Designing Thickness-Insensitive Cathode Interlayers via Constructing Noncovalently Conformational Locks for Highly Efficient Non-fullerene Organic Solar Cells

A notable PCE of 15.31% was achieved for a thick cathode interlayer (53 nm) based on PF-BDT with “Noncovalent conformational lock”, which stands out as one of the highest reported PCEs for organic cathode interlayer with a thickness exceeding 50 nm.