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Proceedings Paper

Transparent Heat Reflecting Coatings (THRC) Based On Highly Doped Tin Oxide And Indium Oxide
Author(s): G. Frank; E. Kauer; H. Kostlin; F. J. Schmitte
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Paper Abstract

A number of highly doped oxides - in particular Sn02 and In203 - have been reported to show high infrared reflectivity while being transparent to visible radiation. Their optical behaviour is based on metal-like properties i.e. high concentration and mobility of the conduction electrons and a semiconductor bandgap of about 3 eV or higher. Thin films of these oxides can be adapted for many applications and a few examples will be described. The performance of these filters strongly depends on the doping and preparation conditions. Coatings prepared by spray pyrolysis show excellent electrical and optical properties, the upper limits of which are being discussed on the basis of defect mechanisms in solids.

Paper Details

Date Published: 12 April 1982
PDF: 10 pages
Proc. SPIE 0324, Optical Coatings for Energy Efficiency and Solar Applications, (12 April 1982); doi: 10.1117/12.933255
Show Author Affiliations
G. Frank, Philips GmbH Forschungslaboratorium Aachen (Germany)
E. Kauer, Philips GmbH Forschungslaboratorium Aachen (Germany)
H. Kostlin, Philips GmbH Forschungslaboratorium Aachen (Germany)
F. J. Schmitte, I. Physikalisches Institut der RWTH Aachen (Germany)

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

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