Journal ArticleDOI
Transparent heat mirrors for solar-energy applications.
John C. C. Fan,Frank J. Bachner +1 more
TLDR
To characterize the properties of heat-mirror films for solar-energy collection, the parameters alpha(eff), the effective solar absorptivity, and epsilon(eff, the effective ir emissivity are defined and comparable to the values of alpha/epsilon reported for the leading selective absorbers.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.read more
Citations
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Journal ArticleDOI
Evaporated Sn‐doped In2O3 films: Basic optical properties and applications to energy‐efficient windows
I. Hamberg,Claes-Göran Granqvist +1 more
TL;DR: In this paper, the authors reviewed work on In2O3:Sn films prepared by reactive e−beam evaporation of In2 O3 with up to 9 mol'% SnO2 onto heated glass.
Journal ArticleDOI
X-ray photoemission spectroscopy studies of Sn-doped indium-oxide films
TL;DR: In this paper, the In and Sn 3d3/2 and 3d5/2 ESCA peaks and the oxygen 1s peak of Sn-doped In2O3 films were compared with those for In 2O3, SnO, Sn2O2, and Sn3O4 powders.
Journal ArticleDOI
Electrical properties and defect model of tin-doped indium oxide layers
G. Frank,H. Köstlin +1 more
TL;DR: In this article, a defect model for tin-doped In2O3:Sn is developed, which comprises two kinds of interstitial oxygen, one of which is loosely bound to tin, the other forming a strongly bound Sn2O4 complex.
Journal ArticleDOI
Photooxidative self-cleaning transparent titanium dioxide films on glass
TL;DR: In this paper, the authors measured the rate of decrease in the integrated IR absorbance associated with the C-H stretching vibrations of a thin solution-cast film of stearic acid under 365 nm or 254 nm (0.8 mW/cm2) irradiation.
Journal ArticleDOI
Spectral beam splitting technology for increased conversion efficiency in solar concentrating systems: a review
Anne Gerd Imenes,David R. Mills +1 more
TL;DR: A review of the various solar hybrid beam splitting systems proposed in the literature and the different spectrum splitting strategies employed is presented in this article, where the authors present a review of different spectrum-splitting strategies employed.
References
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Journal ArticleDOI
Transparent heat‐mirror films of TiO2/Ag/TiO2 for solar energy collection and radiation insulation
TL;DR: Transparent heat-mirror films of TiO2/Ag/TiO2 on glass with a visible transmission of 84% and an infrared reflectivity of 98-99% have been fabricated by rf sputtering as mentioned in this paper.
Journal ArticleDOI
Properties of Sn‐Doped In2 O 3 Films Prepared by RF Sputtering
John C. C. Fan,Frank J. Bachner +1 more
TL;DR: In this article, an Rf sputtering process was used without postdeposition annealing to prepare Sn-doped In/sub 2/O/sub 3/ films with low electrical resistivity (down to 2 x 10/sup -4/ ohm-cm), high visible transmission, and high infrared reflectivity for applications as transparent conductors and heat mirrors.
Journal ArticleDOI
A new solar selective surface
TL;DR: In this paper, a waveguide method of providing a selective surface for solar energy applications is described, and some measurements of a vacuum-deposited mesh are given, and elementary theory indicates that ratios of solar absorptance to thermal emittance of 30:1 should be possible at temperatures of about 200°C.