Nanostructured refractory thin films for solar applications

E. Ollier; N. Dunoyer; O. Dellea; H. Szambolics

doi:10.1117/12.2061376

27 August 2014 Nanostructured refractory thin films for solar applications

E. Ollier, N. Dunoyer, O. Dellea, H. Szambolics

Proceedings Volume 9172, Nanostructured Thin Films VII; 91720B (2014) https://doi.org/10.1117/12.2061376
Event: SPIE NanoScience + Engineering, 2014, San Diego, California, United States

Abstract

Selective solar absorbers are key elements of all solar thermal systems. Solar thermal panels and Concentrated Solar Power (CSP) systems aim respectively at producing heat and electricity. In both cases, a surface receives the solar radiation and is designed to have the highest optical absorption (lowest optical reflectivity) of the solar radiation in the visible wavelength range where the solar intensity is the highest. It also has a low emissivity in the infrared (IR) range in order to avoid radiative thermal losses. Current solutions in the state of the art usually consist in deposited interferential thin films or in cermets [1]. Structured surfaces have been proposed and have been simulated because they are supposed to be more efficient when the solar radiation is not normal to the receiving surface and because they could potentially be fabricated with refractory materials able to sustain high operating temperatures. This work presents a new method to fabricate micro/nanostructured surfaces on molybdenum (refractory metal with a melting temperature of 2623°C). This method now allows obtaining a refractory selective surface with an excellent optical selectivity and a very high absorption in the visible range. This high absorption performance was obtained by achieving a double structuration at micro and nano scales thanks to an innovative process flow.

Citation Download Citation

E. Ollier, N. Dunoyer, O. Dellea, and H. Szambolics "Nanostructured refractory thin films for solar applications", Proc. SPIE 9172, Nanostructured Thin Films VII, 91720B (27 August 2014); https://doi.org/10.1117/12.2061376

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available