Micro-photoluminescence mapping of surface plasmon enhanced light emissions from InGaN/GaN quantum wells

Kazutaka Tateishi, Pangpang Wang, Sou Ryuzaki, Mitsuru Funato, Yoichi Kawakami, Koichi Okamoto, Kaoru Tamada

研究成果: Article査読

10 被引用数 (Scopus)

抄録

We conducted photoluminescence (PL) mapping to elucidate the detailed mechanism of PL enhancement based on the energy transfer from excitons to surface plasmon polaritons (SPPs) in silver-coated InGaN quantum wells (QWs). The PL mapping for bare InGaN QWs showed positive or negative correlations between the PL peak intensity and wavelength. These correlations are normally caused by exciton localization and the quantum confined Stark effect, respectively; however, they did not appear in the silver-coated region of the InGaN QWs, and the wavelength distribution shifted into shorter wavelengths due to the SP-induced PL enhancement. These results suggest that the energy transfer from the excitons to the SPPs should be much faster than that in the exciton localization and charge screening processes of the piezoelectric field in QWs.

本文言語English
論文番号172105
ジャーナルApplied Physics Letters
111
17
DOI
出版ステータスPublished - 2017 10月 23
外部発表はい

ASJC Scopus subject areas

  • 物理学および天文学(その他)

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