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Selective absorption of carbon nanotube thin films for solar energy applications

: Abendroth, Thomas; Althues, Holger; Mäder, Gerrit; Kaskel, Stefan; Beyer, Eckhard


Solar energy materials and solar cells 143 (2015), S.553-556
ISSN: 0927-0248
European Commission EC
EFRE; 100124843/2768; Soltube
Fraunhofer IWS ()
carbon nanotubes; optically active materials; functional coatings; thin films; solar selective coating

A new spectrally selective coating based on carbon nanotubes (CNTs) for solar thermal applications is demonstrated. For optimized coatings solar absorptance coefficients α>0.92 and thermal emittance coefficients ε<0.1 (400°C) were achieved. These results render CNT coatings as a low cost and high performance alternative to commercially available vacuum deposited cermet coatings for concentrated solar power (CSP) application