Colorless to Multicolored, Fast Switching, and Highly Stable Electrochromic Devices Based on Thermally Cross-Linking Copolymer

2021 ◽  
Author(s):  
Xiaojing Lv ◽  
Jin Li ◽  
Libin Xu ◽  
Xuchen Zhu ◽  
Alexey Tameev ◽  
...  
Keyword(s):  
Cross Linking ◽  
Electrochromic Devices ◽  
Fast Switching

Simplified All‐Solid‐State WO 3 Based Electrochromic Devices on Single Substrate: Toward Large Area, Low Voltage, High Contrast, and Fast Switching Dynamics

2020 ◽  
Vol 7 (3) ◽  
pp. 1901663 ◽  
Author(s):  
Pierluigi Cossari ◽  
Marco Pugliese ◽  
Cataldo Simari ◽  
Alessio Mezzi ◽  
Vincenzo Maiorano ◽  
...  
Keyword(s):  
Solid State ◽  
Low Voltage ◽  
High Contrast ◽  
Electrochromic Devices ◽  
Large Area ◽  
Fast Switching ◽  
Single Substrate ◽  
Switching Dynamics

Flexible electrochromic energy-saving windows with fast switching and bistability based on a transparent solid-state electrolyte

2019 ◽  
Vol 3 (11) ◽  
pp. 2514-2520 ◽  
Author(s):  
Jinming Zeng ◽  
Zhijun Wan ◽  
Mimi Zhu ◽  
Lianghui Ai ◽  
Ping Liu ◽  
...  
Keyword(s):  
Solid State ◽  
Energy Saving ◽  
Electrochromic Devices ◽  
Solid State Electrolyte ◽  
Fast Switching

The preparation and electrochromism of flexible electrochromic devices with fast switching and bistability based on a transparent solid-state electrolyte.

scholarly journals Fast Switching Electrochromic Devices Containing Optimized BEMA/PEGMA Gel Polymer Electrolytes

2013 ◽  
Vol 2013 ◽  
pp. 1-10 ◽  
Author(s):  
N. Garino ◽  
S. Zanarini ◽  
S. Bodoardo ◽  
J. R. Nair ◽  
S. Pereira ◽  
...  
Keyword(s):  
Near Infrared ◽  
Switching Time ◽  
Gel Polymer Electrolyte ◽  
Infrared Region ◽  
Electrochromic Devices ◽  
Fast Switching ◽  
Colored State ◽  
Poly Ethylene ◽  
First Time ◽  
Glycol Methyl Ether

An optimized thermoset gel polymer electrolyte based on Bisphenol A ethoxylate dimethacrylate and Poly(ethylene glycol) methyl ether methacrylate (BEMA/PEGMA) was prepared by facile photo-induced free radical polymerisation technique and tested for the first time in electrochromic devices (ECD) combining WO3sputtered on ITO as cathodes and V2O5electrodeposited on ITO as anodes. The behaviour of the prepared ECD was investigated electrochemically and electro-optically. The ECD transmission spectrum was monitored in the visible and near-infrared region by varying applied potential. A switching time of ca. 2 s for Li+insertion (coloring) and of ca. 1 s for Li+de-insertion (bleaching) were found. UV-VIS spectroelectrochemical measurements evidenced a considerable contrast between bleached and colored state along with a good stability over repeated cycles. The reported electrochromic devices showed a considerable enhancement of switching time with respect to the previously reported polymeric ECD indicating that they are good candidates for the implementation of intelligent windows and smart displays.

scholarly journals Ultraflexible, stretchable and fast-switching electrochromic devices with enhanced cycling stability

RSC Advances ◽  
2018 ◽  
Vol 8 (33) ◽  
pp. 18690-18697 ◽  
Author(s):  
Qian Liu ◽  
Zijie Xu ◽  
Wu Qiu ◽  
Chen Hou ◽  
Yanan Wang ◽  
...  
Keyword(s):  
Tungsten Trioxide ◽  
Cycling Stability ◽  
Electrochromic Devices ◽  
Styrene Sulfonate ◽  
Transparent Conducting Electrode ◽  
Fast Switching ◽  
Transparent Conducting ◽  
Conducting Electrode ◽  
Poly Styrene Sulfonate

We present a flexible sandwiched tungsten trioxide/silver nanotrough network/poly(3,4-ethylenedioxythiophene)–poly(styrene sulfonate) multi-layer transparent conducting electrode with prominent conductivity and transparency.

