Rapid bleaching of photoelectrochromic device by the simple addition of Pt catalyst in WO3 layer
| Autor: | Sunghyeok Park, Saad Sarwar, Thuy Thi Dao, Chi-Hwan Han, Sungjun Hong |
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| Rok vydání: | 2021 |
| Předmět: |
Materials science
Bleach Renewable Energy Sustainability and the Environment business.industry Oxide 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Surfaces Coatings and Films Electronic Optical and Magnetic Materials Catalysis chemistry.chemical_compound chemistry Optoelectronics Thermal stability Reference device 0210 nano-technology business Layer (electronics) |
| Zdroj: | Solar Energy Materials and Solar Cells. 224:110990 |
| ISSN: | 0927-0248 |
| DOI: | 10.1016/j.solmat.2021.110990 |
| Popis: | We have developed a transparent conducting oxide (TCO) free photoelectrochromic device with fast kinetics. The device can be colored fully in 3 min and bleach 95% within 30 min in dark. The addition of Pt catalyst in the WO3 layer catalyzes the back reaction in dark. The coloring is not affected by the addition of catalyst on the WO3 layer and the device shows the same amount of coloring as in the reference device. Both devices took 3 min to color completely but bleaching time was improved by a large margin. The reference device which does not have any Pt in WO3 or TiO2 layer takes 24 h to bleach fully compared to 30 min bleaching of Pt added device. The commercial feasibility of the device was checked by making a large area (60x48 cm2) prototype Further the thermal stability of the device was checked by keeping it under thermal stress at 65 °C. It was observed that the device was stable after 300 h. This device paves the way for commercializing the photoelectrochromic windows without the use of external power and transparent conducting oxide. |
| Databáze: | OpenAIRE |
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