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Updated: Jul 5, 2026

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A fully solution-processed organic microcavity laser in the strong light-matter coupling regime.

Hassan A Qureshi1, Henri Lyyra1, Akseli Korkeamäki1

  • 1Department of Mechanical and Materials Engineering, University of Turku, Turku, Finland.

Nature Communications
|July 3, 2026
PubMed
Summary

Researchers developed fully solution-processed organic microcavities for polaritonics. This breakthrough enables low-cost, scalable fabrication of devices for advanced optical applications and nonlinear organic physics.

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Area of Science:

  • Materials Science
  • Optics
  • Condensed Matter Physics

Background:

  • Semiconductor lasers are crucial for modern technologies.
  • Polaritons, hybrid exciton-photon states, enable room-temperature effects like low-threshold lasing.
  • Organic semiconductors offer advantages for polaritonics but typically require vacuum-deposited optical cavities.

Purpose of the Study:

  • To demonstrate all-dielectric organic microcavities fabricated entirely by solution processing.
  • To investigate the strong coupling regime and polariton lasing in these novel structures.
  • To establish an accessible and tunable platform for nonlinear organic polariton physics.

Main Methods:

  • Fabrication of all-dielectric organic microcavities using only solution processing for both mirrors and the active layer.
  • Characterization of the microcavities to confirm operation in the strong coupling regime.
  • Investigation of polariton lasing and condensate behavior under high excitation densities.

Main Results:

  • The solution-processed organic microcavities operated in the strong coupling regime.
  • Polariton lasing was successfully achieved in these all-organic devices.
  • Reversible, detuning-dependent redistribution of the polariton condensate was observed at high excitation densities.

Conclusions:

  • Fully solution-processed organic microcavities provide an accessible and tunable platform for nonlinear organic polariton physics.
  • This approach overcomes limitations of vacuum deposition, paving the way for scalable, low-cost device fabrication.
  • The findings advance the development of organic devices for telecommunications, sensing, and quantum applications.