Background: An increasing interest has been recently grown in the development of nearly perfect absorber materials for solar energy collectors and more in general for all the thermophotovoltaic applications. Methods: Wide angle and broadband perfect absorbers with compact multilayer structures made of a sequence of ITO and TiN layers are here studied to develop new devices for solar thermal energy harvesting. Genetic Algorithms are introduced for searching the optimal thicknesses of the layers so to design a perfect broadband absorber in the visible range, for a wide range of angles of incidence from 0° to 50°, and for both polarizations. Results: Genetic Algorithms allow to design several optimized structures with 6, 8, and 10 layers reaching a very high average absorbance of 97%, 99% and 99.5% respectively together with a low hemispherical total emissivity (<20%) from 200 °C till 400 °C. Conclusions: The proposed multilayer structures use materials with high thermal stability, and high melting temperature, can be fabricated with simple thin film deposition techniques, appearing to have very promising applications in solar thermal energy harvesting.
Optimization of a perfect absorber multilayer structure by genetic algorithms / Li Voti, Roberto. - In: JOURNAL OF THE EUROPEAN OPTICAL SOCIETY. RAPID PUBLICATIONS. - ISSN 1990-2573. - STAMPA. - 14:1(2018), pp. 1-12.
|Titolo:||Optimization of a perfect absorber multilayer structure by genetic algorithms|
LI VOTI, Roberto [Writing – Original Draft Preparation] (Corresponding author)
|Data di pubblicazione:||2018|
|Citazione:||Optimization of a perfect absorber multilayer structure by genetic algorithms / Li Voti, Roberto. - In: JOURNAL OF THE EUROPEAN OPTICAL SOCIETY. RAPID PUBLICATIONS. - ISSN 1990-2573. - STAMPA. - 14:1(2018), pp. 1-12.|
|Appartiene alla tipologia:||01a Articolo in rivista|
File allegati a questo prodotto
|Voti-2018-Journal_of_the_European_Optical_Society-Rapid_Publications.pdf||copia dell'articolo||Documento in Post-print (versione successiva alla peer review e accettata per la pubblicazione)||Tutti i diritti riservati (All rights reserved)||Open Access Visualizza/Apri|