Measuring the impact of spin-triplet exciton orientation on photocurrent in an organic transistor

Emily G. Bittle, Sebastian Engmann, Karl Thorley, John Anthony

Research output: Contribution to journalArticlepeer-review

5 Scopus citations


The dynamics of triplet and singlet exciton populations in organic semiconductors offer interesting possibilities in improving optical device efficiency, while also attracting interest for future applications as manipulable states for quantum-state based computing. For technological applications, transduction of the exciton state is essential, thus detailed information on how the exciton dynamics affect device outputs is required. In this study, we measure the magnetic field response of the photocurrent in organic transistors to investigate the electrical signal resulting from singlet-triplet exciton dynamics. We find that controlling the orientation of the magnetic dipole orientation of the triplet by varying both the magnitude and orientation of the magnetic field with respect to single crystal axes inanti-2,8-difluoro-5,11-bis(triethylsilylethynyl)anthradithiophene (adiF TES ADT) allows us to manipulate the amount of current detected as a result of singlet fission.

Original languageEnglish
Pages (from-to)11809-11814
Number of pages6
JournalJournal of Materials Chemistry C
Issue number35
StatePublished - Sep 21 2021

Bibliographical note

Publisher Copyright:
© The Royal Society of Chemistry 2021.

ASJC Scopus subject areas

  • General Chemistry
  • Materials Chemistry


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