Myung-Han Yoon Gwangju Institute of Science and Technology In this research, we report highly crystalline organic mixed ionic-electronic conductors (OMIECs) designed to overcome the inherent trade-off between electrical/electrochemical performance and long-term aqueous stability. First, by introducing a sulfuric acid treatment, we successfully crystallized poly(3,4-ethylenedioxythiophene):polystyrene sulfonate (PEDOT:PSS) films. These films exhibit excellent electrical, electrochemical, and optical […]