このアイテムのアクセス数: 36

このアイテムのファイル:
ファイル 記述 サイズフォーマット 
1.5050993.pdf3.24 MBAdobe PDF見る/開く
タイトル: Enhanced photoluminescence and directional white-light generation by plasmonic array
著者: Kamakura, Ryosuke
Murai, Shunsuke
Yokobayashi, Yusuke
Takashima, Keijiro
Kuramoto, Masaru
Fujita, Koji
Tanaka, Katsuhisa
著者名の別形: 鎌倉, 涼介
村井, 俊介
横林, 裕介
高島, 啓次郎
倉本, 大
藤田, 晃司
田中, 勝久
発行日: 7-Dec-2018
出版者: AIP Publishing
誌名: Journal of Applied Physics
巻: 124
号: 21
論文番号: 213105
抄録: White light-emitting diodes (LEDs), light sources that combine blue LEDs and yellow phosphors, are equipped with bulky optics such as lenses, mirrors, and/or reflectors to shape the light into the required directions. The presence of bulky optics causes optical loss and limits the design. Here, a periodic array of metallic nanocylinders, which exhibits a high scattering efficiency owing to the excitation of localized surface plasmon resonance, is proposed as an alternative means of achieving a directional output without the limitations of bulky optics. A prototype of a directional light emitter is fabricated consisting of an Al nanocylinder array on a yellow phosphor plate and a blue laser. The array shapes the yellow luminescence into the forward direction and generates directional quasi-white light (correlated color temperature of 4900 K). The intensity enhancement reaches a factor of five in the forward direction and is further improved up to a factor of seven by the deposition of a multilayer dichroic mirror on the back side of the phosphor plate, resulting in conversion efficiencies as high as 90 lm/W. Our results pave the way toward the development of efficient and compact directional white-light-source devices without any bulky optics.
記述: 次世代の指向性白色光源の開発に成功 --ナノアンテナで明日を照らす--. 京都大学プレスリリース. 2018-12-06.
著作権等: © 2018 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
URI: http://hdl.handle.net/2433/235593
DOI(出版社版): 10.1063/1.5050993
関連リンク: http://www.kyoto-u.ac.jp/ja/research/research_results/2018/181206_1.html
出現コレクション:学術雑誌掲載論文等

アイテムの詳細レコードを表示する

Export to RefWorks


出力フォーマット 


このリポジトリに保管されているアイテムはすべて著作権により保護されています。