Synthesis of Two-Dimensional Terbenzodithiophene-based Derivative by Palladium-catalyzed C─H Benzannulation and Its Donor–Acceptor Copolymers for Organic Photovoltaics

Fong Yi Cao, Yung Lung Chen, Yu Ying Lai, Yen-Ju Cheng*

*Corresponding author for this work

Research output: Contribution to journalArticle

Abstract

A new two-dimensional tetrathienyl-TBDT (TBDT-4T) was synthesized by employing palladium-catalyzed C─H benzannulation between an iodobiaryl and 1,2-dithienylacetylene. The stannylated TBDT-4T was copolymerized with di(thiophenyl)difluorobenzothiadiazole (FBT) and fluorothienothiophene (FTT) monomers to yield PTBDT-FBT and PTBDT-FTT, which showed high decomposition temperatures (421 and 408°C) and deep-lying HOMO levels (−5.80 and −5.84 eV). The inverted solar cell device using PTBDT-FBT:PC71BM (1:1 in wt%) blend showed a power conversion efficiency (PCE) of 4.16%, while the device using PTBDT-FTT:PC71BM (1:2 in wt%) blend showed a PCE of 3.98%.

Original languageEnglish
Pages (from-to)133-140
Number of pages8
JournalJournal of the Chinese Chemical Society
Volume65
Issue number1
DOIs
StatePublished - 1 Jan 2018

Keywords

  • Ladder-type polymer
  • Palladium-catalyzed C─H arylation
  • Polymer solar cell
  • Two-dimensional structure

Fingerprint Dive into the research topics of 'Synthesis of Two-Dimensional Terbenzodithiophene-based Derivative by Palladium-catalyzed C─H Benzannulation and Its Donor–Acceptor Copolymers for Organic Photovoltaics'. Together they form a unique fingerprint.

Cite this