Modelling switching of electrochromic devices—a route to successful large area device design

Bell, John; Matthews, Jeremy; Skryabin, Igor

doi:10.1016/s0167-2738(02)00385-5

Cited by 20 publications

(10 citation statements)

References 8 publications

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“…444 Specifically, EC foils may be of much interest for membrane architecture 445,446 by being able to regulate energy flows and lighting in large constructions with very little embedded energy. The ''smart'' windows technology is thus able to yield environmental benefits, and in this context it is important to have environmental assessments regarding EC glazing production, as reported recently by Syrrakou et al 447 Economics aspects of the technology have been modeled 448 as well as diverse applications issues [449][450][451] including net energy performance of EC skylights. 9 The order of magnitude of the energy savings possible with ''smart'' windows technology is considered next, following previous work at the authors' laboratory.…”

Section: Some Applications Aspectsmentioning

confidence: 99%

Electrochromics for smart windows: thin films of tungsten oxide and nickel oxide, and devices based on these

2007

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Section: Some Applications Aspectsmentioning

confidence: 99%

Electrochromics for smart windows: thin films of tungsten oxide and nickel oxide, and devices based on these

2007

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“…According also to the phase plots, these features seem to be similar to those of a Randles cell, as suggested by Bell et al for this kind of devices. 4 Nyquist plots of the smallest device are shown in Fig. 3.…”

Section: Optical Engineeringmentioning

confidence: 99%

Electrical analysis of new all-plastic electrochromic devices

et al. 2006

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Abstract. New all-plastic electrochromic devices have been manufactured using commercial PEDOT foils and classical polymer electrolyte electrodeposition techniques. Several devices with different areas have been electrically characterized by using an impedance spectroscopy technique. After a brief description of the manufacturing process, we discuss electrical properties with the size of the device. Real and imaginary parts of the impedance have been plotted as a function of frequency. Some interesting conclusions have been derived from those plots, and some improvements in manufacturing process of this kind of devices are also proposed.

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“…It is because the temperature increment shows a positive impact on the kinetics of the electrochemical reaction . More specifically, the ion diffusion behavior as the rate-limiting step in the EC reaction is strongly influenced by the temperature. , The number of intercalation ions in/out of the film increases with the increased temperature, binding/separating more electrons and resulting in a larger optical modulation with the same operating conditions (voltage and time). , Fortunately, the device is still capable of showing a reversible electrochemical behavior at the ultralow temperature of −40 °C. To prove its tolerance in harsh conditions, prolonging the interaction time to involve sufficient ions/electrons is an effective method.…”

Section: Resultsmentioning

confidence: 99%

“…38 More specifically, the ion diffusion behavior as the rate-limiting step in the EC reaction is strongly influenced by the temperature. 39,40 The number of intercalation ions in/ out of the film increases with the increased temperature, binding/separating more electrons and resulting in a larger optical modulation with the same operating conditions (voltage and time). 41,42 Fortunately, the device is still capable of showing a reversible electrochemical behavior at the ultralow temperature of −40 °C.…”

Section: Zn 2ementioning

confidence: 99%

Temperature-Dependent Electrochromic Devices for Energy-Saving Dual-Mode Displays

Fang

et al. 2023

ACS Appl. Mater. Interfaces

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Electrochromic (EC) devices show promising prospects with the increasing demand for energy-efficient and sustainable technologies. Multifunctionality integration is an inevitable characteristic for EC devices to adapt to changing environments. Herein, a dual-mode temperature-dependent EC device is demonstrated for the first time. Combined with the transparent PVA/EG-ZnCl 2 organohydrogel electrolyte, the devices exhibit good EC performances over a wide temperature range (−40 to 40 °C). The evolutions of ion/electron transport kineticsrelated indicators with temperature are further explored and simulated to reveal the mechanism of the temperature dependence of EC devices. Significantly, the optimized tungsten oxide-based EC device shows high performances at the extremely low temperature of −40 °C with a large transmittance modulation (80.8% @660 nm) and outstanding optical memory effects (97.3% retention of the initial transmittance modulation after 32 h) without electrical energy consumption. Furthermore, with a perovskite quantum dot photoluminescence film serving as the backlight, the device can switch display modes between emissive and reflective to realize its functionality in bright or dark conditions. This work provides a broad application prospect for EC devices in diverse environments of light (bright/dark) and temperature (hot/cold).

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Modelling switching of electrochromic devices—a route to successful large area device design

Cited by 20 publications

References 8 publications

Electrochromics for smart windows: thin films of tungsten oxide and nickel oxide, and devices based on these

Electrochromics for smart windows: thin films of tungsten oxide and nickel oxide, and devices based on these

Electrical analysis of new all-plastic electrochromic devices

Temperature-Dependent Electrochromic Devices for Energy-Saving Dual-Mode Displays

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