High output power density from GaN-based two-dimensional nanorod light-emitting diode arrays

Ya Ju Lee, Shawn Yu Lin, Ching Hua Chiu, Tien Chang Lu, Hao Chung Kuo, Shing Chung Wang, Sameer Chhajed, Jong Kyu Kim, E. Fred Schubert

    Research output: Contribution to journalArticlepeer-review

    43 Citations (Scopus)

    Abstract

    Here we propose and realize a scheme for making a direct contact to a two-dimensional nanorod light-emitting diode (LED) array using the oblique-angle deposition approach. And, more importantly, we demonstrate highly efficient electrical carrier injection into the nanorods. As a result, we show that at a 20 mA dc current injection, the light output power density of our nanorod LED array is 3700 mW cm-2. More general, this contact scheme will pave the ways for making direct contacts to other kinds of nanoscale optoelectronic devices.

    Original languageEnglish
    Article number141111
    JournalApplied Physics Letters
    Volume94
    Issue number14
    DOIs
    Publication statusPublished - 2009

    ASJC Scopus subject areas

    • Physics and Astronomy (miscellaneous)

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