ハイパボリック・メタマテリアルによる有機半導体薄膜の蛍光増強

カテゴリ: 論文誌(論文単位)

グループ名: 【E】センサ・マイクロマシン部門

発行日: 2015/11/01

タイトル(英語): Enhanced Photoluminescence of Organic Semiconductor Thin Film on Hyperbolic Metamaterials

著者名: 松井　龍之介（三重大学 大学院工学研究科 電気電子工学専攻／三重大学 極限ナノエレクトロニクスセンター），宇佐美　英典（三重大学 大学院工学研究科 電気電子工学専攻）

著者名(英語): Tatsunosuke Matsui (Department of Electrical and Electronic Engineering, Graduate School of Engineering, Mie University/the Center of Ultimate Technology on nano-Electronics (MIE-CUTE), Mie University), Hidenori Usami (Department of Electrical and Electronic Engineering, Graduate School of Engineering, Mie University)

キーワード: メタマテリアル，ハイパボリック・メタマテリアル，有機半導体，発光増強　　metamaterial，hyperbolic metamaterial，organic semiconductor，enhanced luminescence

要約(英語): We have experimentally investigated photoluminescence from thin film of organic semiconductor deposited on hyperbolic metamaterials (HMMs). The HMMs composed of alternating multilayer of subwavelength-thick silver and titanium dioxide with various fill fractions were fabricated utilizing magnetron sputtering. Their optical properties were evaluated from transmittance and reflectance spectra and also compared with theoretical effective dielectric characteristics obtained by effective medium theory. Thin film of organic semiconductor, Tris-(8-hydroxyquinoline)aluminum, Alq3, was deposited by thermal evaporation on the fabricated HMMs. The samples were excited using ultraviolet light emitting diode (UV-LED) and photoluminescence (PL) spectra were measured using multichannel spectrometer. A 2.6-fold enhancement of PL was achieved from Alq3 on the optimized HMM using as a substrate. Our findings may be utilized to develop various types of efficient optical devices based on organic semiconductors such as organic light emitting diodes (OLEDs) and organic solid state lasers.

本誌: 電気学会論文誌E（センサ・マイクロマシン部門誌） Vol.135 No.11 （2015） 特集：メタマテリアル・プラズモニクス

本誌掲載ページ: 408-413 p

原稿種別: 論文／日本語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejsmas/135/11/135_408/_article/-char/ja/