Extended Data Fig. 8: Characterization of the PEDOT:PSS_PFI composite film.
From: High-efficiency stretchable light-emitting polymers from thermally activated delayed fluorescence

(a) Chemical structures of PEDOT:PSS and PFI. (b and c) Optical microscopy images of PFI (b), and PEDOT:PSS_PFI composite film (c), under 100% strain. The stretching direction is horizontal, and the scale bar is 10 μm. (d) Raman spectra of PEDOT:PSS and PEDOT:PSS_PFI film under 632.8 nm laser excitation.