▎ 摘　　要

In this work, reduced graphene oxide (rGO)-Mn3O4 composites with different weight ratios were prepared by solvothermal method. The Mn3O4 nanoparticles were distributed on the rGO sheets in a monodispersed state and at the same time GO sheets were reduced to rGO sheets. Furthermore, rGO-Mn3O4 composites were employed as electron acceptors for hybrid polymer-based solar cells. The distribution of Mn3O4 nanoparticles on graphene sheets imposes a remarkable effect on device performance. It is demonstrated that the hybrid polymer-based solar cells based on blend of poly(1-methoxy-4-(2-ethylhexyloxy)-p-phenylene vinylene) and rGO-Mn3O4 composite with weight ration of rGO/Mn3O4 (1:1) exhibited a peak power conversion efficiency of 1.04%, which was 5-fold higher than that of the counterpart devices of MEH-PPV/rGO sheets.