High Contrast Ratio and Fast-Switching Dual Polymer Electrochromic Devices

1998 ◽  
Vol 10 (8) ◽  
pp. 2101-2108 ◽  
Author(s):  
Shawn A. Sapp ◽  
Gregory A. Sotzing ◽  
John R. Reynolds
Keyword(s):  
Contrast Ratio ◽  
High Contrast ◽  
Electrochromic Devices ◽  
Fast Switching

scholarly journals Complementary hybrid electrodes for high contrast electrochromic devices with fast response

2019 ◽  
Vol 10 (1) ◽  
Author(s):  
Carsten Kortz ◽  
Alexander Hein ◽  
Marius Ciobanu ◽  
Lorenz Walder ◽  
Egbert Oesterschulze
Keyword(s):  
High Performance ◽  
Response Times ◽  
Fast Response ◽  
Electrochromic Device ◽  
Potential Range ◽  
High Contrast ◽  
Electrochromic Devices ◽  
Fast Switching ◽  
Camera Systems ◽  
Supporting Electrode

Abstract Fast switching ‘transparent-to-black’ electrochromic devices are currently under investigation as potential candidates in modern applications like e-papers or with additional functionality as ultracompact iris or switchable neutral filter in camera systems. However, recent electrochromic devices show either a lack of contrast or slow response times. To overcome these deficiencies we focus on a careful material composition of the colouring hybrid electrodes in our device. We have established a nanoporous Sb-doped SnO$${}_{2}$$ 2 electrode as supporting electrode for chemisorbed electrochromic tetraphenylbenzidine molecules due to its good conductivity in the redox potential range of the molecule. This hybrid electrode was combined with a modified nanoporous TiO$${}_{2}$$ 2 / viologen electrode to realize a high performance, complementary electrochromic device. Fast switching time constants of 0.5 s and concurrently high change in optical density $$\Delta$$ Δ OD = 2.04 at 605 nm confirm our successful concept. The achieved colouration efficiency of 440 cm$${}^{2}$$ 2 C$${}^{-1}$$ − 1 exceeds every high contrast device presented so far.

scholarly journals A Mini-Review: Pyridyl-Based Coordination Polymers for Energy Efficient Electrochromic Application

2021 ◽  
Vol 9 ◽  
Author(s):  
Shiyou Liu ◽  
Ping Zhang ◽  
Jianjian Fu ◽  
Congyuan Wei ◽  
Guofa Cai
Keyword(s):  
Energy Efficient ◽  
High Performance ◽  
Active Material ◽  
Cycling Stability ◽  
Electrochromic Devices ◽  
Switching Speed ◽  
Smart Windows ◽  
Coloration Efficiency ◽  
Fast Switching ◽  
Application Prospects

Electrochromic devices (ECDs) have a broad range of application prospects in many important energy efficient optoelectronic fields, such as smart windows, anti-glare rearview mirrors, low-energy displays, and infrared camouflage. However, there are some factors restricting their development, such as low coloration efficiency, slow switching speed, and poor cycling stability. Coordination polymer (CP) is a promising active material for the fabrication of high-performance ECD because of its ultrahigh coloration efficiency, fast switching speed, and excellent cycling stability. In this review, current advances of CP in energy efficient ECDs are comprehensively summarized and evaluated. Specifically, the effects of composition, coordination bonding, and microstructure of the bipyridine- and terpyridine-based CP on EC performances are introduced and discussed in detail. Then, the challenges and prospects of this booming field are proposed. Finally, the broad application prospects of the CPs-based EC materials and the corresponding devices are also demonstrated, which hold numerous revolutionary effects over our daily life. Hopefully, this review would provide useful guidance and further promote progress on the electrochromic and other optoelectronic fields.

Fast Switching ITO Free Electrochromic Devices

2013 ◽  
Vol 24 (9) ◽  
pp. 1228-1233 ◽  
Author(s):  
Jacob Jensen ◽  
Markus Hösel ◽  
Inyoung Kim ◽  
Jong-Su Yu ◽  
Jeongdai Jo ◽  
...  
Keyword(s):  
Electrochromic Devices ◽  
Fast Switching

Hybrid mesostructured electrodes for fast-switching proton-based solid state electrochromic devices

2013 ◽  
Vol 1 (1) ◽  
pp. 151-159 ◽  
Author(s):  
Basila Kattouf ◽  
Yair Ein-Eli ◽  
Arnon Siegmann ◽  
Gitti L. Frey
Keyword(s):  
Solid State ◽  
Electrochromic Devices ◽  
Fast Switching

Versatile displays based on a 3-dimensionally ordered macroporous vanadium oxide film for advanced electrochromic devices

2015 ◽  
Vol 3 (13) ◽  
pp. 3159-3166 ◽  
Author(s):  
Zhongqiu Tong ◽  
Haowei Yang ◽  
Li Na ◽  
Huiying Qu ◽  
Xiang Zhang ◽  
...  
Keyword(s):  
Oxide Film ◽  
Vanadium Oxide ◽  
Cycling Stability ◽  
Electrochromic Device ◽  
Electrochromic Devices ◽  
Switching Speed ◽  
Fast Switching ◽  
Ordered Macroporous ◽  
Good Cycling Stability ◽  
Fast Switching Speed

An electrochromic device based on a 3DOM vanadium oxide film and a PEDOT:PSS film was fabricated, and this device shows multicolor changes with fast switching speed and good cycling stability.

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