Low-resistance stretchable electrodes using a thick silver layer and a PDMS-PDMS bonding technique

In this paper, a stretchable silver electrode having high stretching capability and good stability is demonstrated using a poly (dimethyl siloxane) (PDMS) substrate bonding technique. By bonding two silver electrodes (bonding electrode), low initial sheet resistance and good stretching capability under a 38% strain condition were achieved. It was also shown that the bonding electrode has good stability under a 1000-cycle prolonged stress condition (15% strain). The origin of the good stretching capability of the bonding sample is explained as percolation of the current path between the top and bottom electrodes. Using a resistor network model, the percolation of the current path was quantitatively characterized.