New superstrate material enables flexible, lightweight and efficient thin film solar modules

DuPont's Kapton colorless polyimide film, a new material currently in development for use as a flexible superstrate for cadmium telluride thin film photovoltaic modules, has enabled a new world record for energy conversion efficiency. A Swiss team has now demonstrated a conversion efficiency of 13.8 percent using the new colorless film, leapfrogging their previous record of 12.6 percent and nearing that of glass.

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