Directional photoluminescence enhancement of organic emitters via surface plasmon coupling

Shou Yu Nien, Nan Fu Chiu, Yu Hsuan Ho, Jiun Haw Lee, Chii Wann Lin, Kuang Chong Wu, Chih Kung Lee, Jia Rong Lin, Mao Kuo Wei, Tien Lung Chiu

    Research output: Contribution to journalArticlepeer-review

    27 Citations (Scopus)

    Abstract

    In this paper, we had quantitatively investigated the photoluminescence of organic emitter on a Si substrate with periodically corrugated metal thin film experimentally and theoretically. Due to the plasmonic coupling by the metal gratings, 4.3 times and 1.7 times enhancements in optical intensities were observed at specified and full viewing angles at certain wavelengths, respectively. Good agreement of angular-frequency versus in-plane wavevector (ω-k) curves between experiments and calculations were obtained when varying organic materials, metal materials, and grating pitches. Two different metal materials were used, which show slight shift in ω-k curves due to the high sensitivity of the surface plasmon to the relative permittivity.

    Original languageEnglish
    Article number103304
    JournalApplied Physics Letters
    Volume94
    Issue number10
    DOIs
    Publication statusPublished - 2009 Mar 24

    ASJC Scopus subject areas

    • Physics and Astronomy (miscellaneous)

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