The Photo-Hall Effect in High-Mobility Organic Semiconductors

Vladimir Bruevich, Hyun Ho Choi, Vitaly Podzorov

Research output: Contribution to journalArticlepeer-review

10 Scopus citations

Abstract

High-mobility crystalline organic semiconductors are important for applications in advanced organic electronics and photonics. Photogeneration and transport of mobile photocarriers in these materials, although very important, remain underexplored. The photo-Hall effect can be used to address the fundamental charge transport properties of these functional molecular materials, without the need for fabricating complex transistor devices or chemical doping. Here, a photo-Hall effect is demonstrated in organic semiconductors, using a benchmark molecular system rubrene as an experimental platform. It is shown that this technique can be used to directly measure the charge carrier mobility and photocarrier density, decouple the surface and bulk transport phenomena, and thus significantly deepen the understanding of the mechanism of photoconductivity in these high-performance molecular materials.

Original languageEnglish (US)
Article number2006178
JournalAdvanced Functional Materials
Volume31
Issue number7
DOIs
StatePublished - Feb 10 2021

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

Keywords

  • exciton
  • Hall effect
  • mobility
  • organic field-effect transistors
  • organic semiconductors
  • photo-Hall effect
  • photoconductivity

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