Electrochromic properties

This short review revisits the progress achieved in the last 10e15 years in the field of hybrid electrochromic materials, synthesized through solegel methods. New research directions in the field of electrochromism (EC), together with novel applications of many electrochromic hybrid oxides are discussed here.

15p viberbers 09-08-2023 7 3   Download

The NiO thin films were prepared by the electron beam evaporation method using synthesized sintered targets. As-prepared films were characterized using X-ray diffraction, scanning electron microscopy, UVeVIS spectroscopy and cyclic voltammetry. The thicker films were found to exhibit a well-defined structure and a well-developed crystallite size with greater transmittance modulation and durability.

8p viberbers 09-08-2023 5 3   Download

The focus of this study is to investigate its optical and conductive properties under different conditions of doping environments, temperature and polymerization conditions. Optical characterization technique such as UV-Visible spectroscopy is developed to carry out the investigation. The developed nanofibers have been demonstrated to possess optical and conductive properties to be dependent on doping variables. Study of these optical properties could prove very useful in the development of electrochromic devices and gas sensors.

103p runthenight07 01-03-2023 5 2   Download

We performed the optimization of conditions in chemical bath deposition using the design of experimental methodology. Factorial design (23) was used for finding the optimal conditions of preparing vanadium(V) oxide xerogel thin films with better electrochromic properties suitable for electrochemical applications. The thin films were prepared by acidification of NH4 VO3 aqueous solution with chemical bath deposition.

11p langthannam 29-12-2021 8 0   Download

The PANI/nc-TiO2 heterojunctions were formed in the composite films due to the insertion of PANI in nano-porous TiO2 particles. PANI/ITO films exhibited a reversible electrochromic display (ECD) performance when cycled in 0.1M LiClO4 + propylene carbonate

7p meyerowitz 25-12-2021 6 0   Download

A novel alkoxy-bridged dithieno (3, 2-B:2’,3’-D) pyrrole (DTP) derivative was synthesized and its corresponding polymer poly(1,2-bis(2-(4H-dithieno[3,2-b:2’,3’-d]pyrrol-4-yl)ethoxy)ethane) (P(DTP-alkoxy-DTP)) was successfully obtained electrochemically. The effects of alkoxy bridge in the structure on the electrochemical and spectroelectrochemical properties of the polymer were also investigated in detail. The results showed that the polymer film exhibits multielectrochromic behavior and a low band gap of 1.82 eV.

10p tudichquannguyet 29-11-2021 11 1   Download

In the present study, two new donor–acceptor–donor-type molecules were synthesized and the electro-optical properties of the resulting monomers and their corresponding polymers were investigated. Thiophene was selected as the donor unit and cycloheptyl- and cyclooctyl- substituted benzimidazoles were used as the acceptor units. The synthesized monomers and their electrochemically obtained polymers were characterized using cyclic voltammetry and UV-Vis spectrometry. The optical band gap values of the polymers were 1.

11p tudichquannguyet 29-11-2021 12 1   Download

Polythiophenes with various substituted hydrazone side groups were synthesized using a chemical oxidative coupling reaction. Analyses of IR and NMR spectra confirmed the expected structure of new synthesized polymers and confirmed suitability of the suggested synthetic route. Surface properties, morphology and thermal stability of the prepared polymers were studied by SEM and TGA methods. Two derivatives were found to have a good solubility in several water-miscible solvents. They can be used as active materials in electrochromic and electronic devices.

6p lamtan3547 04-11-2018 32 1   Download

The reversible coloration and bleaching of TiO2/ITO and WO3-TiO2/ITO electrodes were demonstrated. The ECD coloration efficiency of WO3-TiO2/ITO was found to be much larger (55.1 cm2 × C −1 ) than that of TiO2/ITO (34.3 cm2×C −1 ). The resulting nanostructured composites enables the coloration efficiency of the WO3-TiO2 film to be considerably improved. The results suggest a potential application of the nanocomposites of two electrochromic oxides in large-area energy-efficiency (or smart) windows.

7p thuyliebe 09-10-2018 41 0   Download

The study of electrochromic thin films, which are transparent in the visible range, is significantly important in producing smart doors production and saving energy. This paper reports the results of preparing WO3 thin films on glass substrates and ITO substrates by thermal vacuum evaporation method.

8p cumeo3000 01-08-2018 45 1   Download