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Proceedings Paper

High Quality Transparent Heat Reflectors Of Reactively Evaporated Indium Tin Oxide
Author(s): I. Hamberg; A. Hjortsberg; C. G. Granqvist
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Paper Abstract

We report on transparent and heat-reflecting Indium-Tin-Oxide (ITO) films prepared by well controlled reactive electron-beam evaporation of In203+ 9 mol. % SnO2 onto glass in - 5x 10-4 Torr of 02. Typical results for 0.3 pm thick films deposited on substrates at 300°C were: visible light absorptance < 2 %, thermal infrared reflectance > 90 %, and dc resistivity 3x 10-4 Qcm. Similar properties were found for substrate temperatures down to 150°C, whereas a rapid deterioration took place at still lower temperatures. After antireflection coating with -0.1 pm of evaporated MgF2, the visible transmittance became - 1% larger than that of the uncoated glass, while the infrared reflectance increased by a few percent only. The ITO+ MgF2 coatings show much weaker iridescence than the bare ITO films.

Paper Details

Date Published: 12 April 1982
PDF: 6 pages
Proc. SPIE 0324, Optical Coatings for Energy Efficiency and Solar Applications, (12 April 1982); doi: 10.1117/12.933251
Show Author Affiliations
I. Hamberg, Chalmers University of Technology (Sweden)
A. Hjortsberg, Chalmers University of Technology (Sweden)
C. G. Granqvist, Chalmers University of Technology (Sweden)

Published in SPIE Proceedings Vol. 0324:
Optical Coatings for Energy Efficiency and Solar Applications
Carl M. Lampert, Editor(s)

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