PHOTOVOLTAIC MODULES CONTAINING PLASTICISED INTERMEDIATE LAYER FILMS WITH HIGH VOLUME RESISTIVITY AND GOOD PENETRATION RESISTANCE

摘要

The invention relates to the use of plasticizer-containing films based on polyvinyl acetal and comprising more than 10 ppm of metal ions selected from the group of alkaline earth metals, zinc and aluminium and less than as 150 ppm of alkali metal ions for the production of photovoltaic modules. The films preferably exhibit an electrical volume resistivity of more than 1E11 ohm*cm in an ambient climate of 85 % RH/23 °C. The photovoltaic modules may be used as facade elements, roof surfaces, winter garden coverings, sound-insulating walls, balcony or balustrade elements, or as components of window surfaces.