Fig. 6: Correlation analysis.

a Molecular structures diagram of BO-4Cl, BTP-S7, BTP-S8, and BTP-S9. b Morphological characteristics matrix of RMS, π–π stacking distance and domain size. c Macroscopic factors matrix of μe, ΔE3, τexciton (exciton lifetime for pure acceptors) and τh (total average hole transfer time). d Device performances comparison among four OPVs.