Grain size dependence of surface plasmon enhanced photoluminescence

Xiaoying Xu, Mitsuru Funato, Yoichi Kawakami, Koichi Okamoto, Kaoru Tamada

Research output: Contribution to journalArticlepeer-review

22 Citations (Scopus)


Photoluminescence (PL) in the InGaN quantum well based lightemitting diodes (LED) is greatly mediated through the coupling with the Surface Plasmons (SPs) at the interface of the sputtered Ag film. SPs coupled PL is independently tuned through controlling the grain size of the sputtered Ag films. The grain size of ∼50 nm exhibits the maximum light extraction efficiency (LEE) at the wavelength of 460 nm. This grain size agrees with the periodic lattice constant of the grating structure in the calculation, where the momentum mismatch between the SPs and the radiative light can be compensated.

Original languageEnglish
Pages (from-to)3145-3151
Number of pages7
JournalOptics Express
Issue number3
Publication statusPublished - Feb 11 2013

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics


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