Investigations of Hard Coating and Heat Mirrors for Simultaneous Energy Conservation in a Photovoltaic/Solarthermic Hybrid System or for Use in a Secondary Reflector

The aim of this study was to develop special optical coatings with optimum spectral separation of the solar spectrum into the visible part being efficient for photovoltaic applications and in the part of thermal radiation for use in a thermal power plant. This requires high transmission in the range of lower wavelengths, and high reflectivity in the infrared (IR).