Influences of the non-covalent interaction strength on reaching high solid-state order and device performance of a low bandgap polymer with axisymmetrical structural units

Jyun Fong Jheng, Yu Ying Lai, Jhong Sian Wu, Yi Hsiang Chao, Chien-Lung Wang*, Chain-Shu Hsu

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

121 Scopus citations

Abstract

A high organic field-effect transistor mobility (0.29 cm2V -1s-1) and bulk-heterojunction polymer solar cell performance (PCE of 6.82%) have been achieved in a low bandgap alternating copolymer consisting of axisymmetrical structural units, 5,6-difluorobenzo-2,1, 3-thiadiazole. Introducing the fluorine substituents enhanced intermolecular interaction and improved the solid-state order, which consequently resulted in the highest device performances among the 2,1,3-thiadiazole-quarterthiophene based alternating copolymers.

Original languageEnglish
Pages (from-to)2445-2451
Number of pages7
JournalAdvanced Materials
Volume25
Issue number17
DOIs
StatePublished - 7 May 2013

Keywords

  • bulk-heterojunction organic photovoltaics
  • conjugated polymers
  • organic electronics
  • polymer field-effect transistors
  • self-assembly

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