| 초록 |
To make high efficiency organic solar cells (OSCs), one of the commonly used strategies for designing donor-acceptor (D-A) polymers is to incorporate two or more types of monomers in a single backbone. So, the optoelectronic properties of the copolymers can be tuned by changing each monomer. However, the introduction of multi-type of monomers, the complexity of D-A polymer structures is raised. This has led to the variability of polymers, including characteristics such as molecular weight, polydispersity index (PDI) and purity. So, regioregularity of polymer is a crucial factor in determining the polymer’s properties and device performance. Therefore, we synthesized regioregular D-A polymers. The favorable repeat unit is capable of enhancing the intermolecular interaction, leading to highly packing order and pure domain in the blend film, consequently improving the morphology of BHJs, and then achieving high power conversion efficiency. |
