[12p-N202-1~13] 3.12 Nanoscale optical science and near-field optics

[12p-N202-10] Emission enhancement of ZnO thin films by UV plasmonics using Ag, Al and Ga

〇Soshi Endo¹, Yuya Nakatsuka¹, Tetsuya Matsuyama¹, Kenji Wada¹, Koichi Okamoto¹ (1.Osaka Pref. Univ.)

Keywords:Surface plasmon, semiconductor, ZnO

In recent years, research has been actively conducted to improve the efficiency of ultraviolet LEDs, which have a wide range of applications such as sterilization and skin treatment. In this study, we focused on ZnO, which has a high exciton binding energy among semiconductors with a band gap in the ultraviolet region, and is a promising material for LEDs. Specifically, we attempted to enhance the UV emission by surfece plasmon(SP) resonance using metal thin films. We also theoretically discussed the enhancement effect by calculating the SP dispersion curves for Ag, Al and Ga.