| Presentation | 2015-11-26 Plasmonics with Aluminum applied to emission enhancements Koichi Okamoto, Kazutaka Tateishi, Shun Kawamoto, Haruku Nishida, Kaoru Tamada, Mitsuru Funato, Yoichi Kawakami, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | The use of “Plasmonics” is one very promising method to improve the emission efficiencies of light-emitting diodes (LEDs). In 2004, we reported for the first time large photoluminescence (PL) enhancements from InGaN/GaN quantum well (QW) materials coated with silver thin films. Aluminum is also a very advantageous metal to use SP resonance especially at deep UV wavelength region. We succeeded the enhancements of deep UV emission around ~260 nm from AlGaN/AlN QWs with Al coating. Moreover, we obtained unexpectedly large enhancement for green emissions from InGaN/GaN using Al film. The enhancement ratio reached 80, which was much larger than the previously reported enhancements on silver films. The resulting large enhancement should be attributed to an ~20-fold enhancement of the excitation efficiency and ~4-fold enhancement of the emission efficiency by the excitation and emission spectra. We concluded that the resonance between the excitation light and the SP on the Al surface should improve the excitation efficiency, i.e., the light absorption efficiency. This result suggests that the Al films have an extraordinary photon confinement effect, which are unique properties of plasmonics with Al and should be useful for new and wider applications. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Plasmonics / Surface plasmon / LED / InGaN / AlGaN / aluminum / Light-emitting devices |
| Paper # | ED2015-80,CPM2015-115,LQE2015-112 |
| Date of Issue | 2015-11-19 (ED, CPM, LQE) |
| Conference Information | |
| Committee | ED / LQE / CPM |
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| Conference Date | 2015/11/26(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Osaka City University Media Center |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Nitride Semiconductor Devices, Materials, Related Technologies |
| Chair | Koichi Maezawa(Univ. of Toyama) / Hajime Shoji(Sumitomo Electric Industries) / Satoru Noge(Numazu National College of Tech.) |
| Vice Chair | Kunio Tsuda(Toshiba) / Susumu Noda(Kyoto Univ.) / Fumihiko Hirose(Yamagata Univ.) |
| Secretary | Kunio Tsuda(NEC) / Susumu Noda(JAIST) / Fumihiko Hirose(NICT) |
| Assistant | Manabu Arai(New JRC) / Masataka Higashiwaki(NICT) / / Takashi Sakamoto(NTT) / Yuichi Nakamura(Toyohashi Univ. of Tech.) |
| Paper Information | |
| Registration To | Technical Committee on Electron Device / Technical Committee on Lasers and Quantum Electronics / Technical Committee on Component Parts and Materials |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Plasmonics with Aluminum applied to emission enhancements |
| Sub Title (in English) | |
| Keyword(1) | Plasmonics |
| Keyword(2) | Surface plasmon |
| Keyword(3) | LED |
| Keyword(4) | InGaN |
| Keyword(5) | AlGaN |
| Keyword(6) | aluminum |
| Keyword(7) | Light-emitting devices |
| 1st Author's Name | Koichi Okamoto |
| 1st Author's Affiliation | Kyushu University(Kyushu Univ.) |
| 2nd Author's Name | Kazutaka Tateishi |
| 2nd Author's Affiliation | Kyushu University(Kyushu Univ.) |
| 3rd Author's Name | Shun Kawamoto |
| 3rd Author's Affiliation | Kyushu University(Kyushu Univ.) |
| 4th Author's Name | Haruku Nishida |
| 4th Author's Affiliation | Kyushu University(Kyushu Univ.) |
| 5th Author's Name | Kaoru Tamada |
| 5th Author's Affiliation | Kyushu University(Kyushu Univ.) |
| 6th Author's Name | Mitsuru Funato |
| 6th Author's Affiliation | Kyoto University(Kyoto Univ.) |
| 7th Author's Name | Yoichi Kawakami |
| 7th Author's Affiliation | Kyoto University(Kyoto Univ.) |
| Date | 2015-11-26 |
| Paper # | ED2015-80,CPM2015-115,LQE2015-112 |
| Volume (vol) | vol.115 |
| Number (no) | ED-329,CPM-330,LQE-331 |
| Page | pp.pp.63-68(ED), pp.63-68(CPM), pp.63-68(LQE), |
| #Pages | 6 |
| Date of Issue | 2015-11-19 (ED, CPM, LQE) |