p–π Conjugated Polymers Based on Stable Triarylborane with n-Type Behavior in Optoelectronic Devices

Bin Meng, Yi Ren, Jun Liu, Frieder Jäkle, Lixiang Wang

Research output: Contribution to journalArticle

45 Scopus citations

Abstract

p–π conjugation with embedded heteroatoms offers unique opportunities to tune the electronic structure of conjugated polymers. An approach is presented to form highly electron-deficient p–π conjugated polymers based on triarylboranes, demonstrate their n-type behavior, and explore device applications. By combining alternating [2,4,6-tris(trifluoromethyl)phenyl]di(thien-2-yl)borane (FBDT) and electron-deficient isoindigo (IID)/pyridine-flanked diketopyrrolopyrrole (DPPPy) units, we achieve low-lying lowest unoccupied molecular orbital (LUMO) and highest occupied molecular orbital (HOMO) energy levels, high electron mobilities, and broad absorptions in the visible region. All-polymer solar cells with these polymers as electron acceptors exhibit encouraging photovoltaic performance with power conversion efficiencies of up to 2.83 %. These results unambiguously prove the n-type behavior and demonstrate the photovoltaic applications of p–π conjugated polymers based on triarylborane.

Original languageEnglish (US)
Pages (from-to)2183-2187
Number of pages5
JournalAngewandte Chemie - International Edition
Volume57
Issue number8
DOIs
StatePublished - Feb 19 2018

All Science Journal Classification (ASJC) codes

  • Catalysis
  • Chemistry(all)

Keywords

  • all-polymer solar cells
  • boron
  • electron transport
  • p–π conjugation
  • triarylboranes

Fingerprint Dive into the research topics of 'p–π Conjugated Polymers Based on Stable Triarylborane with n-Type Behavior in Optoelectronic Devices'. Together they form a unique fingerprint.

  • Cite this