Extended Data Fig. 4: Raman spectra and GPC curves of the polymer donors.
(a) Raman spectra and (b) GPC curves of the polymer thin films before and after photo-aging. Discussion on Raman and GPC changes arising from side-chain cross-linking, see Supplementary Note 4. The simulated Raman spectra of polymer donors and their degradation modes are presented in Supplementary Figs. 17–29. The Raman spectra for 500-hour aged polymer films are presented in Supplementary Fig. 35. The LBO values and chemical structures of the model polymers for DFT calculations are presented in Supplementary Figs. 33. PCE10 with BDT-TT linkage is more photostable than PTQ10 in the absence of O2, see discussion in Supplementary Fig. 39.
