Stable organic thin-film transistors using full solution-processing and low-temperature sintering silver nanoparticle inks

We have fabricated electronically stable organic thin-film transistor (TFT) devices that are fully solution-processed and adopt printed electrodes using silver nanoparticles dispersed in organic solvents, whose sintering temperatures are 100 °C or less. The bottom-contact organic TFT devices showed good electrical characteristics, and exhibited threshold voltage shifts less than 2.0 V after applying a DC bias voltage stress for 104 s, which is attributed to relatively low contact resistance. These results demonstrate the feasibility of producing stable organic TFTs that are fully solution-processed at relatively low temperatures, for use in large-area flexible electronics applications.

Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slideHighlights► We fabricate organic TFTs using full solution-processing. ► The fabrication process of printed silver electrodes is less than 100 °C. ► Fabricated TFTs show good electrical characteristics. ► The threshold voltage does not change under the DC bias voltages.