Development of new functional optical devices using near-field excitation at the hetero interface in nanometer-scale

• Project/Area Number: 18H01470
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Review Section: Basic Section 21050:Electric and electronic materials-related
• Research Institution: Toyohashi University of Technology (2020-2021); The University of Tokyo (2018-2019)
• Principal Investigator: Yatsui Takashi 豊橋技術科学大学, 工学(系)研究科(研究院), 教授 (80505248)
• Project Period (FY): 2018-04-01 – 2021-03-31
• Project Status: Completed (Fiscal Year 2021)
• Budget Amount: ¥17,290,000 (Direct Cost: ¥13,300,000、Indirect Cost: ¥3,990,000); Fiscal Year 2020: ¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000); Fiscal Year 2019: ¥5,850,000 (Direct Cost: ¥4,500,000、Indirect Cost: ¥1,350,000); Fiscal Year 2018: ¥6,240,000 (Direct Cost: ¥4,800,000、Indirect Cost: ¥1,440,000)
• Keywords: 近接場光 / 非一様光場 / 波数励起 / 近接場光励起 / ヘテロ界面 / 受光センサ / シリコン / 間接遷移半導体

Outline of Final Research Achievements

We developed a Si photodetector with high efficiency by utilizing the effect of wavevector excitation and second harmonic generation by the optical near-field. To realize this, we fabricated Si photodetector with nanosctuctures of gold nanoparticle, we examined the efficiency.
We successfully realized that the efficiency was increased as increase in the wavelength to the band gap wavelength around 1100 nm. The efficiency was increased by 20 times in comparison with that without nanosctuctures.

Academic Significance and Societal Importance of the Research Achievements

間接遷移半導体であるSiの光吸収増大を実証することで、太陽電池分野への応用利用が期待される。Si以外にも受光感度が低い間接遷移半導体の利用範囲が広がる。また、二次高調波発生により、バンド端波長よりも長波長帯の利用可能性が広まり、アイセーフ波長光の利用の更なる拡大を図る上で、環境にもやさしいSiを受光材料とする受光センサ実現が期待される。近年自動運転や、ドローンなどに利用される受光センサの開発が盛んであるが、本課題で開発された高感度Si受光センサの実現により、アイセーフ波長用受光センサの低コスト化とそれに伴う広範な普及が進むと期待される。

