scholarly journals New Roll‐to‐Roll Processable PEDOT‐Based Polymer with Colorless Bleached State for Flexible Electrochromic Devices

2019 ◽  
Vol 30 (6) ◽  
pp. 1906254 ◽  
Author(s):  
Sven Macher ◽  
Marco Schott ◽  
Mauro Sassi ◽  
Irene Facchinetti ◽  
Riccardo Ruffo ◽  
...  
Keyword(s):  
Electrochromic Devices ◽  
Roll To Roll ◽  
Bleached State

Chromogenics for Sustainable Energy: Some Advances in Thermochromics and Electrochromics

2010 ◽  
Vol 75 ◽  
pp. 55-64 ◽  
Author(s):  
Claes Goran Granqvist ◽  
Sara V. Green ◽  
Shu Yi Li ◽  
N.R. Mlyuka ◽  
Gunnar A. Niklasson ◽  
...  
Keyword(s):  
Energy Efficient ◽  
Recent Progress ◽  
Large Temperature ◽  
Electrochromic Devices ◽  
Temperature Dependent ◽  
Roll Coating ◽  
Coloration Efficiency ◽  
Roll To Roll ◽  
External Stimuli ◽  
Initial Results

Chromogenic materials are able to change their optical properties in response to external stimuli such as temperature (in thermochromic materials) and electrical charge insertion (in electrochromic materials). Below we review some recent advances for these types of materials. Specifically we first discuss the limitations of thermochromic VO2 films for energy efficient fenestration and show from calculations that nanocomposites containing VO2 can have superior properties and display high luminous transmittance and large temperature-dependent solar transmittance modulation. Even better results may be found for nanoparticles of VO2:Mg. In the second part of the paper we survey some recent progress for electrochromic devices and show that W oxide films have increased coloration efficiency when some Ni oxide is added. We also present initial results for flexible electrochromic foils produced by roll-to-roll coating and continuous lamination.

Bleached state transmittance in charge-unbalanced all-solid-state electrochromic devices

2003 ◽  
Vol 82 (20) ◽  
pp. 3379-3381 ◽  
Author(s):  
Kwang-Soon Ahn ◽  
Yoon-Chae Nah ◽  
Jin-Young Park ◽  
Yung-Eun Sung ◽  
Ki-Yun Cho ◽  
...  
Keyword(s):  
Solid State ◽  
Electrochromic Devices ◽  
Bleached State

Roll-to-roll processed PEDOT:PSS thin films: application in flexible electrochromic devices

2016 ◽  
Vol 27 (10) ◽  
pp. 11072-11079 ◽  
Author(s):  
Gustavo H. Santos ◽  
Anderson A. X. Gavim ◽  
Ricardo F. Silva ◽  
Paula C. Rodrigues ◽  
Ricardo C. Kamikawachi ◽  
...  
Keyword(s):  
Thin Films ◽  
Electrochromic Devices ◽  
Roll To Roll

Preparation, Electronic Structure and Optical Properties of the Electrochromic Thin Films

2004 ◽  
Vol 9 (4) ◽  
pp. 363-372 ◽  
Author(s):  
T. Lukaszewicz ◽  
A. Ravinski ◽  
I. Makoed
Keyword(s):  
Electrochromic Device ◽  
Orbital Method ◽  
Optical Parameters ◽  
Full Potential ◽  
Electrochromic Devices ◽  
Energy Bands ◽  
Conducting Film ◽  
Recombination Probability ◽  
Transparent Conducting ◽  
Smoluchowski Equations

A new multilayer electrochromic device has been constructed according to the following pattern: glass1/ITO/WO3/gel electrolyte/BP/ITO/glass2, where ITO is a transparent conducting film made of indium and tin oxide and with the surface resistance equal 8–10 Ω/cm2 . The electrochromic devices obtained in the research are characterized by great (considerable) transmittance variation between coloration and bleaching state (25–40% at applied voltage of 1.5 to 3 V), and also high coloration efficiency (above 100 cm2 /C). Selfconsistent energy bands, dielectric permittivity and optical parameters are calculated using a full-potential linear muffin-tin orbital method. The numerical solution of the Debye-Smoluchowski equations is developed for simulating recombination probability of Li+ ions in amorphous electrolyte.

Adjustable wetting of Liquid Flame Spray (LFS) TiO2-nanoparticle coated board: Batch-type versus roll-to-roll stimulation methods

2014 ◽  
Vol 29 (2) ◽  
pp. 271-279 ◽  
Author(s):  
Mikko Tuominen ◽  
Hannu Teisala ◽  
Janne Haapanen ◽  
Mikko Aromaa ◽  
Jyrki M. Mäkelä ◽  
...  
Keyword(s):  
Argon Plasma ◽  
Ultra Violet ◽  
High Volume ◽  
Point Of View ◽  
Flame Spray ◽  
Ambient Conditions ◽  
Batch Type ◽  
Roll To Roll ◽  
Long Time ◽  
Liquid Flame Spray

Abstract Superhydrophobic nanoparticle coating was created on the surface of board using liquid flame spray (LFS). The LFS coating was carried out continuously in ambient conditions without any additional hydrophobization steps. The contact angle of water (CAW) of ZrO2, Al2O3 and TiO2 coating was adjusted reversibly from >150° down to ~10−20° using different stimulation methods. From industrial point of view, the controlled surface wetting has been in focus for a long time because it defines the liquid-solid contact area, and furthermore can enhance the mechanical and chemical bonding on the interface between the liquid and the solid. The used stimulation methods included batch-type methods: artificial daylight illumination and heat treatment and roll-to-roll methods: corona, argon plasma, IR (infra red)- and UV (ultra violet)-treatments. On the contrary to batch-type methods, the adjustment and switching of wetting was done only in seconds or fraction of seconds using roll-to-roll stimulation methods. This is significant in the converting processes of board since they are usually continuous, high volume operations. In addition, the creation of microfluidic patterns on the surface of TiO2 coated board using simple photomasking and surface stimulation was demonstrated. This provides new advantages and possibilities, especially in the field of intelligent printing. Limited durability and poor repellency against low surface tension liquids are presently the main limitations of LFS coatings.

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