Microstructure, chromaticity and thermal stability of SS/TiC-WC/Al2O3 spectrally selective solar absorbers
| Autor: | Qingfen Geng, Gang Liu, Xiang-Hu Gao, Aiqin Wang, Pengjun Ma, Zhi-Ming Guo |
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| Rok vydání: | 2017 |
| Předmět: |
Materials science
02 engineering and technology engineering.material 010402 general chemistry 01 natural sciences symbols.namesake Optics Coating Thermal stability Fourier transform infrared spectroscopy Composite material Chromaticity Renewable Energy Sustainability and the Environment business.industry Sputter deposition 021001 nanoscience & nanotechnology 0104 chemical sciences Surfaces Coatings and Films Electronic Optical and Magnetic Materials Absorptance engineering symbols 0210 nano-technology Raman spectroscopy business Layer (electronics) |
| Zdroj: | Solar Energy Materials and Solar Cells. 164:63-69 |
| ISSN: | 0927-0248 |
| DOI: | 10.1016/j.solmat.2017.02.009 |
| Popis: | A new spectrally selective solar absorber coating of TiC-WC/Al2O3 tandem layer is designed and prepared on stainless steel (SS) substrate by magnetron sputtering. The coating consists of an absorptance layer (TiC-WC) and an antireflectance layer (Al2O3) from substrate to top. The new SS/TiC-WC/Al2O3 coating exhibits excellent selective absorbing properties with a high solar absorptance of 0.92 and a low thermal emittance of 0.11. The SS/TiC-WC/Al2O3 coating presents a purple color, which is further investigated by chromaticity study. The thermal stability of the coating is evaluated and characterized by SEM, XRD, UV–vis–NIR spectrophotometer, Fourier transform infrared spectroscopy, and Raman spectroscopy. Experimental results indicate that the coating is highly stable in vacuum at 500 °C for 100 h with a good solar selectivity of 0.92/0.11. |
| Databáze: | OpenAIRE |
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