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Proceedings Paper

Angular selective window coatings
Author(s): G. W. Mbise; David Le Bellac; Gunnar A. Niklasson; Claes-Goeran Granqvist
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Paper Abstract

Thin films were deposited at an oblique angle of incidence by electron-beam evaporation as well as reactive and non-reactive sputtering. We have produced evaporated Cr films and sputtered metallic and partially oxidized films of Al, Cr and Ti. The optical transmittance of the films was measured as a function of the angle of incidence, and pronounced angular selectivity was found in many cases. The evaporated films show the highest angular selectivity in the luminous transmittance, but also some of the sputtered ones display promising optical properties. The optical properties of the sputtered films could be modeled with effective medium theories.

Paper Details

Date Published: 9 September 1994
PDF: 10 pages
Proc. SPIE 2255, Optical Materials Technology for Energy Efficiency and Solar Energy Conversion XIII, (9 September 1994); doi: 10.1117/12.185369
Show Author Affiliations
G. W. Mbise, Chalmers Univ. of Technology (Sweden)
David Le Bellac, Uppsala Univ. (Sweden)
Gunnar A. Niklasson, Uppsala Univ. (Sweden)
Claes-Goeran Granqvist, Uppsala Univ. (Sweden)


Published in SPIE Proceedings Vol. 2255:
Optical Materials Technology for Energy Efficiency and Solar Energy Conversion XIII
Volker Wittwer; Claes G. Granqvist; Carl M. Lampert, Editor(s)

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