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Proceedings Paper

Solar control coating of Fabry Perot type for energy efficiency glass
Author(s): Joachim Szczyrbowski; Stephan Roegels
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Paper Abstract

A new layer system based on the interference filter of Fabry Perot type was investigated both by computer simulations and experimentally. The aim was to prepare by magnetron sputtering a Solar-control coating of the type TiN/Sn02/TiN for architectural applications on large glass sheets with improved optical and thermal performance. For this reason the sputtering process of TiN was investigated to find the optimum conditions resulting in uniform film appearance across the glass pane. It turned out that the best results in the optical uniformity were obtamed with an excessive amount of the nitrogen in the sputtering chamber. To obtain good mechanical durability an additional layer was sputtered between the second TiN and the top Sn02 film. The light and solar energy transmission and reflection of the final product were measured in the wave range from 0.28 to 2.5 jim. It turned out that at a given light transmission the direct solar energy transmission for the prepared coating was much lower than that for the conventional layer system of oxide/nitride/oxide. The measured shading coefficients for the glass with 35% light transmission were 0.55 and 0.46 for conventional and the new coating, respectively. Furthermore, the possible colour co-ordinates, the mechanical and chemical durability of the final coating have been measured.

Paper Details

Date Published: 1 August 1990
PDF: 12 pages
Proc. SPIE 1272, Optical Materials Technology for Energy Efficiency and Solar Energy Conversion IX, (1 August 1990); doi: 10.1117/12.20431
Show Author Affiliations
Joachim Szczyrbowski, Leybold AG (Germany)
Stephan Roegels, Leybold AG (Germany)


Published in SPIE Proceedings Vol. 1272:
Optical Materials Technology for Energy Efficiency and Solar Energy Conversion IX
Claes-Goeran Granqvist; Carl M. Lampert, Editor(s)

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