▎ 摘　　要

Crystallization of poly[bis(triiso-propylsilylethynyl) benzodithiophene-bis(decyltetradecyl-thien) naphthobisthiadiazole] (PBDT-TIPS-DTNT-DT) was investigated in supramolecules based on carbon nanotubes (CNTs) and reduced graphene oxide (rGO) and their grafted derivatives. The principal peaks of PBDT-TIPS-DTNT-DT crystals were in the range 3.50 degrees-3.75 degrees. By grafting the surface of the carbonic materials, the assembling of polymer chains decreased because of hindrance of poly(3-dodecylthiophene) (PDDT) grafts against pi-stacking. The diameters of CNT/polymer and CNT-g-PDDT/polymer supramolecules were 160 and 100 nm. The rGO/polymer supramolecules had the highest melting point (T-m = 282 degrees C) and fusion enthalpy (Delta H-m = 25.98 J g(-1)), reflecting the largest crystallites and the most ordered constituents. Nano-hybrids based on grafted rGO (276 degrees C and 28.26 J g(-1)), CNT (275 degrees C and 27.32 J g(-1)) and grafted CNT (268 degrees C and 22.17 J g(-1)) were also analyzed. T-m and Delta H-m values were significantly less in corresponding melt-grown systems. The nanostructures were incorporated in active layers of PBDT-TIPS-DTNT-DT:phenyl-C-71-butyric acid methyl ester (PC71BM) solar cells to improve the photovoltaic features. The best results were detected for PBDT-TIPS-DTNT-DT:PC71BM:rGO/polymer systems having J(sc) = 13.11 mA cm(-2), fill factor 60% and V-oc = 0.71 V with an efficacy of 5.58%. On grafting the rGO and CNT, efficiency reductions were 12.01% (5.58%-4.91%) and 9.34% (4.07%-3.69%), respectively. (c) 2019 Society of Chemical Industry