Flexible and semi-transparent organic electrochemical transistors based on ultra-thin Au-PEDOT:PSS hybrid electrode for human skin electronics
발표자
()
초록
내용
Organic electrochemical transistors (OECTs) are one of the most promising device platforms for the field of bioelectronics. In comparison to other organic-based electronics, OECTs have several advantages including high transconductance, low voltage operation, and long-term stability. Here, we suggest an ultra-thin hybrid electrode was fabricated by thermally depositing ultra-thin sub-nano thickness Au electrode on crystalline poly(3,4 ethylene dioxythiophene): poly(styrene sulfonate) (PEDOT:PSS) thin film, which has a transmittance of 56% at visible range wavelength and low sheet resistance of 39.13 Ω/sq. Based on this structure, a semi-transparent and flexible top-contact structure OECT was fabricated that shows a transconductance of 2.5ms, and the performance was maintained even in the bending state(r=9mm). Finally, this semi-transparent OECT is attached to human skin to successfully perform electromyography (EMG) measurements.