2022 Fiscal Year Annual Research Report

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

Research Project

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 / Single mode laser / Plasmonic lattice / Srface-emitting laser / CsPbBr3 nanocrystal
Outline of Annual Research Achievements	Perovskites CsPbX3 (X = Br, Cl, I) nanocrystals(NCs), gain great attention due to their outstanding optical performance. A major limitation of realizing CsPbX3-based lasers by top-down fabrication method is that they can be easily damaged by the solvents used in the lithography/lift-off process and during the dry etching process. Developing a way of the utilization of CsPbX3 NCs in the top-down fabrication method is highly desired. In this part, by simply combining CsPbBr3 NC film with a fine-designed structure, a CsPbBr3 NC thin film-based plasmonic lattice laser is demonstrated by using a pressure-assisted recrystallization process. Due to the low surface scattering loss and good interaction between gain media and Ag NPs, a low threshold single-mode lasing is achieved.
Research Progress Status	令和4年度が最終年度であるため、記入しない。
Strategy for Future Research Activity	令和4年度が最終年度であるため、記入しない。