| 초록 |
In this study, we synthesized and investigated the correlation between crystallinity and miscibility of donor polymers (P(Cl), P(Cl)(F=0.5), and P(F-Cl)) and NFAs (ITIC-Th, IDIC, and IT-4F) for an eased optimization of photoactive materials blends. We analyze each pristine material to find the optimized combination between two components. Finally, we reached the best power-conversion efficiencies (PCEs) of 12.1% (Certified PCEs: 12.48%) and 11.8% for P(Cl)(F=0.5):IDIC and P(F-Cl):IT-4F, respectively. We found the influence between crystallinity and miscibility of their air stability by measuring the shelf protocol (ISOS-D-1) comparing of without and with encapsulation; the PCEs for P(Cl)(F=0.5):IDIC and P(F-Cl):IT-4F were dramatically diminished with 24.1% and 43.5% of the initial values for up to 350 h and 398 h, respectively. Whereas, P(Cl):ITIC-Th is superior long-term stability with -2% (for 317 h) and even 9% (for 2002 h) compared to initial PCEs. |
