Enhanced light extraction efficiency in organic light-emitting diode with randomly dispersed nanopattern

Yang Doo Kim, Kyung Hoon Han, Young Hoon Sung, Jung Bum Kim, Hak Jong Choi, Heon Lee, Jang Joo Kim

    Research output: Contribution to journalArticlepeer-review

    10 Citations (Scopus)

    Abstract

    An optical scattering layer composed of randomly dispersed nanopatterns (RDNPs) was introduced in an organic lightemitting diode (OLED) to increase the out-coupling efficiency. An RDNP was fabricated by direct printing on a glass substrate. Owing to its low haze and high transmittance, the RDNP acted as a light extraction layer in the OLED. The RDNP OLEDs showed higher current density and luminance than the reference devices at the same voltage. The current and power efficiencies of the RDNP OLED increased by 25% and 34%, respectively, without electrical degradation. Furthermore, the RDNP devices achieved an external quantum efficiency of 27.5% at 1 mA/cm2.

    Original languageEnglish
    Pages (from-to)5838-5841
    Number of pages4
    JournalOptics Letters
    Volume40
    Issue number24
    DOIs
    Publication statusPublished - 2015

    Bibliographical note

    Publisher Copyright:
    © 2015 Optical Society of America.

    ASJC Scopus subject areas

    • Atomic and Molecular Physics, and Optics

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