| 초록 |
Polymer solar cells(PSCs) have attentions from industry and academic community for next generation photovoltaic, because of their advantages of low cost, light-weightiness, and flexibility. Major challenges to further progress in developing highly efficient all-polymer solar cells is that besides having a suitable offset in the frontier molecular orbital energy levels of the polymer/polymer pair, the other key factors that govern compatibility and blend morphology of the blend pair toward achieving efficient bulk heterojunction solar cells are not known. We report the synthesis, crystal structures, photo physics, and electrochemical properties of the naphthalene diimide(NDI) and perylene diimide(PDI). The initial use of the materials as acceptors in bulk heterojunction solar cells in combination with a model donor polymer is also reported. The results are discussed in the ambience of the identified criteria for the design of acceptor materials toward efficient non fullerene PSCs. |
