One-step synthesis of ultrathin, solvent-resistant, intrinsically stretchable polymer dielectrics for electronic skin systems
발표자
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초록
내용
There has been a lack of materials that offer high insulating performance and solvent resistance at ultrathin thickness, which is essential for the monolithic fabrication of highly integrated stretchable electronic systems. Here, we present a vapor-phase synthesized stretchable copolymer dielectric film. Through precise control of the copolymer's chemical composition, we achieve a dielectric constant of 4.39 and robust insulating performance at a thickness of 125 nm, which is maintained under 80% strain and through 1,000 stretching cycles. Using this dielectric, we fabricated high-performance stretchable TFTs with hysteresis-free, low-voltage operation (＜10 V) under 50% strain. Moreover, an intrinsically stretchable, low-power 5 × 5 active-matrix organic TFT array was demonstrated, thanks to the dielectric's superior solvent resistance. This ultrathin, high-k, stretchable dielectric film shows promise as a platform material for reliable system-level circuits in electronic skin.