Patent ID: 6992322

Claim:
A photosensing organic field effect transistor (POFET), comprising: a substrate insulating layer, the insulating layer having a high relative dielectric constant and a first side and a second side; a gate electrode, the gate electrode being an electrical conductor, the gate electrode being positioned adjacent to the first side of the insulating layer; a semiconducting polymer layer, the semiconducting polymer layer being responsive to incident light, the semiconducting polymer layer having a first side, a second side, a first end and a second end, the second side of the semiconductor layer being adjacent the second side of the insulating layer; a source electrode, the source electrode being an electrical conductor, the source electrode being in electrical contact with the first end of the semiconductor layer; and a drain electrode, the drain electrode being an electrical conductor, the drain being in electrical contact with the second end of the semiconducting polymer layer, wherein a POFET saturation current gain of 100 or higher may be achieved.