Electrochromic mirror using viologen-anchored nanoparticles

Kim, Han Na; Cho, Seong M.; Ah, Chil Seong; Song, Juhee; Ryu, Hojun; Kim, Yong Hae; Kim, Tae-Youb

doi:10.1016/j.materresbull.2016.03.010

Cited by 32 publications

(8 citation statements)

References 21 publications

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“…The device also showed a fast switching time (0.5 s) and high CE (440 cm 2 C –1 ). In addition, related results successfully confirmed the capability of improving EC performance by immobilizing EC molecules on the sintered nanoparticle layer electrode, which has been reported continually in other studies. − …”

Section: Electrochromic Materials and Devicesmentioning

confidence: 99%

Emerging Electrochromic Materials and Devices for Future Displays

et al. 2022

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With the rapid development of optoelectronic fields, electrochromic (EC) materials and devices have received remarkable attention and have shown attractive potential for use in emerging wearable and portable electronics, electronic papers/billboards, see-through displays, and other new-generation displays, due to the advantages of low power consumption, easy viewing, flexibility, stretchability, etc. Despite continuous progress in related fields, determining how to make electrochromics truly meet the requirements of mature displays (e.g., ideal overall performance) has been a long-term problem. Therefore, the commercialization of relevant high-quality products is still in its infancy. In this review, we will focus on the progress in emerging EC materials and devices for potential displays, including two mainstream EC display prototypes (segmented displays and pixel displays) and their commercial applications. Among these topics, the related materials/devices, EC performance, construction approaches, and processing techniques are comprehensively disscussed and reviewed. We also outline the current barriers with possible solutions and discuss the future of this field.

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Section: Electrochromic Materials and Devicesmentioning

confidence: 99%

Emerging Electrochromic Materials and Devices for Future Displays

et al. 2022

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“…In spite of their low cost and good processability, viologen-based materials are still lack of good electrical conductivity, cyclic stability and fast response times for practical applications. To further enhance their EC performance, hybrid organic-inorganic EC systems have been developed through chemical anchoring or adsorption of viologen moleculars onto various nanostructued semiconductors (such as TiO 2 , ZnO, ITO, SnO 2 etc) with a high specific surface area and good crystallinity [85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,101,102,103]. The improved switching speed, cyclic stability and contrast ratio of such a hybrid system is ascribed to the fast interfacial electron and ion transfer between the nanocrystalline electrode and the anchored chromophore together with sufficient coloration resulted from the high volume density of the tethered viologens [88].…”

Section: Viologen-based Electrochromesmentioning

confidence: 99%

“…In particular, nanocrystalline TiO 2 films (Figure 12a,b) are the most widely used semiconductor substrates for adsorption of viologens owing to their easy preparation, large surface area, good electrical conductivity, and good transparency to visible light and high surface affinity towards certain ligands [85,86,87,88,89,90,91,92,93,94,95,96,97]. For chemical attachment onto the TiO 2 surface which bears OH groups, the employed viologen molecules are usually functionalized with at least one phosphonic acid group (-P(=O)(OH) 2 ) linked to the viologen core atoms via a flexible alkyl chain ((CH 2 ) n ) (Figure 12c) [96].…”

Section: Viologen-based Electrochromesmentioning

confidence: 99%

Viologen-Based Electrochromic Materials: From Small Molecules, Polymers and Composites to Their Applications

et al. 2019

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Organic materials have gained considerable attention for electrochromic (EC) applications owing to improved EC performance and good processability. As a class of well-recognized organic EC materials, viologens have received persistent attention due to the structural versatility and property tunability, and are major active EC components for most of the marketed EC devices. Over the past two decades, extensive efforts have been made to design and synthesize different types of viologen-based materials with enhanced EC properties. This review summarizes chemical structures, preparation and EC properties of various latest viologen-based electrochromes, including small viologen derivatives, main-chain viologen-based polymers, conjugated polymers with viologen side-chains and viologen-based organic/inorganic composites. The performance enhancement mechanisms are concisely discussed. The current marketed viologens-based electrochromic devices (ECDs) are briefly introduced and an outlook on the challenges and future exploration directions for viologen-based materials and their ECDs are also proposed.

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“…In the case of mirrors, the light path must be thought out because a clear image needs to be seen in the bleaching state and coloration state without overlaid images; [33] furthermore, access high reflectance, high contrast ratio, and a clear image are necessary. [30,33] There have been many reports of ECDs being used as a biosensor, such as the detection of hydrogen peroxide [34] and ochratoxin A [35] using modified Prussian Blue (PB) electrodes and the glucose analysis using conjugated polymers, [36] applicable in medical products.…”

Section: Introductionmentioning

confidence: 99%

Fundamentals and Advances of Electrochromic Systems: A Review

Isfahani

Silva

2021

Adv Eng Mater

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Electrochromic (EC) materials as one of the known types of smart materials have found many applications and therefore have recently been considered by many researchers and industries. Herein, after classifying these materials based on various properties such as chemical structure, optical properties, color, and applications explains how the EC-based systems work. Also, by introducing the widely used analyses in this field along with the different parameters and properties derived from them, using different examples from previous research, discusses the principles and advances of EC. Guidelines for further investigations are outlined.

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Electrochromic mirror using viologen-anchored nanoparticles

Cited by 32 publications

References 21 publications

Emerging Electrochromic Materials and Devices for Future Displays

Emerging Electrochromic Materials and Devices for Future Displays

Viologen-Based Electrochromic Materials: From Small Molecules, Polymers and Composites to Their Applications

Fundamentals and Advances of Electrochromic Systems: A Review

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