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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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Journal ArticleDOI
TL;DR: The effect of annealing on the structural, microstructural, electrical and optical properties were studied by X-ray diffraction (XRD), atomic force microscope (AFM), four-probe resistivity measurement and UV-vis spectrophotometer as mentioned in this paper.
Abstract: Nickel oxide (NiO) thin films were deposited onto glass substrates by the DC reactive magnetron sputtering technique. The as-deposited films were post-annealed in air at 450–500 °C for 5 h. The effect of annealing on the structural, microstructural, electrical and optical properties were studied by X-ray diffraction (XRD), atomic force microscope (AFM), four-probe resistivity measurement and UV-vis spectrophotometer. XRD studies indicated cubic structure with a lattice parameter of 0.4193 nm. The band gap of the films was found to be 3.58 eV. Fourier transform infrared (FTIR) studies indicated a broad spectrum centered at 451.6 cm −1 . Photoluminescence studies exhibited room temperature emission at 440 nm. Cyclic voltammetry studies in 1 M KOH solution revealed the electrochromic nature of the NiO films prepared in the present study.

107 citations

Journal ArticleDOI
TL;DR: In this article, NiO films were deposited by reactive RF magnetron sputtering and X-ray diffraction and infrared absorption measurements indicate that the films are polycrystalline NiO and that the bulk crystal structure does not change upon oxidation and reduction.
Abstract: Nickel oxide films were deposited by reactive RF magnetron sputtering. Optical and electrochemical characterization showed strong electrochromic activity under certain deposition conditions. X-ray diffraction and infrared absorption measurements indicate that the films are polycrystalline NiO and that the bulk crystal structure does not change upon oxidation and reduction. Electronic conduction in the films and charge storage at the NiO/electrolyte interface were studied by dc resistance and ac impedance measurements. The infrared measurements and x-ray photoelectron spectroscopy were used to characterize changes in surface composition

107 citations

Journal ArticleDOI
TL;DR: In this paper, a low temperature method was used to obtain anatase-like thin films with varying degree of porosity using a polyethylene glycol (PEG) modified sol-gel method.
Abstract: TiO2 nanocrystalline thin films with varying degree of porosity have been prepared using a low temperature method. TiO2 films of the anatase form have been obtained by using a polyethylene glycol (PEG) modified sol-gel method. Densification and crystallization of the films was found to result from the thermal treatment of the dip coated films in boiling water. The films have been characterized by Raman, XRD, FTIR, AFM and optical methods. Highly transparent films with transmission in excess of 85% and porosity as high as 58% are formed predominantly of anatase crystallites of dimensions of the order of 5 nm. Initial results on lithium intercalation into these films resulting in an efficient optical modulation in the visible and near infrared regions demonstrate a good potential of these films for electrochromic applications.

107 citations

Journal ArticleDOI
TL;DR: A strong electrostatic MV(2+) -GQD nanocomposite provides an electrolyte-free flexible electrochromic device wih high durability and exhibits stable performance under mechanical and thermal stresses.
Abstract: A strong electrostatic MV(2+) -GQD nanocomposite provides an electrolyte-free flexible electrochromic device wih high durability. The positively charged MV(2+) and negatively charged GQD are strongly stabilized by non-covalent intermolecular forces (e.g., electrostatic interactions, π-π stacking interactions, and cation-π electron interactions), eliminating the need for an electrolyte. An electrolyte-free flexible electrochromic device fabricated from the GQD-supported MV(2+) exhibits stable performance under mechanical and thermal stresses.

107 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
2023458
2022833
2021538
2020712
2019744
2018770