Figure 5: Opposite change in the PEDOT:PSS resistivity dependent on the weight ratio of PEDOT to PSS.
From: Growth Mechanism of Strain-Dependent Morphological Change in PEDOT:PSS Films

(a) Resistance change of PEDOT:PSS films with tensile strain for the PEDOT to PSS ratio of 1:6 and 1:2.5. (b) Relative change in the resistivity as a function of the strain for the 1:6 and 1:2.5 weight ratio. (c) Schematic illustration of evolution of PEDOT-rich cores with the strain dependent on the weight ratio of PEDOT to PSS.