New Benzotrithiophene-Based Molecules as Organic P-Type Semiconductor for Small-Molecule Organic Solar Cells

Cristian Castillo, Andrés Aracena, Luis Ballesteros, Gloria Neculqueo, Loik Gence, Franck Quero

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

A new benzotrithiophene-based small molecule, namely 2,5,8-Tris[5-(2,2-dicyanovinyl)-2-thienyl]-benzo[1,2-b:3,4-b′:6,5-b″]-trithiophene (DCVT-BTT), was successfully synthesized and subsequently characterized. This compound was found to present an intense absorption band at a wavelength position of ∼544 nm and displayed potentially relevant optoelectronic properties for photovoltaic devices. Theoretical studies demonstrated an interesting behavior of charge transport as electron donor (hole-transporting) active material for heterojunction cells. A preliminary study of small-molecule organic solar cells based on DCVT-BTT (as the P-type organic semiconductor) and phenyl-C61-butyric acid methyl ester (as the N-type organic semiconductor) exhibited a power conversion efficiency of 2.04% at a donor: acceptor weight ratio of 1:1.

Original languageEnglish
Article number3759
JournalMaterials
Volume16
Issue number10
DOIs
StatePublished - May 2023

Keywords

  • benzotrithiophene derivative
  • organic semiconductors
  • organic solar cells
  • small molecule
  • π-stacked assemblies

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