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July 15, 2026Nano Letters

Excitonic Landscape and Phonon-Mediated Recombination in Moiré-Engineered Twisted WSe 2 Bilayers

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Authors

MTMemansa ThapaIndian Institute of Technology MandiATA.W. ThomasIndian Institute of Technology MandiJJJayalekshmi U. JCouncil of Scientific and Industrial Research

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Overview

Randomized trial explores light emission and exciton dynamics in twisted WSe2 bilayers, suggesting new engineering methods.

Key Points

  • This research aims to investigate how twist-angle engineering in bilayer WSe2 affects excitonic properties and recombination dynamics.
  • Conducted low-temperature photoluminescence spectroscopy on twisted bilayer WSe2 encapsulated in hexagonal boron nitride (hBN) for light emission analysis.
  • Examined the impact of twist angle on exciton behavior and phonon-mediated recombinations.
  • Strong interlayer excitonic emission observed from the moiré superlattice, indicating enhanced recombination efficiency.
  • Twisting the bilayer significantly reduces emission from localized defect-bound excitons, showing the potential for controlled excitonic behavior.

Cite This Study

Thapa et al. (2026) studied this question.

synapsesocial.com/papers/6a57242188b21df875480aa2https://doi.org/10.1021/acs.nanolett.6c02685
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Also Consider

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  1. 1Optical Microcavity‐Induced Moiré Exciton Localization in Twisted WSe<sub>2</sub> Homobilayer2024 · 8 citations
  2. 2Amplification of interlayer exciton emission in twisted WSe2/WSe2/MoSe2 heterotrilayers2024 · 4 citations
  3. 3Strain‐Driven Modulation of Moiré Exciton Dynamics and Valley Polarization in Twisted WSe <sub>2</sub> Homobilayers2026 · 1 citations
  4. 4Probing Moiré Excitons in MoSe <sub>2</sub> /WSe <sub>2</sub> Heterobilayers by Combined Micro-photoluminescence and Lateral Force Microscopy2026
  5. 5Magnetic Field Brightening of Interlayer Excitons in Twisted-WSe<sub>2</sub>2025