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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 15, Iss. 4 — Apr. 1, 1976
  • pp: 1012–1017

Transparent heat mirrors for solar-energy applications

John C. C. Fan and Frank J. Bachner  »View Author Affiliations


Applied Optics, Vol. 15, Issue 4, pp. 1012-1017 (1976)
http://dx.doi.org/10.1364/AO.15.001012


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Abstract

Transparent heat-mirror films, which transmit solar radiation but reflect ir thermal radiation, have potentially important applications in solar/thermal/electric conversion, solar heating, solar photovoltaic conversion, and window insulation. We have used rf sputtering to prepare two types of films: TiO2/Ag/TiO2 and Sn-doped In2O3. To characterize the properties of heat-mirror films for solar-energy collection, we define the parameters αeff, the effective solar absorptivity, and eff, the effective ir emissivity. For our Sn-doped In2O3 films, αeff/eff is comparable to the values of α/ reported for the leading selective absorbers. Even higher values of αeff/eff are obtained for the TiO2/Ag/TiO2 films.

© 1976 Optical Society of America

History
Original Manuscript: November 6, 1975
Published: April 1, 1976

Citation
John C. C. Fan and Frank J. Bachner, "Transparent heat mirrors for solar-energy applications," Appl. Opt. 15, 1012-1017 (1976)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-15-4-1012

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