Fine control of photoluminescence and optical waveguiding characteristics of organic rubrene nanorods using focused electron-beam irradiation

Hyeon Jung Park, Min Su Kim, Jeongyong Kim, Jinsoo Joo

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

We demonstrate the fine control of the nanoscale photoluminescence (PL) and optical waveguiding characteristics of light-emitting organic rubrene nanorods (NRs) through focused electron-beam (E-beam) irradiation. Nanoscale laser confocal microscope PL intensity and spectra of the focused E-beam-treated compartments of the rubrene NR drastically varied with E-beam dose, and yellow-white light emission from those compartments with a specific E-beam dose was observed. In optical waveguiding experiments, the propagation characteristics of optical signals along the single NR were dependent on the crystalline structure of the rubrene. For the E-beam treated NR, the waveguiding PL signals along the crystalline a-axis had relatively higher output, indicating the major axis for the optical energy transfer. Additionally, the waveguiding characteristics such as decay constant along the crystalline b-axis and c-axis of the NR considerably varied at the boundary of the E-beam treatment.

Original languageEnglish
Pages (from-to)30179-30186
Number of pages8
JournalJournal of Physical Chemistry C
Volume118
Issue number51
DOIs
Publication statusPublished - 2014 Jan 1

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Electronic, Optical and Magnetic Materials
  • Surfaces, Coatings and Films
  • Energy(all)

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