Hunting down the ohmic contact of organic field-effect transistor Project supported by the Slovak Research and Development Agency (Grant Nos. APVV-17-0501 and APVV-17-0522) and the Slovak Grant Agency for Science (Grants No. 1/0776/15). |
Voltage dependence of observed contact resistance of the OFET devices using various metals for source/drain electrodes. Solid lines stand for various models ((a) current crowding, (b) resistive network, (c) Fowler–Nordheim tunneling, and (d) thermionic injection) of the contact resistance. |