Spectrelectrochemical studies of some viologens used in electrochromic display applications

Goddard, N J; Jackson, Angela; Thomas, Malkow

doi:10.1016/s0022-0728(83)80631-7

Cited by 16 publications

(12 citation statements)

References 7 publications

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“…It was found that the broad absorption band ranging from 450 to 650 nm was mainly consisted of the absorption bands C and D, and the relative intensity of the absorption band E became negligibly small soon after the electrode potential was stepped. Especially, the absorption band D was observed in the thin deposition layer, although that absorption band has been reported in thicker deposition layer [38]. The absorption band C was dominant from initial to 10 s and the absorption bands C and D composed the broad absorption band ranging from 450 to 650 nm from 10 to 60 s.…”

Section: Sowg Spectroscopic Observation Of the Following Adsorption Pmentioning

confidence: 86%

Identification of adsorption states of heptyl viologen cation radicals in a thin deposition layer by slab optical waveguide spectroscopy utilizing indium-tin-oxide electrodes

Ayato¹,

Takatsu

Kato

et al. 2006

Journal of Electroanalytical Chemistry

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Section: Sowg Spectroscopic Observation Of the Following Adsorption Pmentioning

confidence: 86%

Identification of adsorption states of heptyl viologen cation radicals in a thin deposition layer by slab optical waveguide spectroscopy utilizing indium-tin-oxide electrodes

Ayato¹,

Takatsu

Kato

et al. 2006

Journal of Electroanalytical Chemistry

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“…In other words, the crystallization damages the ECDs from the viewpoint of long-term stability. 42,43 Therefore, operating within the first redox couple (eqn (1)) can alleviate the aging process.…”

Section: +mentioning

confidence: 99%

“…Another aging process in this system is the aggregation of PV + . The PV + generated upon reduction tends to aggregate on the ITO electrode due to its lack of solubility (such a phenomenon can be observed both in aqueous 33,43 and non-aqueous solutions 42 ). The agglomerate hinders the recombination during the bleaching stage.…”

Section: +mentioning

confidence: 99%

Achieving a large contrast, low driving voltage, and high stability electrochromic device with a viologen chromophore

et al. 2015

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“…Bipyridinium salts (viologens), a type of organic EC material, display different colors corresponding to their oxidation state and the nature of nitrogen's chemical bond's upon EC transition [8]. Figure 1 illustrates two viologen redox states.…”

Section: Introductionmentioning

confidence: 99%

Lifetime of electrochromic optical transition cycling of ethyl viologen diperchlorate-based electrochromic devices

2021

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Electrochromic materials and devices are enabling a variety of advanced technologies. Gel-based organic electrochromic molecules such as ethyl viologen diperchlorate are attractive options due to their simple device design and low cost processing options relative to the more expensive and complex transition metal oxide films. However, electrochromic devices are subject to extensive cycling in which failure and fatigue can eventually occur. This work presents the lifetime cycling performance of ethyl viologen diperchlorate-based electrochromic devices using two different anodic compounds, hydroquinone and ferrocene, which are cycled at different voltages, 3 V and 1.2 V, respectively. Multiple devices are cycled until failure with periodic device characterization via UV–Vis spectroscopy, electrical resistance and power measurement, and transition duration measurement. Devices with hydroquinone can transition quickly. Cycle times are $$\sim$$ ∼ 30 s in these samples, however, these samples also typically fail before 3000 cycles. On the other hand, devices using ferrocene transition more slowly (total cycle time $$\sim$$ ∼ 2 min), but have superior cycling performance with all samples surviving beyond 10,000 cycles while complying with ASTM E2141-14 standard.

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Spectrelectrochemical studies of some viologens used in electrochromic display applications

Cited by 16 publications

References 7 publications

Identification of adsorption states of heptyl viologen cation radicals in a thin deposition layer by slab optical waveguide spectroscopy utilizing indium-tin-oxide electrodes

Identification of adsorption states of heptyl viologen cation radicals in a thin deposition layer by slab optical waveguide spectroscopy utilizing indium-tin-oxide electrodes

Achieving a large contrast, low driving voltage, and high stability electrochromic device with a viologen chromophore

Lifetime of electrochromic optical transition cycling of ethyl viologen diperchlorate-based electrochromic devices

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