Novel Mo-Si sub(3)N sub(4) based selective coating for high temperature concentrating solar power applications

A novel selective coating material based on Mo-Si sub(3)N sub(4) has been investigated for the first time. Accurate combination of the individual component layers based on optical simulations and precise control of layers thickness and composition leads to high solar absorptivity ([alpha] sub(Sol)=0...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:Solar energy materials and solar cells 2014-03, Vol.122, p.217-225
Hauptverfasser: Cespedes, Eva, Wirz, Men, Sanchez-Garcia, J A, Alvarez-Fraga, L, Escobar-Galindo, R, Prieto, C
Format: Artikel
Sprache:eng
Schlagworte:
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:A novel selective coating material based on Mo-Si sub(3)N sub(4) has been investigated for the first time. Accurate combination of the individual component layers based on optical simulations and precise control of layers thickness and composition leads to high solar absorptivity ([alpha] sub(Sol)=0.926) and low thermal emissivity ([epsilon] sub(25 c)=0.017) on a silver film, resulting in a high solar thermal energy conversion efficiency. The tandem absorber is stable in moderate vacuum at temperatures above 600 C showing low emissivity (estimated value at 600 C is [epsilon] sub(600c)=0.109) evidencing its relevance for high temperature solar selective applications. A full optical and thermal analysis of a parabolic trough concentrator (PTC) system confirmed the potential of the novel coating material to be used for CSP technology.
ISSN:0927-0248
DOI:10.1016/j.solmat.2013.12.005