Optical Properties and Enhanced Photothermal Conversion Efficiency of SiO2/A-Dlc Selective Absorber Films for A Solar Energy Collector Fabricated by Unbalance Sputter

Solar energy could become the most attractive alternative energy source. In this study we test an attractive new candidate material for solar energy collectors. It can be found that the higher the gas pressure is, the higher the sp2/sp3 area ratio, the greater the sputtering rate and the greater the...

Full description

Saved in:
Bibliographic Details
Published in:Physics procedia 2012, Vol.32, p.206-213
Main Authors: Lai, Fu-Der, Li, Wei-Yang, Huang, C.Y., Hua, Jui-Ming, Chang, Kai-Cheih, Cho, Ting-Pin, Tsai, Yuen-Hsun
Format: Article
Language:English
Subjects:
amorphous carbon
photothermal conversion efficiency
selective absorber film
silicon oxide
solar energy collector
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Solar energy could become the most attractive alternative energy source. In this study we test an attractive new candidate material for solar energy collectors. It can be found that the higher the gas pressure is, the higher the sp2/sp3 area ratio, the greater the sputtering rate and the greater the optical absorption. The photothermal conversion efficiency of a SiO2 coating on the amorphous diamond-like carbon (a-DLC) selective absorber films deposited on the Cr/mirror like Al substrate is 93.2% as the film thickness of a SiO2 coating is 105nm. The coatings also increase the protective properties for a longer service life. This makes the SiO2 coated a-DLC film a promising new candidate material for solar selective absorber films. The SiO2/a-DLC selective absorber films also were deposited on the Al extrusion substrates.
ISSN:1875-3892
1875-3892
DOI:10.1016/j.phpro.2012.03.543