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

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

High-contrast ratio and long lifetime polymer electrochromic devices (ECDs)

2005 ◽  
Author(s):  
Dai Ning ◽  
Chunye Xu ◽  
Lu Liu ◽  
Calen Kaneko ◽  
Minoru Taya
Keyword(s):  
Contrast Ratio ◽  
High Contrast ◽  
Electrochromic Devices ◽  
Long Lifetime

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.

High contrast ratio and fast switching polymeric electrochromic films based on water-dispersible polyaniline-poly(4-styrenesulfonate) nanoparticles

2010 ◽  
Vol 12 (1) ◽  
pp. 164-167 ◽  
Author(s):  
Sung Jong Yoo ◽  
JoonHyuk Cho ◽  
Ju Wan Lim ◽  
Sun Ha Park ◽  
Jyongsik Jang ◽  
...  
Keyword(s):  
Contrast Ratio ◽  
High Contrast ◽  
Water Dispersible ◽  
Fast Switching

scholarly journals Patterned waveguide liquid crystal displays

RSC Advances ◽  
2020 ◽  
Vol 10 (68) ◽  
pp. 41693-41702
Author(s):  
Yunho Shin ◽  
Jinghua Jiang ◽  
Guangkui Qin ◽  
Qian Wang ◽  
Ziyuan Zhou ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Switching Time ◽  
Contrast Ratio ◽  
Liquid Crystal Displays ◽  
High Contrast ◽  
High Brightness ◽  
Photo Polymerization ◽  
Ultrafast Switching ◽  
Light Waveguide ◽  
Polymer Stabilized

A polymer stabilized LC based light waveguide display is reported. Performance is improved by patterned photo-polymerization or electrode. It has high brightness, ultrafast switching time, high contrast ratio, and high transmittance for transparent and augmented displays.

scholarly journals Full-frame and high-contrast smart windows from halide-exchanged perovskites

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
You Liu ◽  
Jungan Wang ◽  
Fangfang Wang ◽  
Zhengchun Cheng ◽  
Yinyu Fang ◽  
...  
Keyword(s):  
Contrast Ratio ◽  
High Contrast ◽  
Smart Window ◽  
Frame Size ◽  
Smart Windows ◽  
Ideal Solutions ◽  
Ion Gel ◽  
And Control ◽  
Colour Rendering ◽  
Perovskite Photovoltaic

AbstractWindow glazing plays an essential role to modulate indoor light and heat transmission, which is a prospect to save the energy cost in buildings. The latest photovoltachromic technology has been regarded as one of the most ideal solutions, however, to achieve full-frame size (100% active area) and high-contrast ratio (>30% variable in visible wavelength) for smart window applicability is still a challenge. Here we report a photovoltachromic device combining full-transparent perovskite photovoltaic and ion-gel based electrochromic components in a vertical tandem architecture without any intermediated electrode. Most importantly, by accurately adjusting the halide-exchanging period, this photovoltachromic module can realize a high pristine transmittance up to 76%. Moreover, it possesses excellent colour-rendering index to 96, wide contrast ratio (>30%) on average visible transmittance (400-780 nm), and a self-adaptable transmittance adjustment and control indoor brightness and temperature automatically depending on different solar irradiances.

Stacked metal cathode for high-contrast-ratio polymeric light-emitting devices

2005 ◽  
Vol 86 (14) ◽  
pp. 143514 ◽  
Author(s):  
S. H. Li ◽  
H. Liem ◽  
C. W. Chen ◽  
E. H. Wu ◽  
Z. Xu ◽  
...  
Keyword(s):  
Contrast Ratio ◽  
High Contrast ◽  
Light Emitting ◽  
Light Emitting Devices ◽  
Metal Cathode
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