摘要： Morphological and photovoltaic stabilities of poly(3-hexylthiophene) (P3HT):phenyl-C61-butyric acid methyl ester (PC71BM) solar cells were investigated in pristine and modified states. To this end, the four types of patterned/assembled nanostructures, such as reduced graphene oxide (rGO)-g-poly(3-dodecylthiophene) (PDDT)/P3HT patched-like pattern, rGO-polythiophene (GPTh)/P3HT/PC71BM nanofiber, rGO-g-P3HT/P3HT cake-like pattern and supra(polyaniline (PANI)-g-rGO/P3HT) were designed on the basis of rGO and different conjugated polymers. Intermediately covered rGO nanosheets by the P3HT crystals (supra(PANI-g-rGO/P3HT)) acted better than rarely (patched-like pattern) and fully (cake-like pattern) covered ones in P3HT:PC71BM solar systems. Supra(PANI-g-rGO/P3HT) nano-hybrids largely phase separated in active layers (root mean square = 0.88 nm) and also reflected the highest performance (PCE = 5.74%). The photovoltaic characteristics demonstrated the plummeting trends during the air aging for all sorts of devices, but with distinct slopes. The steepest decreasing plots were obtained for the unmodified P3HT:PC71BM devices (from 1.77 to 0.28%). The two last supramolecules with the most ordered structures, i.e., cake-like pattern (10.12 mA/cm2, 51%, 0.58 V, 2.2 × 10–6 cm2/V.s, 4.3 × 10–5 cm2/V.s, 0.69 nm and 2.99%) and supra(PANI-g-rGO/P3HT) (12.51 mA/cm2, 57%, 0.63 V, 1.2 × 10–5 cm2/V.s, 3.4 × 10–4 cm2/V.s, 0.82 nm and 4.49%), highly retained the morphological and photovoltaic stabilities in P3HT:PC71BM devices after 1 month air aging. According to the morphological, optical, photovoltaic and electrochemical results, the supra(PANI-g-rGO/P3HT) nano-hybrids were the best candidates for stabilizing the P3HT:PC71BM solar cells.