Electrically controlled photoluminescence efficiency of organic rubrene microplates

Cheol Joon Park, Min Su Kim, Jeongyong Kim, Jinsoo Joo

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

Semiconducting organic rubrene (5,6,11,12-tetraphenyltetracene) microplates (MPs) were fabricated using physical vapor transport to study tunable photoluminescence (PL) characteristics through an applied electric field. The nanoscale PL intensities of a rubrene MP, which were measured via high-resolution laser confocal microscopy (LCM), clearly depended on the applied electric field intensity. The LCM PL intensity of the rubrene MP sinusoidally varied with the periodic change of the electric field. We also observed the aging effect on the LCM PL intensity of rubrene MPs. Control of the charge dissociation rate of photoinduced excitons by the external electric field can be the cause of the tunable PL efficiency of the MP.

Original languageEnglish
Pages (from-to)394-399
Number of pages6
JournalSynthetic Metals
Volume199
DOIs
Publication statusPublished - 2015 Jan

Keywords

  • Charge dissociation
  • Electric field
  • Microplate
  • Photoluminescence
  • Rubrene

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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