Light-emitting rubrene nanowire arrays: A comparison with rubrene single crystals

Jin Woo Lee, Kihyun Kim, Dong Hyuk Park, Mi Yeon Cho, Yong Baek Lee, Jin Sun Jung, Dae Chul Kim, Jeongyong Kim, Jinsoo Joo

    Research output: Contribution to journalArticlepeer-review

    39 Citations (Scopus)

    Abstract

    This is a report on a new method of growth of a light-emitting rubrene nanowires array with diameters of 200 ± 10 nm by using organic vapor transport through Al2O3 nanoporous templates. Nanometer-scale laser confocal microscope (LCM) photoluminescence (PL) spectra and crystalline structures of the rubrene nanowires are compared with those of rubrene single crystals prepared with the same experimental conditions without the template. In the LCM PL spectra it is observed that the PL spectra and intensity varies with the detecting positions because of the crystal growth characteristics of the rubrene molecules. A single rubrene nanowire has a wider LCM PL band width than that of the rubrene single crystal. This may originate from the light emissions of the mixed polarized bands due to additional new crystallinity in the formation of the nanowires. From the current-voltage characteristic curves, the semiconducting nature of both the rubrene nanowires and single crystals is observed.

    Original languageEnglish
    Pages (from-to)704-710
    Number of pages7
    JournalAdvanced Functional Materials
    Volume19
    Issue number5
    DOIs
    Publication statusPublished - 2009 Mar 10

    ASJC Scopus subject areas

    • General Chemistry
    • General Materials Science
    • Condensed Matter Physics

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