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dc.contributor.author | Kamakura, Ryosuke | en |
dc.contributor.author | Murai, Shunsuke | en |
dc.contributor.author | Yokobayashi, Yusuke | en |
dc.contributor.author | Takashima, Keijiro | en |
dc.contributor.author | Kuramoto, Masaru | en |
dc.contributor.author | Fujita, Koji | en |
dc.contributor.author | Tanaka, Katsuhisa | en |
dc.contributor.alternative | 鎌倉, 涼介 | ja |
dc.contributor.alternative | 村井, 俊介 | ja |
dc.contributor.alternative | 横林, 裕介 | ja |
dc.contributor.alternative | 高島, 啓次郎 | ja |
dc.contributor.alternative | 倉本, 大 | ja |
dc.contributor.alternative | 藤田, 晃司 | ja |
dc.contributor.alternative | 田中, 勝久 | ja |
dc.date.accessioned | 2018-12-06T05:01:01Z | - |
dc.date.available | 2018-12-06T05:01:01Z | - |
dc.date.issued | 2018-12-07 | - |
dc.identifier.issn | 0021-8979 | - |
dc.identifier.uri | http://hdl.handle.net/2433/235593 | - |
dc.description | 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. | ja |
dc.description.abstract | 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. | en |
dc.format.mimetype | application/pdf | - |
dc.language.iso | eng | - |
dc.publisher | AIP Publishing | en |
dc.rights | © 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/). | en |
dc.title | Enhanced photoluminescence and directional white-light generation by plasmonic array | en |
dc.type | journal article | - |
dc.type.niitype | Journal Article | - |
dc.identifier.jtitle | Journal of Applied Physics | en |
dc.identifier.volume | 124 | - |
dc.identifier.issue | 21 | - |
dc.relation.doi | 10.1063/1.5050993 | - |
dc.textversion | publisher | - |
dc.identifier.artnum | 213105 | - |
dc.relation.url | https://www.kyoto-u.ac.jp/ja/research-news/2018-12-06 | - |
dcterms.accessRights | open access | - |
datacite.awardNumber | 16H04217 | - |
jpcoar.funderName | 日本学術振興会 | ja |
jpcoar.funderName.alternative | Japan Society for the Promotion of Science (JSPS) | en |
出現コレクション: | 学術雑誌掲載論文等 |
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