| 초록 |
For the replacement of the current toxic solvent processing, environmentally benign solvent processed photoactive materials are applying, especially for non-fullerene organic solar cells (NFOSCs). In this regard, we report an efficient new -conjugated polymer with non-fullerene acceptor, ITIC processed by chlorobenzene (CB) and toluene solvents. The low, medium and high molecular weight polymer device engineering of NFOSCs resulted an impressive device performance. Interestingly, medium weight based NFOSCs achieved a high power conversion efficiency (PCE) of 10.02% with CB and 10.01% with toluene, which was much higher than the low and high molecular weight based NFOSCs, well correlated with its high short-circuit current density and fill factor values attained via well-defined photoactive layer morphology. Therefore, performance of device efficiency and ambient stability with non-halogenated solvents is an effective avenue for the development of environmentally sustainable NFOSCs. |
