| abstract |
The invention belongs to the field of polymer semiconductor materials, and discloses a polymer semiconductor with bridging asymmetric benzodiazole and/or pyridinediazole double acceptors, and a preparation method and application thereof. The structure of the polymer semiconductor is shown in formula (I). The invention provides a simple and efficient synthetic route, low development cost, high universality and good repeatability. The polymer solar cells and organic photodetectors prepared with the bridged asymmetric benzodiazole and/or pyridinediazole double acceptor polymer semiconductors reported in the present invention as active layers all exhibit excellent performances. The energy conversion efficiency of its polymer solar cells is above 7%, and the dark current density of organic photodetectors is below 10-6 mA/cm 2 , which fully demonstrates the use of this type of polymer semiconductor materials in organic photovoltaics, logic complementary circuits, organic Photodetectors, organic field effect transistors, organic light emitting diodes and other organic electronic devices have broad market prospects. |