ペロブスカイトのナノ加工・再結晶化法を用いたオンチップレーザアレイ

2021 Fiscal Year Annual Research Report

• Project/Area Number: 21J11825
• Research Institution: The University of Tokyo
• Principal Investigator: XING DI 東京大学, 工学系研究科, 特別研究員(DC2)
• Project Period (FY): 2021-04-28 – 2023-03-31
• Keywords: Nanolaser / Perovskite / CsPbBr3 nanocrystals / single mode laser / plasmonic laser / plasmonic waveguide

Outline of Annual Research Achievements

First part, a self-healing lithographic patterning technique using perovskite CsPbBr3 nanocrystals is demonstrated to realize high-quality and high-crystallinity single-mode laser arrays. The self-healing process is compatible with the standard lithography process and greatly improves the quality of lithographic laser cavities. A single-mode microdisk laser array is demonstrated with a low threshold.
Second part, by embedding Ag NWs in NCs film, localized surface plasmon resonance (LSPR) supported random lasing is observed. When the pump light is focused on a single Ag NW, a NC-NW coupled plasmonic-waveguide laser with a much narrower emission peak is realized on a single Ag NW.

Current Status of Research Progress

2: Research has progressed on the whole more than it was originally planned.

Reason

First, we successfully developed a self-healing lithographic patterning technique using perovskite CsPbBr3 nanocrystals and demonstrated a large area perovskite single-mode laser arrays. The control of the lasing wavelength is made possible over a range of up to 6.4 nm by precise fabrication of the laser cavities.
Second, we observed LSPR-supported random lasing from Ag nanowire embedded CsPbBr3 nanocrystals film and achieved a plasmonic-waveguide laser with a much narrower emission peak (FWHM = 0.4 nm) by pumping a single Ag NW. By using the proposed QD-NW plasmonic-waveguide lasers, a dual-wavelength plasmonic nanolaser switch is realized by controlling the polarization direction of the emission light.

Strategy for Future Research Activity

For the large area single-mode laser array, a plasmonic microdisk laser will be demonstrated by fabricating the cavities on Ag film. A waveguide coupled system will be also fabricated to guide the lasing mode in-plane.
For the LSPR supported laser, an ultralow threshold plasmonic lattice laser by using CsPbBr3 nanocrystals will be demonstrated. By adjusting the band structure to match the emission of CsPbBr3 nanocrystals, a controlled directional emission can be achieved.

Research Products

• [Journal Article] Metallic Nanowire Coupled CsPbBr3 Quantum Dots Plasmonic Nanolaser (2021)
  • Author(s): Xing Di、Lin Cheng‐Chieh、Won Phillip、Xiang Rong、Chen Tzu‐Pei、Kamal A. Syazwan A.、Lee Yang‐Chun、Ho Ya‐Lun、Maruyama Shigeo、Ko Seung Hwan、Chen Chun‐Wei、Delaunay Jean‐Jacques
  • Journal Title: Advanced Functional Materials Volume: 31 Pages: 2102375～2102375
  • DOI: 10.1002/adfm.202102375
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Lithographic in-mold patterning for CsPbBr3 nanocrystals distributed Bragg reflector single-mode laser (2021)
  • Author(s): Ahmad Kamal Ahmad Syazwan、Lin Cheng-Chieh、Xing Di、Lee Yang-Chun、Wang Zhiyu、Chen Mu-Hsin、Ho Ya-Lun、Chen Chun-Wei、Delaunay Jean-Jacques
  • Journal Title: Nanoscale Volume: 13 Pages: 15830～15836
  • DOI: 10.1039/D1NR04543A
  • Peer Reviewed / Int'l Joint Research
• [Presentation] Plasmonic Nanolaser by Silver Nanowire Embedded in CsPbBr3 Quantum Dots (2021)
  • Author(s): D. Xing, C.-C. Lin, P. Won, R. Xiang, T.-P. Chen, A. S. A. Kamal, Y.-C. Lee, Y.-L. Ho, S. Maruyama, S.H. Ko, C.-W. Chen, J. J. Delaunay
  • Organizer: The 82nd JSAP Autumn Meeting
• [Presentation] Plasmonic Nanolaser by Silver Nanowire Embedded in CsPbBr3 Quantum Dots (2021)
  • Author(s): D. Xing, C.-C. Lin, P. Won, R. Xiang, T.-P. Chen, A. S. A. Kamal, Y.-C. Lee, Y.-L. Ho, S. Maruyama, S.H. Ko, C.-W. Chen, J. J. Delaunay
  • Organizer: UTokyo-NTU Joint seminar
  • Int'l Joint Research