摘要：Engineering the electrical properties of poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate)(PEDOT:PSS)holds great potential for various applications such as sensors,thermoelectric(TE)generators,and hole transport layers in solar *** strategies have been applied to achieve optimal electrical properties,including base solution ***,the working mechanism and the exact details of the structural transformations induced by base post-treatments are still *** this work,we present a comparative study on the post-treatment effects of using three common and green alkali base solutions:namely LiOH,NaOH,and *** structural modifications induced in the film by the base post-treatments are studied by techniques including atomic force microscopy,grazing-incidence wide-angle X-ray scattering,ultraviolet–visible–near-infrared spectroscopy,and attenuated total reflectance Fourier-transform infrared ***-induced structural modifications are responsible for an improvement in the TE power factor of the films,which depends on the basic solution *** results are explained on the basis of the different affinity between the alkali cations and the PSS chains,which determines PEDOT *** results presented here shed light on the structural reorganization occurring in PEDOT:PSS when exposed to high-pH solutions and may serve as inspiration to create future pH-/ion-responsive devices for various applications.