| abstract |
The invention discloses an interface modified organic solar cell and a preparation method thereof; the organic solar cell comprises a cathode substrate, an electron transport layer, an active layer, a hole transport layer and an anode layer which are stacked in sequence, wherein the electron transport layer is a surface Modified ZnO thin film of biological material; the biological material is caffeic acid C 9 H 8 O 4 , ferulic acid C 10 H 10 O 4 , 3,4-dimethoxycinnamic acid C 11 H 12 O 4 A sort of. In the present invention, after the ZnO thin film is modified by the biological material, the surface defect state of ZnO is reduced, the leakage current of the device is effectively reduced, and the recombination of carriers can be effectively suppressed; the device performance is improved, which is mainly reflected in the effective improvement of the short-circuit current density and fill factor. |