ACS Applied Electronic Materials · 2020 · 26 citations · 48 references
Natural SciencesMaterials EngineeringMaterials ScienceElectronic MaterialsMicrowave EngineeringThin FilmsElectronic Material CharacterizationHigh-performance PolymersMicrowave MaterialsOrganic SemiconductorsPolymer CharacterizationPolymer Thin FilmsBandwidthBroadband AbsorptionFilm ThicknessFilm Thickness ControlMicrowave Absorbing MaterialsMicrowave AbsorptionPoly(3, 4-Ethylenedioxythiophene)Polythiophene
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.
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