2,1,3-benzothiadiazole-5,6-dicarboxylic imide - A versatile building block for additive- and annealing-free processing of organic solar cells with effi ciencies exceeding 8%

Christian Bergenstof Nielsen, Raja Shahid Ashraf, Neil D. Treat, Bob C. Schroeder, Jenny E. Donaghey, Andrew J P White, Natalie Stingelin, Iain McCulloch

Research output: Contribution to journalArticlepeer-review

69 Scopus citations

Abstract

A new photoactive polymer comprising benzo[1,2-b:3,4-b′:5,6-d′]trithiophene and 2,1,3-benzothiadiazole-5,6-dicarboxylic imide is reported. The synthetic design allows for alkyl chains to be introduced on both electron-rich and electron-deficient components, which in turn allows for rapid optimization of the alkyl chain substitution pattern. Consequently, the optimized polymer shows a maximum efficiency of 8.3% in organic photovoltaic devices processed in commercially viable fashion without solvent additives, annealing, or device engineering.
Original languageEnglish (US)
Pages (from-to)948-953
Number of pages6
JournalAdvanced Materials
Volume27
Issue number5
DOIs
StatePublished - Dec 15 2014

ASJC Scopus subject areas

  • Mechanics of Materials
  • Materials Science(all)
  • Mechanical Engineering

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