| abstract |
The invention discloses a hole transport material with benzodithiophenedione as the core structure, the two ends are directly connected with 4,4-dimethoxytriphenylamine, or the benzodithiophenedione is used as the core structure. Different aromatic derivatives are used as bridging groups, and then connected with 4,4-dimethoxytriphenylamine end groups to construct a new type of hole transport material with symmetrical structure. Such materials have the advantages of simple synthesis, tunable energy levels, high hole mobility and electrical conductivity, good thermal and chemical stability, etc. Their application in perovskite solar cells will help to improve their photoelectric conversion efficiency. , Enhance device stability and reduce device fabrication cost. |