All-plastic electrochromic devices based on PEDOT as switchable optical attenuator in the near IR

Measurement Protocols for Reporting PEDOT Thin Film Conductivity and Optical Transmission: A Critical Survey

“…When conducting polymers are used in electrochromic applications such as light attenuators [12] or displays [13] optical transmission, rather than conductivity, becomes the dominant characteristic. The transmission values (i.e., minimum, maximum and range) recorded for conducting polymers are a function of the polymer being tested as well as the measurement protocol used.…”

“…Using either of these two protocols to measure optical transmission could be justified if, for example, the intended end use was a device such as an auto-dimming car mirror or architectural glazing. [40][41][42] Alternatively, if the intended use was to control the transmission of IR radiation [12,43,44] , one could justify quoting the wavelength(s) at which the maximum and minimum response was produced in bleached and darkened states (note: maxima and minima may occur at different wavelengths). Alternatively, one could quote the wavelength at which the maximum optical transmission range, D%Tx max , is recorded.…”

“…If the polymer is not synthesized in situ, application to a donor substrate for device manufacture or further fundamental research can be as simple as using deposition techniques such as spin or spray coating. [10,11] Their conductive and optical properties have seen this class of polymer used in an assortment of different applications such as light attenuators, [12] displays, [13] chemical and biosensors, [14][15][16] and electrical ''noses''. [17,18] Huge inroads have also been made in the organic electronics field where the realization of an all-organic flexible transistor will potentially open up a vast array of new applications.…”

Modelling and electro-optical testing of suspended particle devices

“…When an AC field is applied perpendicularly to the film, its LC molecules change directions and its optical characteristics vary [4]. Electrochromism involves electroactive materials that present a reversible change in optical properties when electrochemically oxidized or reduced [5,6].…”

Highly transparent electrochromic plastic device that changes to purple and to blue by increasing the potential

“…Research in electrochromic devices has received a great deal of attention due to the importance of this phenomenon in applications such as electrochromic windows [1], displays [2], anti-glare mirrors, eye-glasses and solar-attenuated windows [3][4][5][6][7]. Materials suitable for electrochromic application can be divided into two groups: inorganic (metal oxide) and organic (conducting polymers and viologen).…”