Realizing Maximum Microwave Absorption of Poly(3,4-ethylenedioxythiophene) with a Data-Driven Method

Large reflection loss (RL) and broad effective bandwidth (Δf10) are two of the most important parameters for microwave-absorbing materials (MAMs). In this article, we report that a strong and broad microwave absorption can be obtained with poly(3,4-ethylenedioxythiophene) (PEDOT), with record-setting values over previous studies. These record-setting values are derived using a data-driven method to optimize the response parameters. We demonstrate that RL values are achieved of −54.0 dB centering 8.3 GHz with 3.4 mm thick 30.0 wt % PEDOT film and −42.6 dB centering 17.0 GHz with 1.5 mm film for 40.0 wt % PEDOT; Δf10 values of 5.8 and 5.2 GHz are shown with a film thickness of 2.1 and 1.7 mm, respectively.