Refractory absorber/emitter using monolayer of ceramic microparticles

First published in
Proceedings of SPIE  
Number in series
9885
Article Number
98851K
Citation
Proceedings of SPIE - The International Society for Optical Engineering (9885): 98851K (2016)
Contribution to Conference
Photonic Crystal Materials and Devices XII  
Publisher DOI
10.1117/12.2227844
Scopus ID
2-s2.0-84982266822
Publisher
SPIE
ISBN
978-1-5106-1246-4
978-1-5106-1245-7
We present a self-assembled refractory absorber/emitter without the necessity to structure the metallic surface itself, still retaining the feature of tailored optical properties for visible light emission and thermophotovoltaic (TPV) applications. We have demonstrated theoretically and experimentally that monolayers of zirconium dioxide (ZrO2) microparticles on a tungsten layer can be used as large area, efficient and thermally stable selective absorbers/emitters. The band edge of the absorption is based on critically coupled microsphere resonances. It can be tuned from visible to near-infrared range by varying the diameter of the microparticles. We demonstrated the optical functionality of the structure after annealing up to temperatures of 1000°C under vacuum conditions. In particular it opens up the route towards high efficiency TPV systems with emission matched to the photovoltaic cell.
Subjects
absorption
high temperature photonics
Metamaterials
selective emitters
subwavelength structures
DDC Class
600: Technik
Funding(s)
SFB 986: Teilprojekt C2 - Keramikbasierte hochtemperaturstabile Wärmestrahlungsreflektoren und Strukturfarben  
SFB 986: Teilprojekt C4 - Deposition, Ordnung und mechanische Stabilität von Beschichtungen aus assemblierten Partikeln mit enger Größenverteilung  
More Funding Information
Financial support from the German Research Foundation (DFG) via SFB 986 "Tailor-Made Multi-Scale Materials Systems: M³", projects C2, C4 and C6.