten oxide and molybdenum oxide by plasma reaction of WF6, W(CO)6, and Mo(CO)6 with oxygen. Thin films produced in a 300 W, electrodeless, radio‐frequency (rf), capacitive discharge were found to be electrochromic when tested with either liquid or solid electrolytes. Optical spectroscopy was performed on two electrochromic coatings after Li+ ion insertion from a propylene carbonate liquid electrolyte. Broad absorption peaks at ∼900 nm for WO3 and 600 nm for MoO3 were observed. Optical results for PE–CVD MoO3 films differ from those reported for evaporated MoO3 films which have an absorption peak at ∼800 nm. The shorter wavelength absorption in the PE–CVD MoO3 films offers the potential for fabricating electrochromic devices with higher contrast ratios and less color change. Optical emission spectroscopy, Auger, and x‐ray diffraction an...
79 citations
TL;DR: In this paper, the electrochemical properties of the intercalation process of lithium ions in the nickel oxide host structure are examined. But the exact nature of the electrochromic process in these electrodes is not yet fully clear.
79 citations