Photodeposited Amorphous Oxide Films for Electrochromic Windows
| Autor: | Rebecca S. Sherbo, Curtis P. Berlinguette, Jingfu He, Wei Cheng, Noah J. J. Johnson, Kevan E. Dettelbach |
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| Rok vydání: | 2018 |
| Předmět: |
Materials science
General Chemical Engineering Oxide 02 engineering and technology 010402 general chemistry 01 natural sciences Biochemistry chemistry.chemical_compound Materials Chemistry Environmental Chemistry Thin film Deposition (law) business.industry Biochemistry (medical) Amorphous oxide General Chemistry 021001 nanoscience & nanotechnology Tungsten trioxide 0104 chemical sciences Colored chemistry Electrochromism Optoelectronics 0210 nano-technology business Change color |
| Zdroj: | Chem. 4:821-832 |
| ISSN: | 2451-9294 |
| Popis: | Summary Electrochromic windows dynamically control solar irradiation to buildings by using transition-metal oxide films that change color in response to an electrical current. Electrochromic glass companies currently manufacture these films by physical deposition methods. We report here a solution-based "photodeposition" protocol that forms layers of electrochromically active metal oxides (e.g., WO 3 , Nb 2 O 5 , MoO 3 , and V 2 O 5 ) on a timescale that rivals current industry practice. Indeed, the high-porosity WO 3 thin films prepared in this study displayed electrochromic performance parameters—including an optical modulation of 70% at 700 nm, colored and bleached interchange times on the order of seconds, and a coloration efficiency > 130 cm 2 /C—that are commensurate with the state of the art. This photodeposition method is scalable and therefore offers a potentially significant advancement for the large-scale deployment of electrochromic windows. |
| Databáze: | OpenAIRE |
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