High-performance complementary electrochromic device based on surface-confined tungsten oxide and solution-phase N-methyl-phenothiazine with full spectrum absorption

Weng, Duo; Li, Mei; Zheng, Jianming; Xu, Chunye

doi:10.1007/s10853-016-0297-6

Cited by 23 publications

(7 citation statements)

References 37 publications

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“…This indicates that the films in the wavelength of 660 nm possess the fastest self-coloration speed and the highest optical modulation of 49.1% (vs 45.7% and 41% at 520 and 435 nm, respectively). The reason for this phenomenon is that both tungsten oxide and molybdenum oxide electrochromic materials are near-infrared active in optical properties, , where the transmittance modulation is larger and the electrochromic reaction rate is faster when the wavelength is closer to the near-infrared band in the MoO 3– y /WO 3– x film. All the three lines showing a gradually decreasing coloration rate also accord with the chronoamperometry curve values.…”

Section: Results and Discussionmentioning

confidence: 99%

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: 99%

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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“…While NMP delivered an optical contrast of 90% at 535 nm in the potential range of 0 to 0.9 V. The complementary EC properties and compatibility of the two components are responsible for the excellent EC performance of the hybrid composite device. [126] More recently, Manca et al presented an organicinorganic composite dual-band EC device to achieve four-state modulation by combining the broad NIR response of ITO NCs and high VIS contrast of PANI. Figure 17e,f shows the transmission spectra of ITO NCs and PANI electrodeposited on ITO NCs (ITO/PANI).…”

Section: Hybrid Composite Ec Materialsmentioning

confidence: 99%

Recent Advances on Dual‐Band Electrochromic Materials and Devices

Zhai

Shen

et al. 2022

Adv Funct Materials

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Dual-band electrochromism is a phenomenon where materials can independently regulate the transmittance of visible (VIS) and near-infrared (NIR) light. Owing to their bistability, low energy consumption, and independent control over VIS and NIR regions, dual-band electrochromic (EC) devices have been of great significance to fully harnessing VIS and NIR light and building an energy-saving society. The past several years have witnessed the efforts put in developing novel EC materials to improve their dual-band optical performance through altering their composition, structural, and physicochemical features, which determine the optical behavior of dual-band EC devices. In this review, the concept, significance, working principle, and key influence factors of dual-band electrochromism are briefly introduced. Next, the up-to-date progress of dual-band EC materials including inorganic, organic, and composites materials are summarized, with a focus on material design, device fabrication, and performance optimization. Finally, the challenges and perspectives of dual-band EC materials and devices are also presented.

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“…[1] Meanwhile, ≈41% of the global energy consumption is used to maintain indoor light electrochromic performance in terms of large optical modulation but less satisfactory in the switching speed and coloration efficiency, which organic electrochromic materials have advantages in. Utilizing composites of the organic materials and the LSPR inorganic materials seems to be an efficient solution; [23] however, finding suitable organic materials and ions for doping is cumbersome. In addition, the above-mentioned materials can only enhance the NIR-modulation due to the exclusive LSPR absorption in this spectral range and always suffer severe degradation upon long-term cycling, which are not satis factory in terms of dual-band durability.…”

Section: Introductionmentioning

confidence: 99%

Visible and Near‐Infrared Dynamic Electrochromic Modulation With the Plasmon‐Enhanced Two‐Dimensional Ordered Macroporous Au/PProDot‐Me₂ Thin Film

Wang

Yang

et al. 2023

Advanced Optical Materials

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Localized surface plasmon resonance (LSPR) is attractive to fabricate visible (VIS) and near‐infrared (NIR) dual‐band electrochromic materials. However, the introduction of the LSPR effect in the available dual‐band electrochromic materials can only be manifested to the spectral enhancement in the NIR region, and difficult issues of electrochromic materials such as low coloration efficiency and unsatisfactory long‐term cycling durability still remain. Here, a dual‐band electrochromic thin film consisting of a 2D ordered macroporous (2DOM) Au LSPR layer and a poly(3,4‐(2,2‐dimethylpropylenedioxy)thiophene) (PProDot‐Me2) electrochromic layer is presented, where LSPR and electrochromism interact in a complementary fashion. The 2DOM Au exhibits LSPR effect at wavelengths of 550 and 1700 nm, leading to a unique electrochromic performance improvement of the film in both of the VIS and NIR spectral regions. Large optical modulation, rapid switching speed, high coloration efficiency, and long‐term durability are achieved due to the collective effect of the near‐field enhancement of the 2DOM Au and the reduced bandgap of PProDot‐Me2. These advantages can be well retained in the dual‐band electrochromic device using the 2DOM Au/PProDot‐Me2 films as the electrochromic layers. This work provides new ideas for designing LSPR‐based devices, especially dual‐band electrochromic materials and devices, both experimentally and theoretically.

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High-performance complementary electrochromic device based on surface-confined tungsten oxide and solution-phase N-methyl-phenothiazine with full spectrum absorption

Cited by 23 publications

References 37 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

Recent Advances on Dual‐Band Electrochromic Materials and Devices

Visible and Near‐Infrared Dynamic Electrochromic Modulation With the Plasmon‐Enhanced Two‐Dimensional Ordered Macroporous Au/PProDot‐Me₂ Thin Film

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High-performance complementary electrochromic device based on surface-confined tungsten oxide and solution-phase N-methyl-phenothiazine with full spectrum absorption

Cited by 23 publications

References 37 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

Recent Advances on Dual‐Band Electrochromic Materials and Devices

Visible and Near‐Infrared Dynamic Electrochromic Modulation With the Plasmon‐Enhanced Two‐Dimensional Ordered Macroporous Au/PProDot‐Me2 Thin Film

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

Visible and Near‐Infrared Dynamic Electrochromic Modulation With the Plasmon‐Enhanced Two‐Dimensional Ordered Macroporous Au/PProDot‐Me₂ Thin Film