Air-stable, high contrast solution-phase electrochromic device based on an A-D-A viologen derivative

2019 ◽  
Vol 851 ◽  
pp. 113447 ◽  
Author(s):  
Huan Ling ◽  
Xiaowen Wu ◽  
Ke Li ◽  
Fengyu Su ◽  
Yanqing Tian ◽  
...  
Keyword(s):  
Solution Phase ◽  
Electrochromic Device ◽  
High Contrast ◽  
Contrast Solution

High contrast all-solid-state electrochromic device with 2,2,6,6-tetramethyl-1-piperidinyloxy (TEMPO), heptyl viologen, and succinonitrile

2012 ◽  
Vol 99 ◽  
pp. 135-140 ◽  
Author(s):  
Chih-Wei Hu ◽  
Kun-Mu Lee ◽  
Kun-Chieh Chen ◽  
Li-Chi Chang ◽  
Kuan-Yu Shen ◽  
...  
Keyword(s):  
Solid State ◽  
Electrochromic Device ◽  
High Contrast

Durability-reinforced electrochromic device based on surface-confined Ti-doped V2O5 and solution-phase viologen

2017 ◽  
Vol 248 ◽  
pp. 206-214 ◽  
Author(s):  
Mei Li ◽  
Duo Weng ◽  
Youxiu Wei ◽  
Jianming Zheng ◽  
Chunye Xu
Keyword(s):  
Solution Phase ◽  
Electrochromic Device

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.

A High Contrast Hybrid Electrochromic Device Containing PEDOT, Heptyl Viologen, and Radical Provider TEMPO

2010 ◽  
Vol 157 (7) ◽  
pp. P75 ◽  
Author(s):  
Chih-Wei Hu ◽  
Kun-Mu Lee ◽  
R. Vittal ◽  
Dung-Jing Yang ◽  
Kuo-Chuan Ho
Keyword(s):  
Electrochromic Device ◽  
High Contrast
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