Design of selective surfaces for solar energy collection

D. M. Trotter, H. G. Craighead, A. J. Sievers

Research output: Contribution to journalArticle

8 Scopus citations

Abstract

3umerical calculations have been done to determine αTHS, the total hemispherical solar absorptivity, and εTH, the total hemispherical emissivity in the infrared, of selective surfaces composed of a dielectric film on a metal substrate. The selectivity of the surface as a function of n ̂L = nL + ikL, the refractive index of the film, is discussed, as well as the effect of grading the index of the film. It is concluded that the most effective film is one having nL as close to unity as possible through its entire thickness while kL increases from zero at the front surface to a larger value at the back surface.

Original languageEnglish (US)
Pages (from-to)63-68
Number of pages6
JournalSolar Energy Materials
Volume1
Issue number1-2
DOIs
StatePublished - Feb 1979

ASJC Scopus subject areas

  • Engineering(all)

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