Surface-plasmon-enhanced visible-light emission of ZnO/Ag grating structures

Minji Gwon, Eunsongyi Lee, Dong Wook Kim, Ki Ju Yee, Min Jung Lee, Youn Sang Kim

Research output: Contribution to journalArticlepeer-review

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We investigated the optical properties of ZnO/Ag grating structures fabricated by sputtering and nanoimprint lithography. The grating structures exhibited multiple peak features in broad visible-range photoluminescence (PL) spectra. The PL intensity of the grating was larger than that of a planar thin film by up to two orders of magnitude. The surface plasmon (SP) dispersion relation suggested excitation of SPs with various energies of the grating, explaining the broad PL emission. The spectral dependence of the PL intensity was also well supported by the experimental reflectance spectra and the simulated electric field distribution at the ZnO/Ag interface.

Original languageEnglish
Pages (from-to)5895-5901
Number of pages7
JournalOptics Express
Issue number7
StatePublished - 28 Mar 2011


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