| 초록 |
Polymer solar cells (PSCs) have received great attention due to their various advantages such as light weight and flexibility. D-A copolymers which consist of electron donor (D) and acceptor (A) units have widely developed for high performance PSCs. However, only a limited number of D-A combinations showed high performance and they exhibited poor solubility in non-halogenated solvents. Recently, 1D/2A random terpolymers composed of one electron donor and two electron acceptor units have emerged as promising p-type polymer because of their merit to easily control their morphological properties by adjusting composition of two different acceptor units. Here, we synthesized 1D/2A random terpolymers with different ratio of benzo[1,2-b:4,5-b‘] dithiophene-4,8-dione and 5,6-difluoro-benzo[c][1,2,5]thiadiazole. It displayed homogenous film with favorable face on orientation. As a result, the inverted PSCs based on PBDTBD50/IT-4F processed with non-halogenated solvents showed a PCE of 10.03%. |
