Solution Processed UV-Visible Organic Photodetector with High Responsivity at Low Operating Voltage

The performance of organic semiconductor photodetectors depends on the choice of materials as the active layers. In this paper, we show that a 1:1 blend of PPDT2FBT-PC71BM blend gives high responsivity of about 0.33 A/W at 660 nm and is operable in the wavelength range of 350 to 720 nm. The causes for high efficiencies at low operating voltages are discussed.