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Correction: Jiang et al. Methods for Obtaining One Single Larmor Frequency, Either <i>v</i><sub>1</sub> or <i>v</i><sub>2</sub>, in the Coherent Spin Dynamics of Colloidal Quantum Dots. <i>Nanomaterials</i> 2023, <i>13</i>, 2006.

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Enhanced Light-Matter Interaction in Porous Silicon Microcavities Structurally Optimized Using Theoretical Simulation

Evelyn Granizo1, Irina S Kriukova1,2, Aleksandr A Knysh1,2

  • 1Research Center Nano-Photon, National Research Nuclear University MEPhI (Moscow Engineering Physics Institute), 115409 Moscow, Russia.

Nanomaterials (Basel, Switzerland)
|December 10, 2025
PubMed
Summary
This summary is machine-generated.

Researchers developed advanced methods for fabricating porous silicon microcavities (pSiMCs) with enhanced light-matter interactions. This resulted in a twofold increase in quality factor (QF) and a 5.8-fold fluorescence spectrum narrowing for embedded R6G dye.

Keywords:
electrochemical etchingfluorescencelight–matter interactionoptical microcavitiesporous siliconquality factor

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Area of Science:

  • Optoelectronics and Photonics
  • Materials Science
  • Nanotechnology

Background:

  • Optical microcavities are crucial for controlling material properties via light-matter interactions.
  • Porous silicon microcavities (pSiMCs) offer advantages like tunable porosity and large surface area for optoelectronic and sensing applications.
  • Precise fabrication of pSiMCs and achieving high quality factors (QF) remain significant challenges.

Purpose of the Study:

  • To develop advanced, controlled fabrication methods for pSiMCs at room temperature.
  • To enhance light-matter interactions in pSiMCs by improving structural parameters and quality factors.
  • To demonstrate the improved performance of optimized pSiMCs in hybrid fluorescent structures.

Main Methods:

  • Combining theoretical/numerical simulations with experimental validation for microcavity design.
  • Implementing advanced protocols for controlled pSiMC fabrication at room temperature.
  • Integrating R6G dye into optimized pSiMCs to create hybrid fluorescent structures.

Main Results:

  • Achieved a twofold increase in the quality factor (QF) of pSiMCs, enhancing light confinement.
  • Demonstrated a 5.8-fold narrowing of the R6G fluorescence spectrum in hybrid structures.
  • Observed enhanced fluorescence signal due to increased spontaneous emission rate within the cavity.

Conclusions:

  • The developed methodology enables precise theoretical simulation and fabrication of pSiMCs for specific applications.
  • Optimized pSiMCs exhibit controllable optical properties, suitable for improved spectral resolution and luminescence efficiency.
  • This work advances the potential of pSiMCs for innovations in photonic systems and optoelectronic devices.