The increasing demands to further electrify and digitalize our society set demands for a green electrical energy storage technology that can be scaled between very small,and heavily distributed electrical energy sourc...The increasing demands to further electrify and digitalize our society set demands for a green electrical energy storage technology that can be scaled between very small,and heavily distributed electrical energy sources,to very large volumes.Such technology must be compatible with fast-throughput,large-volume and low-cost fabrication processes,such as using printing and coating techniques.Here,we demonstrate a sequential production protocol to fabricate supercapacitors including electrodes based on cellulose nanofibrils(CNF)and the conducting polymer PEDOT:PSS.Thin and lightweight paper electrodes,carbon adhesion layers and the gel electrolyte are fabricated using spray coating,screen printing,and bar coating,respectively.These all solid-state supercapacitors are flexible,mechanically robust and exhibit a low equivalent series resistance(0.22Ω),thus resulting in a high power density(∼104 W/kg)energy technology.The supercapacitors are combined and connected to a power management circuit to demonstrate a smart packaging application.This work shows that operational and embedded supercapacitors can be manufactured in a manner to allow for the integration with,for instance smart packaging solutions,thus enabling powered,active internet-of-things(IoT)devices in a highly distributed application.展开更多
The potential of the screen printing method for large-scale production of organic electrochemical transistors(OECTs),combining high production yield with low cost,is here demonstrated.Fully screen-printed OECTs of 1 m...The potential of the screen printing method for large-scale production of organic electrochemical transistors(OECTs),combining high production yield with low cost,is here demonstrated.Fully screen-printed OECTs of 1 mm^(2) area,based on poly(3,4-ethylenedioxythiophene)doped with poly(styrensulfonate)(PEDOT:PSS),have been manufactured on flexible polyethylene terephthalate(PET)substrates.The goal of this project effort has been to explore and develop the printing processing to enable high yield and stable transistor parameters,targeting miniaturized digital OECT circuits for large-scale integration(LSI).Of the 760 OECTs manufactured in one batch on a PET sheet,only two devices were found malfunctioning,thus achieving an overall manufacturing yield of 99.7%.A drain current ON/OFF ratio at least equal to 400 was applied as the strict exclusion principle for the yield,motivated by proper operation in LSI circuits.This consistent performance of low-footprint OECTs allows for the integration of PEDOT:PSS-based OECTs into complex logic circuits operating at high stability and accuracy.展开更多
Correction to:npj Flexible Electronics https://doi.org/10.1038/s41528-020-0078-9,published online 3 August 2020 The original version of the Supplementary Information associated with this Article contained an error in ...Correction to:npj Flexible Electronics https://doi.org/10.1038/s41528-020-0078-9,published online 3 August 2020 The original version of the Supplementary Information associated with this Article contained an error in Supplementary Fig.3,in which the bottom part of the figure is not displayed.展开更多
文摘The increasing demands to further electrify and digitalize our society set demands for a green electrical energy storage technology that can be scaled between very small,and heavily distributed electrical energy sources,to very large volumes.Such technology must be compatible with fast-throughput,large-volume and low-cost fabrication processes,such as using printing and coating techniques.Here,we demonstrate a sequential production protocol to fabricate supercapacitors including electrodes based on cellulose nanofibrils(CNF)and the conducting polymer PEDOT:PSS.Thin and lightweight paper electrodes,carbon adhesion layers and the gel electrolyte are fabricated using spray coating,screen printing,and bar coating,respectively.These all solid-state supercapacitors are flexible,mechanically robust and exhibit a low equivalent series resistance(0.22Ω),thus resulting in a high power density(∼104 W/kg)energy technology.The supercapacitors are combined and connected to a power management circuit to demonstrate a smart packaging application.This work shows that operational and embedded supercapacitors can be manufactured in a manner to allow for the integration with,for instance smart packaging solutions,thus enabling powered,active internet-of-things(IoT)devices in a highly distributed application.
基金This work was primarily supported by the Swedish foundation for Strategic Research(Silicon-Organic Hybrid Autarkic Systems,Reference number:SE13-0045).
文摘The potential of the screen printing method for large-scale production of organic electrochemical transistors(OECTs),combining high production yield with low cost,is here demonstrated.Fully screen-printed OECTs of 1 mm^(2) area,based on poly(3,4-ethylenedioxythiophene)doped with poly(styrensulfonate)(PEDOT:PSS),have been manufactured on flexible polyethylene terephthalate(PET)substrates.The goal of this project effort has been to explore and develop the printing processing to enable high yield and stable transistor parameters,targeting miniaturized digital OECT circuits for large-scale integration(LSI).Of the 760 OECTs manufactured in one batch on a PET sheet,only two devices were found malfunctioning,thus achieving an overall manufacturing yield of 99.7%.A drain current ON/OFF ratio at least equal to 400 was applied as the strict exclusion principle for the yield,motivated by proper operation in LSI circuits.This consistent performance of low-footprint OECTs allows for the integration of PEDOT:PSS-based OECTs into complex logic circuits operating at high stability and accuracy.
文摘Correction to:npj Flexible Electronics https://doi.org/10.1038/s41528-020-0078-9,published online 3 August 2020 The original version of the Supplementary Information associated with this Article contained an error in Supplementary Fig.3,in which the bottom part of the figure is not displayed.
