Synthesis and characterization of a narrow-bandgap polymer containing alternating cyclopentadithiophene and diketo-pyrrolo-pyrrole units for solar cell applications

Guan Yu Chen, Chien Ming Chiang, Dhananjay Kekuda, Shang Che Lan, Chih Wei Chu, Kung Hwa Wei

Research output: Contribution to journalArticle

65 Citations (Scopus)

Abstract

We have synthesized a narrow-bandgap conjugated polymer (PCTDPP) containing alternating cyclopentadithiophene (CT) and diketo-pyrrolo-pyrrole (DPP) units by Suzuki coupling. This PCTDPP exhibits a low band gap of 1.31 eV and a broad absorption band from 350 to 1000 nm, which allows it to absorb more available photons from sunlight. A bulk heterojunction polymer solar cell incorporating PCTDPP and C70 at a blend ratio of 1:3 exhibited a high short-circuit current of 10.87 mA/cm2 and a power conversion efficiency of 2.27%.

Original languageEnglish
Pages (from-to)1669-1675
Number of pages7
JournalJournal of Polymer Science, Part A: Polymer Chemistry
Volume48
Issue number7
DOIs
Publication statusPublished - 01-04-2010

All Science Journal Classification (ASJC) codes

  • Polymers and Plastics
  • Organic Chemistry
  • Materials Chemistry

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