Research Products

• [Journal Article] High‐Q and Tailorable Fano Resonances in a One‐Dimensional Metal‐Optical Tamm State Structure: From a Narrowband Perfect Absorber to a Narrowband Perfect Reflector (2021)
  • Author(s): Wang Zhiyu、Ho Ya‐Lun、Cao Tun、Yatsui Takashi、Delaunay Jean‐Jacques
  • Journal Title: Advanced Functional Materials Volume: － Issue: 26 Pages: 2102183-2102183
  • DOI: 10.1002/adfm.202102183
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Magnetometer with nitrogen-vacancy center in a bulk diamond for detecting magnetic nanoparticles in biomedical applications (2020)
  • Author(s): Kuwahata Akihiro、Kitaizumi Takahiro、Saichi Kota、Sato Takumi、Igarashi Ryuji、Ohshima Takeshi、Masuyama Yuta、Iwasaki Takayuki、Hatano Mutsuko、Jelezko Fedor、Kusakabe Moriaki、Yatsui Takashi、Sekino Masaki
  • Journal Title: Scientific Reports Volume: 10 Issue: 1 Pages: 2483-2483
  • DOI: 10.1038/s41598-020-59064-6
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Visible light-induced thymine dimerisation based on large localised field gradient by non-uniform optical near-field (2019)
  • Author(s): Tate Naoya、Yatsui Takashi
  • Journal Title: Scientific Reports Volume: 9 Issue: 1 Pages: 18383-18383
  • DOI: 10.1038/s41598-019-54661-6
  • Peer Reviewed / Open Access
• [Journal Article] Recent improvement of silicon absorption in opto-electric devices (2019)
  • Author(s): Yatsui Takashi、School of Engineering, University of Tokyo, Tokyo 113-8656, Japan.
  • Journal Title: Opto-Electronic Advances Volume: 2 Issue: 10 Pages: 19002301-19002301
  • DOI: 10.29026/oea.2019.190023
  • Peer Reviewed / Open Access
• [Journal Article] Enhanced photo-sensitivity in a Si photodetector using a near-field assisted excitation (2019)
  • Author(s): Yatsui T.、Okada S.、Takemori T.、Sato T.、Saichi K.、Ogamoto T.、Chiashi S.、Maruyama S.、Noda M.、Yabana K.、Iida K.、Nobusada K.
  • Journal Title: Communications Physics Volume: 2 Issue: 1 Pages: 62-62
  • DOI: 10.1038/s42005-019-0173-1
  • Peer Reviewed / Open Access
• [Journal Article] Realization of red shift of absorption spectra using optical near-field effect (2019)
  • Author(s): Yatsui Takashi、Nakahira Yusuke、Nakamura Yuki、Morimoto Tatsuki、Kato Yuma、Yamamoto Muneaki、Yoshida Tomoko、Iida Kenji、Nobusada Katsuyuki
  • Journal Title: Nanotechnology Volume: 30 Issue: 34 Pages: 34LT02-34LT02
  • DOI: 10.1088/1361-6528/ab2092
  • Peer Reviewed
• [Journal Article] Direct Wave-Vector Excitation in an Indirect-Band-Gap Semiconductor of Silicon with an Optical Near-field (2019)
  • Author(s): Noda Masashi、Iida Kenji、Yamaguchi Maiku、Yatsui Takashi、Nobusada Katsuyuki
  • Journal Title: Physical Review Applied Volume: 11 Issue: 4 Pages: 044053-044053
  • DOI: 10.1103/physrevapplied.11.044053
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Improving the electron spin properties of nitrogen-vacancy centres in nanodiamonds by near-field etching (2018)
  • Author(s): Brandenburg F.、Nagumo R.、Saichi K.、Tahara K.、Iwasaki T.、Hatano M.、Jelezko F.、Igarashi R.、Yatsui T.
  • Journal Title: Scientific Reports Volume: 8 Issue: 1 Pages: 15847-15847
  • DOI: 10.1038/s41598-018-34158-4
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Presentation] New Photochemical Reactions and the Applications Using a Non-Uniform Optical Near-Field (2021)
  • Author(s): T. Yatsui
  • Organizer: Global Summit and Expo on Laser, Optics and Photonics (GSELOP2021)
  • Int'l Joint Research / Invited
• [Presentation] Nano Heater-A novel Quantum Dot device realizing nano size light and heat source for Heat Assisted Magnetic Recording (HAMR) Hard Disk and beyond (2021)
  • Author(s): Kazumi Kuriyama, Satoshi Sugiura, and Takashi Yatsui
  • Organizer: International Symposium on Imaging, Sensing, and Optical Memory 2021 (ISOM’21)
  • Int'l Joint Research / Invited
• [Presentation] 非一様光場による新奇光化学反応とその応用 (2021)
  • Author(s): 八井 崇
  • Organizer: レーザー学会中部支部2021年度若手研究発表会
  • Invited
• [Presentation] 金ナノ微粒子を用いたSi受光器の高効率化 (2021)
  • Author(s): 上野山 翔太、飛沢 健、勝見 亮太、藤原 弘康、飯田 健二、 矢花 一浩、八井 崇
  • Organizer: 第82回応用物理学会秋季学術講演会
• [Presentation] 表面ナノ構造によるSi受光器の高効率化 (2020)
  • Author(s): 浅沼 将人、藤原 弘康、飯田 健二、野田 真史、矢花 一浩、八井 崇
  • Organizer: 第67回応用物理学会春季学術講演会
• [Presentation] Recent development of the photochemical reactions and the opto-electric (2019)
  • Author(s): Takashi Yatsui
  • Organizer: The International Symposium on Plasmonics and Nano-photonics (iSPN2019)
  • Int'l Joint Research / Invited
• [Presentation] Applications of novel optical near-field reactions based on a special non-uniformity (2019)
  • Author(s): Takashi Yatsui
  • Organizer: The 12th Asia‐Pacific Conference on Near‐field Optics (APNFO12)
  • Int'l Joint Research / Invited
• [Presentation] Direct wave vector excitations of silicon with optical near fields (2019)
  • Author(s): Masashi NODA, Kenji IIDA, Maiku YAMAGUCHI, Takashi YATSUI, Katsuyuki NOBUSADA
  • Organizer: The International Symposium on Plasmonics and Nano-photonics (iSPN2019)
• [Presentation] 顕微分光法による近接場光励起Si受光器の評価 (2019)
  • Author(s): 浅沼 将人、藤原 弘康、飯田 健二、野田 真史、矢花 一浩、八井 崇
  • Organizer: Optics & Photonics Japan 2019
• [Presentation] 近接場光援用光吸収によるシリコン受光感度の高効率化 (2019)
  • Author(s): 竹森 達也、齋地 康太、佐藤 匠、大鋸本 達郎、千足 昇平、丸山 茂夫、野田 真史、矢花 一浩、飯田 健二、信定 克幸、八井 崇
  • Organizer: 2019年第66回応用物理学会春季学術講演会
• [Presentation] Massively-parallel time-dependent density functional theory calculations for optical near-field excitations in silicon (2019)
  • Author(s): Masashi Noda, Kenji Iida, Maiku Yamaguchi, Kazuya Ishimura, Takashi Yatsui, Katsuyuki Nobusada, Kazuhiro Yabana
  • Organizer: APS March Meeting 2019
  • Int'l Joint Research
• [Remarks] Yatsui Research Group
  • URL: https://lux.ee.tut.ac.jp
• [Remarks] Yatsui Research Group
  • URL: https://lux.ee.tut.ac.jp/
• [Remarks] Yatsui Research Group
  • URL: http://www.lux.t.u-tokyo.ac.jp/