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Nanoprinting with Crystal Engineering for Perovskite Lasers.

Shiqi Hu1,2,3, Ting Wang4,5, Zhiwen Zhou1

  • 1Department of Mechanical Engineering, The University of Hong Kong, Hong Kong, China.

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|December 6, 2025
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Summary

Researchers developed a 3D printing method for high-performance perovskite submicro-lasers. This technique allows for precise control over laser dimensions and performance, enabling new applications like anticounterfeiting labels.

Keywords:
3D printinganticounterfeitingcrystal engineeringinorganic halide perovskiteslasersvertical geometry

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Area of Science:

  • Materials Science
  • Optoelectronics
  • Nanotechnology

Background:

  • Metal halide perovskites offer excellent optical gain and solution processability for laser applications.
  • Current fabrication methods for perovskite laser cavities are limited by chemical synthesis or lithography, resulting in rigidity or poor performance.

Purpose of the Study:

  • To introduce a novel 3D printing technique for fabricating high-performance perovskite submicro-lasers.
  • To demonstrate on-demand tuning of lasing characteristics and explore applications in anticounterfeiting.

Main Methods:

  • Direct electrohydrodynamic 3D printing of inorganic perovskite submicro-lasers.
  • Crystal engineering and vapor-phase solvent engineering for enhanced crystallinity.
  • Two-photon pumped Fabry-Pérot mode lasing measurements.

Main Results:

  • Freestanding perovskite submicro-lasers with tailored dimensions and locations were successfully printed.
  • Achieved high-performance vertical lasing with a low threshold of 2.98 μJ cm⁻².
  • Demonstrated length-dependent lasing for multilevel anticounterfeiting labels.

Conclusions:

  • The direct 3D printing approach offers a simple and flexible route to tune laser characteristics.
  • This additive manufacturing method combined with crystal engineering advances microphotonic circuitry design and performance.
  • Potential applications include advanced anticounterfeiting solutions and integrated photonic devices.