Fabrication of an Automatic Color-Tuned System with Flexibility Using a Dry Deposited Photoanode
| Autor: | Yoonchan Park, Minji Lee, Dahyun Choi, Kwangmin Kim, Caroline Sunyong Lee, Jung-Oh Choi |
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| Rok vydání: | 2018 |
| Předmět: |
Materials science
chemistry.chemical_element 02 engineering and technology Substrate (electronics) 010402 general chemistry 01 natural sciences Industrial and Manufacturing Engineering law.invention law Management of Technology and Innovation Solar cell Transmittance General Materials Science Renewable Energy Sustainability and the Environment business.industry Mechanical Engineering Doping 021001 nanoscience & nanotechnology 0104 chemical sciences Dye-sensitized solar cell chemistry Electrochromism Optoelectronics 0210 nano-technology Tin business Indium |
| Zdroj: | International Journal of Precision Engineering and Manufacturing-Green Technology. 5:643-650 |
| ISSN: | 2198-0810 2288-6206 |
| DOI: | 10.1007/s40684-018-0067-9 |
| Popis: | A self-powered electrochromic device was fabricated on an indium tin oxide-polyethylene naphthalate flexible substrate using a dyesensitized solar cell (DSSC) as a self-harvesting source; the electrochromic device was naturally bleached and operated under outdoor light conditions. The color of the organic electrochromic polymer, poly(3,4-ethylenedioxythiophene) polystyrene sulfonate, was shifted from pale blue to deep blue with an antimony tin oxide film as a charge-balanced material. Electrochromic performance was enhanced by secondary doping using dimethyl sulfoxide. As a result, the device showed stable switching behavior with a high transmittance change difference of 40% at its specific wavelength of 630 nm for 6 hrs. To improve the efficiency of the solar cell, 1.0 wt.% of Ag NWs in the photoanode was applied to the TiO2 photoanode. It resulted in an efficiency of 3.3%, leading to an operating voltage of 0.7 V under xenon lamp conditions. As a result, we built a standalone self-harvesting electrochromic system with the performance of transmittance switching of 29% at 630 nm, by connecting with two solar cells in a device. Thus, a self-harvesting and flexible device was fabricated to operate automatically under the irradiated/dark conditions. |
| Databáze: | OpenAIRE |
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