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2023-04-22Author
Johannes, ChristopherMacher, SvenNiklaus, LukasSchott, MarcoHillmer, HartmutHartung, MichaelHeim, Hans-PeterSubject
620 Engineering Elektrochromes MaterialFensterPolyethylendioxythiophen <Poly-3,4-Ethylendioxythiophen>TitandioxidElektrolytPolycarbonateMetadata
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Aufsatz
Flexible Electrochromic Device on Polycarbonate Substrate with PEDOT:PSS and Color-Neutral TiO2 as Ion Storage Layer
Abstract
Electrochromic (EC) windows on glass for thermal and glare protection in buildings, often referred to as smart (dimmable) windows, are commercially available, along with rearview mirrors or windows in aircraft cabins. Plastic-based applications, such as ski goggles, visors and car windows, that require lightweight, three-dimensional (3D) geometry and high-throughput manufacturing are still under development. To produce such EC devices (ECDs), a flexible EC film could be integrated into a back injection molding process, where the films are processed into compact 3D geometries in a single automized step at a low processing time. Polycarbonate (PC) as a substrate is a lightweight and robust alternative to glass due to its outstanding optical and mechanical properties. In this study, an EC film on a PC substrate was fabricated and characterized for the first time. To achieve a highly transmissive and colorless bright state, poly(3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS) was used as the working electrode, while titanium dioxide (TiO2) was used as the counter electrode material. They were deposited onto ITO-coated PC films using dip- and slot-die coating, respectively. The electrodes were optically and electrochemically characterized. An ECD with a polyurethane containing gel electrolyte was investigated with regard to optical properties, switching speed and cycling behavior. The ECD exhibits a color-neutral and highly transmissive bright state with a visible light transmittance of 74% and a bluish-colored state of 64%, a fast switching speed (7 s/4 s for bleaching/coloring) and a moderately stable cycling behavior over 500 cycles with a decrease in transmittance change from 10%to 7%.
Citation
In: Polymers Volume 15 / Issue 9 (2023-04-22) eissn:2073-4360Sponsorship
Gefördert durch den Publikationsfonds der Universität KasselCitation
@article{doi:10.17170/kobra-202305198056,
author={Johannes, Christopher and Macher, Sven and Niklaus, Lukas and Schott, Marco and Hillmer, Hartmut and Hartung, Michael and Heim, Hans-Peter},
title={Flexible Electrochromic Device on Polycarbonate Substrate with PEDOT:PSS and Color-Neutral TiO2 as Ion Storage Layer},
journal={Polymers},
year={2023}
}
0500 Oax 0501 Text $btxt$2rdacontent 0502 Computermedien $bc$2rdacarrier 1100 2023$n2023 1500 1/eng 2050 ##0##http://hdl.handle.net/123456789/14756 3000 Johannes, Christopher 3010 Macher, Sven 3010 Niklaus, Lukas 3010 Schott, Marco 3010 Hillmer, Hartmut 3010 Hartung, Michael 3010 Heim, Hans-Peter 4000 Flexible Electrochromic Device on Polycarbonate Substrate with PEDOT:PSS and Color-Neutral TiO2 as Ion Storage Layer / Johannes, Christopher 4030 4060 Online-Ressource 4085 ##0##=u http://nbn-resolving.de/http://hdl.handle.net/123456789/14756=x R 4204 \$dAufsatz 4170 5550 {{Elektrochromes Material}} 5550 {{Fenster}} 5550 {{Polyethylendioxythiophen <Poly-3,4-Ethylendioxythiophen>}} 5550 {{Titandioxid}} 5550 {{Elektrolyt}} 5550 {{Polycarbonate}} 7136 ##0##http://hdl.handle.net/123456789/14756
2023-05-25T11:02:35Z 2023-05-25T11:02:35Z 2023-04-22 doi:10.17170/kobra-202305198056 http://hdl.handle.net/123456789/14756 Gefördert durch den Publikationsfonds der Universität Kassel eng Namensnennung 4.0 International http://creativecommons.org/licenses/by/4.0/ flexible electrochromic device smart windows PEDOT:PSS titanium dioxide polyurethane-based electrolyte 620 Flexible Electrochromic Device on Polycarbonate Substrate with PEDOT:PSS and Color-Neutral TiO2 as Ion Storage Layer Aufsatz Electrochromic (EC) windows on glass for thermal and glare protection in buildings, often referred to as smart (dimmable) windows, are commercially available, along with rearview mirrors or windows in aircraft cabins. Plastic-based applications, such as ski goggles, visors and car windows, that require lightweight, three-dimensional (3D) geometry and high-throughput manufacturing are still under development. To produce such EC devices (ECDs), a flexible EC film could be integrated into a back injection molding process, where the films are processed into compact 3D geometries in a single automized step at a low processing time. Polycarbonate (PC) as a substrate is a lightweight and robust alternative to glass due to its outstanding optical and mechanical properties. In this study, an EC film on a PC substrate was fabricated and characterized for the first time. To achieve a highly transmissive and colorless bright state, poly(3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS) was used as the working electrode, while titanium dioxide (TiO2) was used as the counter electrode material. They were deposited onto ITO-coated PC films using dip- and slot-die coating, respectively. The electrodes were optically and electrochemically characterized. An ECD with a polyurethane containing gel electrolyte was investigated with regard to optical properties, switching speed and cycling behavior. The ECD exhibits a color-neutral and highly transmissive bright state with a visible light transmittance of 74% and a bluish-colored state of 64%, a fast switching speed (7 s/4 s for bleaching/coloring) and a moderately stable cycling behavior over 500 cycles with a decrease in transmittance change from 10%to 7%. open access Johannes, Christopher Macher, Sven Niklaus, Lukas Schott, Marco Hillmer, Hartmut Hartung, Michael Heim, Hans-Peter doi:10.3390/polym15091982 Elektrochromes Material Fenster Polyethylendioxythiophen <Poly-3,4-Ethylendioxythiophen> Titandioxid Elektrolyt Polycarbonate publishedVersion eissn:2073-4360 Issue 9 Polymers Volume 15 false 1982
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