Abstract
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.
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