Electrochromic properties of MoO3-WO3 thin films prepared by a sol-gel method, in the presence of a triblock copolymer template

Jittiarporn, Phuriwat; Sikong, Lek; Kooptarnond, Kalayanee; Taweepreda, Wirach; Stoenescu, Stefan; Bădilescu, Simona; Truong, Vo‐Van

doi:10.1016/j.surfcoat.2017.08.012

Cited by 38 publications

(14 citation statements)

References 36 publications

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“…The peaks in the range of 120–400 cm –1 are assigned to various bending modes of α-MoO 3– y crystal, such as the deformation modes at 190 cm –1 . The Raman peaks in the high wavenumber region (600–1000 cm –1 ) located at 647 and 677 cm –1 are attributed to the stretching mode of O–Mo–O bonds, whereas the bands at 958 and 990 cm –1 are assigned to the stretching vibrations of the terminal MoO bands. ,, Therefore, the Raman data confirm the presence of crystalline α-MoO 3– y in the amorphous WO 3– x film. The surface and cross-sectional morphologies of MoO 3– y /WO 3– x film were further examined by scanning electron microscopy (SEM).…”

Section: Results and Discussionmentioning

confidence: 55%

Self-Powered Rewritable Electrochromic Display based on WO_3-x Film with Mechanochemically Synthesized MoO_3–y Nanosheets

Fang

et al. 2021

ACS Appl. Mater. Interfaces

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Electrochromic displays with bistable color states provide a promising means toward transparent human−machine interfaces. However, the need for external power and the weak optical modulation in the visible light region of most electrochromic devices hinder their practical applications in displays. Here we prepare the MoO 3−y /WO 3−x films based on MoO 3−y nanosheets, which show a dark blue color that matches the response of the eye and meets visual comfort standards compared to pure WO 3−x film. By introducing the highly transparent Al 3+ ion hydrogel layer, a convenient electrochromic device driven by the internal chemical potential has been designed. The device based on the MoO 3−y /WO 3−x film exhibits a high optical modulation in the whole visible light range and can operate at self-powered mode with fast response speed and excellent cycle stability. Moreover, we develop an ionic writing board based on the MoO 3−y /WO 3−x film to surmount the fixed display information issue in conventional electrochromic displays. The ionic writing board exhibits excellent visual display quality and realizes arbitrary writing with a self-powered characteristic. This work provides a simple mechanochemical synthesis procedure of MoO 3−y nanosheets and an ingenious design of self-powered electrochromic devices, which will enable the development of next-generation high-performance electrochromic displays.

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Section: Results and Discussionmentioning

confidence: 55%

Self-Powered Rewritable Electrochromic Display based on WO_3-x Film with Mechanochemically Synthesized MoO_3–y Nanosheets

Fang

et al. 2021

ACS Appl. Mater. Interfaces

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“…The EC device configured with ITO/GLi 30 W 10 /NiO/ITO achieves a coloration efficiency of 51.54 cm 2 /C and fast color-bleach response times (2 s/1 s). Jittiarporn et al243 prepared hybrid MoO 3 -WO 3 thin films on ITO glass by a sol-gel dip-coating process The formation of the film can be influenced by the calcination temperature, the concentration of MoO 3 (0-10%), and the copolymer template as Pluronic P-123 triblock (0-20% w/v). The least amount of 5% MoO 3 -95% WO 3 films without the use of the template and 200-300 °C annealing exhibited the high CE, excellent cycling stability, and low response time.…”

mentioning

confidence: 99%

Advanced developments in nonstoichiometric tungsten oxides for electrochromic applications

et al. 2021

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“…The overall morphologies of MoO 3 nanobelt and GO nanosheet for the f ‐MoO 3 ‐GO nanocomposites were further revealed by TEM images. As shown in Figure d,e, the co‐existing MoO 3 nanobelts and GO nanosheets are observed, the MoO 3 nanobelts with the diameter in the range of 100–200 nm are wrapped around by GO nanosheet . From Figure f, it can be found that the d ‐space of MoO 3 nanobelt is 0.277 nm.…”

Section: Resultsmentioning

confidence: 69%

Friction and Wear of MoO₃/Graphene Oxide Modified Glass Fiber Reinforced Epoxy Nanocomposites

