Room-Temperature Polariton Lasing from CdSe Core-Only Nanoplatelets.

Autor:	Freire-Fernández F; Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States., Sinai NG; Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States., Hui Tan MJ; Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States., Park SM; Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States., Koessler ER; Department of Chemistry, University of Rochester, Rochester, New York 14627, United States., Krauss T; Department of Chemistry, University of Rochester, Rochester, New York 14627, United States.; Institute of Optics, University of Rochester, Rochester, New York 14627, United States., Huo P; Department of Chemistry, University of Rochester, Rochester, New York 14627, United States.; Institute of Optics, University of Rochester, Rochester, New York 14627, United States., Odom TW; Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States.
Jazyk:	angličtina
Zdroj:	ACS nano [ACS Nano] 2024 Jun 11; Vol. 18 (23), pp. 15177-15184. Date of Electronic Publication: 2024 May 29.
DOI:	10.1021/acsnano.4c03164
Abstrakt:	This paper reports how CdSe core-only nanoplatelets (NPLs) coupled with plasmonic Al nanoparticle lattices can exhibit exciton-polariton lasing. By improving a procedure to synthesize monodisperse 4-monolayer CdSe NPLs, we could resolve polariton decay dynamics and pathways. Experiment and theory confirmed that the system is in the strong coupling regime based on anticrossings in the dispersion diagrams and magnitude of the Rabi-splitting values. Notably, polariton lasing is observed only for cavity lattice periodicities that exhibit specific dispersive characteristics that enable polariton accumulation. The threshold of polariton lasing is 25-fold lower than the reported photon lasing values from CdSe NPLs in similar cavity designs. This open-cavity platform offers a simple approach to control exciton polaritons anticipated to benefit quantum information processing, optoelectronics, and chemical reactions.
Databáze:	MEDLINE
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