A readily-accessible, random perylene diimide copolymer acceptor for all-polymer solar cells

Ping Deng, Bo Wu, Yanlian Lei, Dagang Zhou, Carr Hoi Yi Ho, Fu Rong ZHU, Beng ONG*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)

Abstract

A new, structurally random perylene diimide (PDI) copolymer acceptor, PPDI, has been readily synthesized from Stille cross-coupling polycondensation of two pairs of regioisomeric dibromo-PDIs with 2,5-bis(trimethylstannyl)thiophene. PPDI possesses a complex structural configuration with a greatly twisted conformation, and thus exhibits weak intermolecular interactions. A solution of PPDI and a polymer donor such as PBT7-Th affords a smooth homogenous film without large crystalline domain formation. This composite film absorbs strongly throughout the visible spectrum, and when used as an active layer in all-polymer solar cells, provides a power conversion efficiency of over 5%.

Original languageEnglish
Pages (from-to)20-26
Number of pages7
JournalDyes and Pigments
Volume146
DOIs
Publication statusPublished - Nov 2017

Scopus Subject Areas

  • Chemical Engineering(all)
  • Process Chemistry and Technology

User-Defined Keywords

  • All-polymer solar cells
  • Copolymer acceptor
  • Perylene diimide
  • Random copolymer
  • Readily-accessible
  • Regioisomeric

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