Chen

Liu

et al. 2019

Macro Materials & Eng

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materials and epoxy (EP) as matrix through mold pressing, vacuum resin transfer mold (VARTM), and prepreg. GF/EP composites have been widely used in the field of anti-wear composite engineering [4] due to their flexibility, good processability, high specific strength and modulus, low cost, and easy large-scale production, compared to metal and ceramic based ones. [5,6] The friction and wear performance of the material can be further enhanced by incorporating nanoparticles. [7][8][9][10][11] In the organic [12] and inorganic [13] filler systems, carbon-based fillers and metallic oxides, such as graphene oxide (GO) and molybdenum trioxide (MoO 3 ), are often adopted to modify the anti-friction and anti-wear performance of the resin matrix.Due to its superior electrical and mechanical properties, [14,15] GO or reduced GO (rGO) can be used as the additive in the flexible conductive composites [16,17] or lubricating liquids [18] and in the coating film for various composites (such as polyacrylonitrile (PAN), polyethylenimine (PEI), polyphenylene sulfide (PPS), etc.). [19] GO can be used in the field of anti-wear. Similar to other carbon materials, such as carbon black, carbon nanotubes, Antifriction Materials In order to further improve the tribological performance of glass fiber reinforced epoxy (GF/EP) composites, highly flexible, binder-free, molybdenum trioxide MoO 3 nanobelt/graphene oxide (GO) film (f-MoO 3 -GO) is prepared by a hydrothermal method. Herein, f-MoO 3 -GO is adopted to modify GF/EP composites prepared through the vacuum-assisted resin transfer molding method. The neat GF/EP and MoO 3 -GO modified GF/EP composites are also fabricated for comparison. The tribological performance is performed using a ball-on-disc ("steel-on-polymer") configuration under a dry sliding condition. The coefficient of friction is reduced from 0.61 for neat GF/EP composites down to 0.23 for f-MoO 3 -GO modified GF/EP (f-MoO 3 -GO/GF/EP) composites and the anti-wear performance is improved by more than four times. The worn surface morphological observation for the composite samples is used to explain the possible wear micro-mechanisms. The wear reducing effect of the f-MoO 3 -GO/GF/EP composites can be assigned to the increased selflubricating effect of f-MoO 3 -GO. With the combined advantageous properties of the used individual components, these unique composites can be used for many other applications.The ORCID identification number(s) for the author(s) of this article can be found under https://doi.

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Electrochromic properties of MoO3-WO3 thin films prepared by a sol-gel method, in the presence of a triblock copolymer template

Cited by 38 publications

References 36 publications

Self-Powered Rewritable Electrochromic Display based on WO_3-x Film with Mechanochemically Synthesized MoO_3–y Nanosheets

Self-Powered Rewritable Electrochromic Display based on WO_3-x Film with Mechanochemically Synthesized MoO_3–y Nanosheets

Advanced developments in nonstoichiometric tungsten oxides for electrochromic applications

Friction and Wear of MoO₃/Graphene Oxide Modified Glass Fiber Reinforced Epoxy Nanocomposites

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Electrochromic properties of MoO3-WO3 thin films prepared by a sol-gel method, in the presence of a triblock copolymer template

Cited by 38 publications

References 36 publications

Self-Powered Rewritable Electrochromic Display based on WO3-x Film with Mechanochemically Synthesized MoO3–y Nanosheets

Self-Powered Rewritable Electrochromic Display based on WO3-x Film with Mechanochemically Synthesized MoO3–y Nanosheets

Advanced developments in nonstoichiometric tungsten oxides for electrochromic applications

Friction and Wear of MoO3/Graphene Oxide Modified Glass Fiber Reinforced Epoxy Nanocomposites

Contact Info

Product

Resources

About

Self-Powered Rewritable Electrochromic Display based on WO_3-x Film with Mechanochemically Synthesized MoO_3–y Nanosheets

Self-Powered Rewritable Electrochromic Display based on WO_3-x Film with Mechanochemically Synthesized MoO_3–y Nanosheets

Friction and Wear of MoO₃/Graphene Oxide Modified Glass Fiber Reinforced Epoxy Nanocomposites