| 초록 |
Controlling both film crystallinity of the active layer for better charge transport and the interdiffusion between donor and acceptor materials for optimal bicontinuous networks is essential in producing pseudo-bilayer polymer solar cells. In this work, we investigated the influence of a doping 5,11-bis(triethylsilylethynyl) anthradithiophene(TES-ADT), on the performance of pseudo-bilayer polymer solar cells made of an underlayer of poly(3-hexylthiophene)(P3HT) and an upper layer of [6,6]-phenyl-C61-butyric acid methyl ester (PCBM). Power conversion efficiency was enhanced by 8% while short-circuit current density was enhanced by 14%. Increased crystallinity and occurrence of interdiffusion between P3HT:TES-ADT and PCBM was confirmed by XRD, UV−vis absorbance spectra and SEM. A new method for improving the performance of pseudo-bilayer polymer solar cells has thus been successfully demonstrated. |
