Figure 20.

a) Flexible PAP electrodes consisting of the ultra‐thin Ag film sandwiched between PEI and PEDOT:PSS. b) Diagram of the growth mechanism of the Ag film with the PEI nucleation inducer. c) Optical transmittance of three kinds of electrodes including Ag film, PEI‐Ag, and PAP. Insert: an electrode located on GIST logos. d) Increase in resistance versus the bending radius of the PAP and the commercial ITO. e) Device architecture. f) J−V characteristics of the OSCs. Reproduced with permission.19 Copyright 2018, Nature Publishing Group.