Porphyrin-incorporated low band gap conjugated polymers for polymer solar cell application

• 作 者: Chain-Shu Hsu
• 机 构: DepartmentofAppliedChemistry,NationalChiao-TungUniversity,HsinshuCity,Taiwan
• 出 处: 2014 年两岸三地高分子液晶态与超分子有序结构学术研讨会暨第十三届全国高分子液晶态与超分子有序结构学术论文报告会
• 发表日期: 2014年8期

Novel D-A copolymers were developed by utilizing pyrene-modified porphyrin as complementary light-harvesting unit (LHU).It was found that adding proper amount of the LHU increased light absorption in the 400-500 nm region,rendering the porphyrin-incorporated D-A copolymers (PPor)panchromatic light absorbers.Voc-Jse trade-offs commonly seen in many D-A polymers were not found in the PPors reported in this work.This is attributed to the presence of the LHUs increasing the Jsc without sacrificing the Voc and FF of the polymer solar cells (PSCs).Thus,8.0 ％PCE was observed for the PPor-2:PC71BM single-junction PSCs.Significantly,8.6 ％PCE was achieved when a C-PCBSD cathodic interlayer was introduced to suppress linkage current.