High-performance solution-processed plasmonic Ni nanochain-Al2O3 selective solar thermal absorbers

作者：Wang Xiaoxin^*; Li Haofeng; Yu Xiaobai; Shi Xiaoling; Liu Jifeng

来源：Applied Physics Letters, 2012, 101(20): 203109.

DOI：10.1063/1.4766730

• alumina
• cermets
• coatings
• gradient index optics
• nanostructured materials
• nickel
• optical materials
• plasmonics
• solar absorber-convertors

Selective solar thermal absorber coating is an important component of concentrated solar power systems. It maximizes the absorption of solar spectrum and minimizes thermal radiation losses in the mid-infrared regime. In this letter, we demonstrate a solution-processed plasmonic Ni nanochain-Al2O3 selective solar thermal absorber with a high solar absorptance >90% and a low thermal emittance loss <10%. Unlike conventional graded-index cermet coatings, the spectral selectivity is tailored by the lengths of Ni nanochains, elimating the requirement of costly vacuum deposition for stringent thickness control. These results open a path to utilize plasmonics for low-cost, high-performance solar thermal systems.

• 出版日期2012-11-12