Fig. 1: Molecular structures and basic properties.
From: The role of interfacial donor–acceptor percolation in efficient and stable all-polymer solar cells
a Molecular structures of Y6, PY-IT, PYF-T-o and PY-V-γ. b Normalized absorption spectra and photoluminescence (PL) spectra (excited at 680 nm) of Y6, PY-IT, PYF-T-o and PY-V-γ solutions in chloroform. c Normalized absorption spectra and PL spectra (excited at 720 nm) of Y6, PY-IT, PYF-T-o and PY-V-γ films. d, e Frontier orbitals of Y6 (d) and PY-IT (e) with the highest contribution to the transition moment of the S0-S1 transition, where side chains are substituted by methyl group. Similar results are found for PYF-T-o and PY-V-γ, see Supplementary Information.
