Energy-Efficient Stacks—Covellite (CuS) on Polyethylene Terephthalate Film: A Sustainable Solution to Heat Management
| Autor: | Sing Teng Chua, Zhen Quan Cavin Ng, Ashutosh Rath, Daniel H. C. Chua, Stephen J. Pennycook, Ken Okano, Andrew Ts Wee, Shun Okano |
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| Rok vydání: | 2020 |
| Předmět: |
Fabrication
Materials science Passive cooling 02 engineering and technology engineering.material 010402 general chemistry 01 natural sciences chemistry.chemical_compound Coating Polyethylene terephthalate Physical and Theoretical Chemistry business.industry Covellite 021001 nanoscience & nanotechnology 0104 chemical sciences Surfaces Coatings and Films Electronic Optical and Magnetic Materials Wavelength General Energy chemistry visual_art engineering visual_art.visual_art_medium Optoelectronics Wetting 0210 nano-technology business Layer (electronics) |
| Zdroj: | The Journal of Physical Chemistry C. 124:3314-3321 |
| ISSN: | 1932-7455 1932-7447 |
| Popis: | Regulating the temperature of buildings has the highest expenditure of energy (35–40%); thus, transparent heat reflectors (THRs) have been at the forefront of passive cooling technology due to its ability to reflect near-infrared (NIR) wavelengths without compromising optical transmission. Current designs like metallic thin films and dielectric–metal–dielectric are expensive and face complications with material incompatibility, oxidation, and interdiffusion, which hamper their performance. A cost-effective THR using a single-layer coating has not yet been achieved due to the susceptibility of metals to oxidation. In this work, a layer of CuS was fabricated onto flexible polyethylene terephthalate (PET) via radio frequency magnetron sputtering (RFMS), a high throughput method known for its conformal large-area fabrication. The 150 nm-thick CuS-PET films demonstrated a visible transmission T550 nm of 64.1% and NIR reflectance of 50% that resulted in 8 °C passive cooling. Additionally, wetting the surface re... |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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