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SOL-GEL AR Films for Solar Applications

Published online by Cambridge University Press:  28 February 2011

Carol S. Ashley
Affiliation:
Sandia National Laboratories, Albuquerque, New Mexico, 87185
Scott T. Reed
Affiliation:
Sandia National Laboratories, Albuquerque, New Mexico, 87185
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Abstract

Sol-gel derived antireflective films have been prepared for a variety of solar applications. The optical properties of the films are optimized by microstructure tailoring in solution by aging and/or in the film by heating and etching. The resulting film provides a quarter-wave, single layer interference surface with a reflectance minimum of <1% at 600 nm. We have applied sol-gel derived AR films to glass and plastics for solar thermal and photovoltaic applications, e.g., parabolic trough collector envelopes, plastic Fresnel lenses, and glazing materials for flat plate collectors.

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