| 초록 |
Gelatin, a semi-solid electrolyte, is a kind of natural, protein-based, having great biocompatibility. Moreover, gelatin hydrogel has thermo-responsive characteristics allowing gelatin hydrogel to be easily processed into various shapes for electronics by solution process. In this work, we suggest gelatin hydrogel as electrolyte and demonstrate organic electrochemical transistors based on a sheet of gelatin. Especially, organic electrochemical transistor (OECT) is different from field-effect transistors in aspect of direct injection of ions from electrolyte into the active layer, usually PEDOT:PSS (Poly(3,4ethylenedioxythiophene) polystyrene sulfonate). We also modulate electrical characteristics of the OECT with respect to pH condition of gelatin hydrogel from acid to base, and analyze its characteristics based on electrochemical theory. Moreover, we also develop the gelatin based OECT to electrochemical logic circuits, such as NOT, NOR and NAND gate. |
