fig2

Figure 2. (A) Device structure of OPVs with Ti₃C₂:PEDOT:PSS hybrid AIL; (B) Chemical structures of PEDOT:PSS; (C) Schematic of Ti₃C₂ nanosheet; (D) XPS spectrum of Ti₃C₂:PEDOT:PSS hybrid AIL; (E) Transmittance of hybrid AIL with and without Ti₃C₂ at different wavelengths; (F) The energy level structures of PEDOT:PSS, Ti₃C₂:PEDOT:PSS, PTzBI-oF, PYF-T-o and PFN-Br; (G) PL and (H) TRPL spectrum of PTzBI-oF:PYF-T-o blend films with (or without) Ti₃C₂ in the PEDOT:PSS interlayer; (I) SCLC hole mobility for PTzBI-oF:PYF-T-o devices with (or without) Ti₃C₂ in the PEDOT:PSS interlayer. OPVs: Organic photovoltaics; PEDOT:PSS: poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate); AILs: anode interfacial layers; PL: photoluminescence; TRPL: time-resolved photoluminescence.