Photovoltaic module comprising plasticized intermediate layer films having high radiation transmission

摘要

The invention relates to the use of plasticizer-containing, polyvinyl acetal-based films that have a UV transmission of more than 35% to manufacture photovoltaic modules.;The films preferably have a volume resistivity of more than 1E11 Ohm*cm in an ambient climate of 85% rH/23° C.;The photovoltaic modules can be used as façade elements, roof surfaces, conservatory paneling, acoustic barriers, balcony or curtain wall panels, or as elements in glazed surfaces.

主权项

1. A photovoltaic module, comprising a laminate made from
a) a transparent front cover, b) one or more photosensitive semiconductor layers, c) at least one plasticiser-containing, polyvinyl acetal-based film, and d) a rear cover,
wherein the plasticiser-containing, polyvinyl acetal-based film c) has a UV transmission at 280 to 380 nm greater than 35%, determined between two panels of white glass, each 2 mm thick in accordance with EN410; andwherein the plasticiser-containing, polyvinyl acetal-based film contains, relative to the overall film mixture in each case, less than 0.01% by weight aromatic UV absorbers, and 0.005 to 1% by weight sterically hindered amines (HALS) and/or sterically hindered aminoethers (NOR-HALS) as non-aromatic photoprotection agents.