| 초록 |
Highly conductive stretchable electrodes used in stretchable transistors and circuits, sensors and actuators, light emitting diode (LED) arrays, and energy harvesting devices are critical components of the stretchable devices. The percolation theory which is used to fabricate a high-performance stretching electrodes, affects stretching properties and conductivity depending on the amount of conductive filler in paste. These two are trade-off relationship, so it is very important to solve them and find the optimal composition. In order to solve this problem and find the optimal composition, many research groups developed stretching electrodes using secondary filler addition and wrinkle pattern for stretching electrode fabrication. Here, we fabricate a fast and precise serpentine lattice structured pattern using a photosensitive paste combined with a polymer, and report the effect of this pattern on the electrical properties during stretching. Through rational design of electrode structures and constituent material properties, we obtained high-performance electrodes with exceptional mechanical stretchability and stable conductivity compared with unstructured electrodes. In addition, after the circuit for light-emitting diode (LED) was manufactured, the possibility of application was confirmed by measure electrical characteristics during stretching. |
