Electrochemical studies on triarylamines featuring an azobenzene substituent and new application for small-molecule organic photovoltaics

Kuo Yuan Chiu, Thai Thi Ha Tran, Chun Guey Wu, Sheng Hsiung Chang, Te Fang Yang, Yuhlong Oliver Su

Research output: Contribution to journalArticlepeer-review

21 Scopus citations

Abstract

Three N,N′-diaryl-4-amino-azobenzene derivatives containing donor (D) and acceptor (A) moieties have been synthesized for light harvesting. Their optical and electronic characteristics have been analyzed to determine the optical band gap between highest occupied molecular orbital (HOMO) and lowest occupied molecular orbital (LUMO). The electrochemical properties and electrochemical redox potential of the triarylamines exhibited linear relationship with respect to the Hammett equation. The stability of the oxidation products and spectral changes with different applied potentials were monitored with UV–vis spectroelectrochemical investigations and DFT calculations. A solution-processed organic photovoltaic cell employing N,N′-ditolyl-4-aminoazobenzene (DTAA) mixed with PC60BM produced a power conversion efficiency (PCE) of 0.28% under 1 sun illumination.

Original languageEnglish
Pages (from-to)118-124
Number of pages7
JournalJournal of Electroanalytical Chemistry
Volume787
DOIs
StatePublished - 15 Feb 2017

Keywords

  • Azobenzene
  • Electrochemistry
  • Photovoltaic
  • Spectroelectrochemistry
  • Triarylamine

Fingerprint

Dive into the research topics of 'Electrochemical studies on triarylamines featuring an azobenzene substituent and new application for small-molecule organic photovoltaics'. Together they form a unique fingerprint.

Cite this