High‐Throughput Computing Guided Low/High Index Optical Coupling Layer for Record‐Performance Semitransparent Organic Solar Cells

Abstract Semitransparent organic solar cells (ST‐OSCs) can be made in different colors, allowing light to pass through, and yet absorb enough visible near‐infrared (NIR) generate electricity. However, it remains a challenge achieve high performing ST‐OSCs over the two competing indexes of power conversion efficiency (PCE) average transmittance (AVT). This work reports an effort develop record‐performance using low/high index optical coupling layer (OCL) 2D photonic‐structured antireflective (AR) coating. High‐throughput screening is used improve understanding OCL structure−performance relationships predicting NIR absorption enhancement for ST‐OSCs. The concurrent use Na 3 AlF 6 (170 nm)/ZnS (110 nm) OCL, identified among about 200 thousand simulated device configurations 900 nm pitch‐sized AR coating, fabricated nanoimprint lithography, enables ternary PM6:BTP‐eC9:L8‐BO‐based ST‐OSCs, achieving simultaneously record‐high PCE 15.2%, AVT 32%, impressive utilization 4.86%, favorable color‐rendering 82. results demonstrated this provide attractive option plethora applications self‐powered greenhouses building‐integrated photovoltaic systems.