Enhanced vertical extraction efficiency from a thin-film ingan-gan light-emitting diode using a 2-d photonic crystal and an omnidirectional reflector

C. H. Lin, H. H. Yen, C. F. Lai, H. W. Huang, C. H. Chao, H. C. Kuo, T. C. Lu, S. C. Wang, Kok-Ming Leung

    Research output: Contribution to journalArticle

    Abstract

    An InGaN-GaN thin-film vertical-type light-emitting diode with a two-dimensional photonic crystal (PC) on the emitting surface and a TiO 2-SiO2 omnidirectional reflector on the bottom was fabricated. The device was investigated b- performing a series of experiments and numerical computations. Electroluminescence measurement revealed a strong extraction enhancement in the vertical direction at 433-nm wavelength. The emission spectrum of the light was found to be strongl- modified b- the PC to have a significantl- narrow linewidth of 5 nm. Our experimental results were in accord with those obtained from our numerical findings.

    Original languageEnglish (US)
    Pages (from-to)836-838
    Number of pages3
    JournalIEEE Photonics Technology Letters
    Volume20
    Issue number10
    DOIs
    StatePublished - May 15 2008

    Fingerprint

    Photonic crystals
    reflectors
    Light emitting diodes
    light emitting diodes
    photonics
    Thin films
    Electroluminescence
    thin films
    Linewidth
    electroluminescence
    crystals
    emission spectra
    Wavelength
    augmentation
    wavelengths
    Experiments
    Direction compound

    Keywords

    • Light-emitting diode (LED)
    • Omnidirectional reflector(ODR)
    • Photonic crystal (PC)

    ASJC Scopus subject areas

    • Electrical and Electronic Engineering
    • Atomic and Molecular Physics, and Optics
    • Electronic, Optical and Magnetic Materials

    Cite this

    Enhanced vertical extraction efficiency from a thin-film ingan-gan light-emitting diode using a 2-d photonic crystal and an omnidirectional reflector. / Lin, C. H.; Yen, H. H.; Lai, C. F.; Huang, H. W.; Chao, C. H.; Kuo, H. C.; Lu, T. C.; Wang, S. C.; Leung, Kok-Ming.

    In: IEEE Photonics Technology Letters, Vol. 20, No. 10, 15.05.2008, p. 836-838.

    Research output: Contribution to journalArticle

    Lin, C. H. ; Yen, H. H. ; Lai, C. F. ; Huang, H. W. ; Chao, C. H. ; Kuo, H. C. ; Lu, T. C. ; Wang, S. C. ; Leung, Kok-Ming. / Enhanced vertical extraction efficiency from a thin-film ingan-gan light-emitting diode using a 2-d photonic crystal and an omnidirectional reflector. In: IEEE Photonics Technology Letters. 2008 ; Vol. 20, No. 10. pp. 836-838.
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    abstract = "An InGaN-GaN thin-film vertical-type light-emitting diode with a two-dimensional photonic crystal (PC) on the emitting surface and a TiO 2-SiO2 omnidirectional reflector on the bottom was fabricated. The device was investigated b- performing a series of experiments and numerical computations. Electroluminescence measurement revealed a strong extraction enhancement in the vertical direction at 433-nm wavelength. The emission spectrum of the light was found to be strongl- modified b- the PC to have a significantl- narrow linewidth of 5 nm. Our experimental results were in accord with those obtained from our numerical findings.",
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    AU - Lin, C. H.

    AU - Yen, H. H.

    AU - Lai, C. F.

    AU - Huang, H. W.

    AU - Chao, C. H.

    AU - Kuo, H. C.

    AU - Lu, T. C.

    AU - Wang, S. C.

    AU - Leung, Kok-Ming

    PY - 2008/5/15

    Y1 - 2008/5/15

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    AB - An InGaN-GaN thin-film vertical-type light-emitting diode with a two-dimensional photonic crystal (PC) on the emitting surface and a TiO 2-SiO2 omnidirectional reflector on the bottom was fabricated. The device was investigated b- performing a series of experiments and numerical computations. Electroluminescence measurement revealed a strong extraction enhancement in the vertical direction at 433-nm wavelength. The emission spectrum of the light was found to be strongl- modified b- the PC to have a significantl- narrow linewidth of 5 nm. Our experimental results were in accord with those obtained from our numerical findings.

    KW - Light-emitting diode (LED)

    KW - Omnidirectional reflector(ODR)

    KW - Photonic crystal (PC)

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