| 제목 |
Synthesis and characterization of low band gap polymers based on 3,6-bis(5-bromothien-2-yl)- 2,5-bis(2-ethylhexyl)pyrrolo[3,4-c] pyrrole-1,4(2H,5H)-dione and 4,7-dithiophen- 2,1,3-benzo thiadiazole as acceptor in polymer photovoltaic cells |
| 초록 |
Polymer solar cells (PSCs) are one of promising technology due to their versatile advantages of easy process and potential application in many field. Diketopyrrolopyrrole (DPP) or Benzo[1,2,5]thiadiazole (BT) as acceptor unit are known as a promising material in organic electronic devices because polymers based on DPP or BT have good hole mobility and narrow band gab. And poly(2,7-carbazole) derivatives with low-lying HOMO energy level and phenanthrene derivatives with planar structure are used as electron donor. Herein, we synthesis polymers with donor–acceptor (D–A) concept based on alkly-9H-carbazol (CD) or alkly-9,10-phenanthren (PN) with 2,5-Dioctyl-3,6-di-thiophen-2-yl-2,5-dihydro-pyrrolo[3,4-c]pyrrole-1,4-dione (DPP) or 4,7-Di-thiophen-2-yl-benzo[1,2,5]thiadiazole (TBT) by Suzuki coupling. In this presentation, we will report the synthesis, optical properties and photovoltaic properties of the polymers. |
