| Abstract [eng] |
This thesis investigates charge injection and transport in organic field-effect transistors (OFETs) based on a trans-stilbene and PEPK polymer blend. The study analyzes the challenges of forming stilbene layers as well as the influence of contact materials and additional dielectric layers on transistor performance. The samples were fabricated using silver and gold contacts, while their properties were investigated using i-CELIV and saturation current measurement methods. The results showed that stilbene and PEPK blends can be used to fabricate functioning OFET devices in which the channel current can be controlled by the gate voltage. In some cases, silver contacts provided more efficient charge injection than gold contacts. The obtained charge carrier mobilities ranged from 4 to 19 cm²/Vs, although the results were strongly influenced by layer morphology and capacitance uncertainties. The findings demonstrate that stilbene and PEPK blends are promising materials for organic electronics applications; however, further research and optimization of the fabrication process are required. |
