High-performance free-standing PEDOT:PSS electrodes for flexible and transparent all-solid-state supercapacitors

High-performance free-standing PEDOT:PSS electrodes with not only superior optoelectronic performance and high flexibility but also excellent electrochemical performance were successfully fabricated via facile multilayer spin-coating of a doped PEDOT:PSS solution. Superior optoelectronic performance and high electrochemical performance could be simultaneously achieved via doping PEDOT:PSS and modulating the layer numbers of the spin-coated PEDOT:PSS. Flexible and transparent all-solid-state supercapacitors with both superior electrochemical performance and relatively high optical transparency were fabricated for the first time using the resultant high-performance PEDOT:PSS films as both the current collectors and the active electrodes.