Incorporation of A Classical Visible Non-Fullerene Acceptor into Host Binary Blend Enable Ternary High-Performance Semitransparent Polymer Solar Cells

Abstract Semitransparent photovoltaic devices can open a window for the photovoltaic application, such as building-integrated photovoltaics (BIPVs) and portable photovoltaic chargers and so on. We demonstrated a classical visible non-fullerene acceptor IT-M was incorporated into binary blend, and the new ternary blend (PM6:Y6:IT-M) film achieved a smooth surface morphology and a balanced charge transport compared to binary blend films. The ternary devices exhibit increased JSC of 26.44 mA cm−2 and PCE of 15.78% while remaining high VOC of 0.87 V. As a result, the ternary blend (PM6:Y6:IT-M) semitransparent devices achieved optimal PCE of 11.67% and AVT of 22.20%.