Nanowerk  September 14, 2024 Despite its widespread use in many applications, poor chemical resistance and roughness of polycarbonate (PC) has hindered its adoption as a substrate in solar cell technologies. An international team of researchers (Italy, Germany, Iran) developed a solution-processed planarizing layer using a commercial ambient-curable refractory resin through blade coating. Blade coating decreased film roughness from 1.46 µm to 23 nm, lowered water vapor transmission rates (WVTR) by a half, and significantly improved solvent resistance enabling deposition of precursor inks. The power conversion efficiency (PCE) reached 13.0%. The unencapsulated PSCs retained 80% of initial PCE after 1776 h […]