Industrial Realization Of Low-Emittance Oxide/Metal/Oxide Films On Glass

K. Hartig; W. D. Munz; M. Scherer; V. Wittwer; Stahl

doi:10.1117/12.936293

1 December 1983 Industrial Realization Of Low-Emittance Oxide/Metal/Oxide Films On Glass

K. Hartig, W. D. Munz, M. Scherer, V. Wittwer, Stahl

Proceedings Volume 0428, Optical Materials and Process Technology for Energy Efficiency and Solar Applications; (1983) https://doi.org/10.1117/12.936293
Event: 27th Annual Technical Symposium, 1983, San Diego, United States

Abstract

Energy consumption can be reduced from room heating using coated architectural glass panes. With a system oxide/metal/oxide high transmittance in the visible as well as high reflectance in the thermal infrared can be achieved^2-7. This heat mirrors can be deposited economically by diode- and high rate sputtering. Of most interest are heat mirrors based on Cu, Ag and Au coatings. In the visible Au and Cu show a remarkable amount of absorptance which leads to a clear decrease in visible light transmittance. Best results are obtained with Ag based coatings. Ag is still high reflective even at the near U-V region. This part of re-flected energy can be converted to transmittance by a properly designed optical interference stack of the type oxide/metal/oxide. For a single pane an average value of visible light transmittance between 380 nm and 780 nm of 81 % is possible without loss of infrared reflec-tance at 8 4m below 90 % which corresponds to a low-emittance of 0.1. For this high quality a smooth growth of the Ag layer is necessary. Experiments have shown that a bombardement of the Ag layer with high energetic ions must be avoided as far as possible.

Citation Download Citation

K. Hartig, W. D. Munz, M. Scherer, V. Wittwer, and Stahl "Industrial Realization Of Low-Emittance Oxide/Metal/Oxide Films On Glass", Proc. SPIE 0428, Optical Materials and Process Technology for Energy Efficiency and Solar Applications, (1 December 1983); https://doi.org/10.1117/12.936293

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