Understanding the relative humidity (RH) response of poly (3, 4-ethylenedioxythiophene):
poly (styrenesulfonate)(PEDOT: PSS) is critical for improving the stability of organic
electronic devices and developing selective sensors. In this work, combined gravimetric
sensing, nanoscale surface probing, and mesoscale optoelectronic characterization are
used to directly compare the RH dependence of electrical and optical conductivities and
unfold connections between the rate of water adsorption and changes in functional …