Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9567001 | Applied Surface Science | 2005 | 4 Pages |
Abstract
In this paper, we describe new film structures based on porous silica and nanosized carbon for selective solar absorbers application. The films show high absorbance in the solar-spectral region and low emittance in the IR region. The best results for 1000 nm thick films of nanocomposite silica-carbon has excellent optical parameters, absorbance αs = 0.94 and IR emissivity of É = 0.15. The films show good stability under the influence of humidity and high temperatures (250-300 °C). This new solar absorber structure offers low cost production and both the materials are easily available and non-toxic. The overall process of film preparation is simple and works under “green-chemistry” conditions.
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Authors
Dahn Katzen, Esthy Levy, Yitzhak Mastai,