| 초록 |
Polymer blending methods have been widely applied to make various organic electronic devices because beneficial properties of distinct polymers combined in a single composite can be simultaneously provided to the devices from simple and one-step fabrication procedure. We introduce a solution-processable method for preparing photo-curable and -patternable gate dielectrics using blend solutions composed of two discernible polymers: polystyrene (PS) derivatives and poly(melamine-co-formaldehyde)acrylate (PMFA). This polymer blend was found to form smooth films with good electrical stability, solvent resistance, and hydrophobic film surfaces via vertically graded phase separation.The dielectric properties could be controlled by varying the blending ratio of discernible polymers with a photoinitiator, yielding a solution that was subsequently spin-cast and cured by UV irradiation. OFETs based on several semiconductors showed high mobilities and excellent stability. |
