| 초록 |
Recently solution-processable conjugated small molecules for organic photovoltaics (OPV) have made great improvement in power conversion efficiencies (PCE) near 10% for single-junction solar cells, which are comprarable to the performance of polymeric OPVs. In view of the advantages of small molecules, including well-defined but versatile chemical structures, allowing easier energy level control, mobility tuning, and no batch-to-batch variations, they are good candidates not only for understanding the relationships between molecular structure and device performance but also achieving higher OPV performance. Here we discuss synthesis and OPV performance of a series of conjugated small molecules containing diketopyrrolopyrrole and benzotriazole moieties. |
