Bose-Einstein Condensation of Exciton-Polaritons in Organic Microcavities

Bose-Einstein condensation describes the macroscopic occupation of a single-particle mode: the condensate. This state can in principle be realized for any particles obeying Bose-Einstein statistics; this includes hybrid light-matter excitations known as polaritons. Some of the unique optoelectronic...

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Bibliographic Details
Published in:Annual review of physical chemistry 2020-04, Vol.71 (1), p.435-459
Main Authors: Keeling, Jonathan, Kéna-Cohen, Stéphane
Format: Article
Language:English
Subjects:
Bose-Einstein condensates
Condensates
Condensation
Excitation
Excitons
Holes
light-matter interaction
Microcavities
Optoelectronics
Organic chemistry
organic microcavities
polariton condensation
polariton lasing
Polaritons
Quantum statistics
Room temperature
strong coupling
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Summary:Bose-Einstein condensation describes the macroscopic occupation of a single-particle mode: the condensate. This state can in principle be realized for any particles obeying Bose-Einstein statistics; this includes hybrid light-matter excitations known as polaritons. Some of the unique optoelectronic properties of organic molecules make them especially well suited for the realization of polariton condensates. Exciton-polaritons form in optical cavities when electronic excitations couple collectively to the optical mode supported by the cavity. These polaritons obey bosonic statistics at moderate densities, are stable at room temperature, and have been observed to form a condensed or lasing state. Understanding the optimal conditions for polariton condensation requires careful modeling of the complex photophysics of organic molecules. In this article, we introduce the basic physics of exciton-polaritons and condensation and review experiments demonstrating polariton condensation in molecular materials.
ISSN:0066-426X
1545-1593
DOI:10.1146/annurev-physchem-010920-102509