▎ 摘　　要

In this study, the highly efficient organic indoline DN350 based dye sensitized solar cells (DSSCs) have been fabricated using reduced graphene oxide (rGO)-TiO2 composite nanofibers (NFs) and tested its photovoltaic properties. The influence of the rGO on the morphology, structural properties of the TiO2 NFs have been characterized by various techniques. Our photovoltaic results revealed that the modified rGO-TiO2 composite NFs exhibited higher power conversion efficiency (PCE) in comparison with the pristine-TiO2 NFs. The electrochemical analysis indicated that the GO content provides more active sites results in higher dye adsorption which consequently improves the DSSCs performance. Our optimized sample containing 4 mg-rGO-TiO2 NFs exhibited the best performance with 4.43% PCE, which is higher than the pristine-TiO2 NFs (3.83%). Overall, this study presents the rGO-TiO2 composite NFs as a novel strategy for enhancing the efficiency of the organic indoline DN350 based DSSCs.