| 초록 |
In organic electronic devices, solution-processed polymer semiconducting materials have been widely studied for a low-cost alternative to the conventional vacuum processed devices. Because the device performance from the polymer semiconductors can be governed by the nano-structure of the polymeric layer, lots of researchers have investigated the influence of solvent treatments during preparing the polymer thin layer. In this respect, we present the novel method to change the nano-structure of polymer semiconducting layer using laser-based heating. In this way, we have found that the laser irradiation can promote nanoscale reorganization of PEDOT:PSS layer and can enhance its electrical conductivity up to three orders of magnitude. For the polymer semiconducting layers in OLEDs, the laser-induced heat alters the solid or crystal structure so that the irradiated areas can be selectively deactivated in its electrical conductivity. |
