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August 13, 2026MicroOpen Access

Synthesis of 2D WSe2 Using an Intermediate UV–Ozone Treatment of Tungsten Precursor

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Authors

IDIrnik DionisievVVVladimira VidevaDKDaniela Karashanova

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Overview

Randomized trial demonstrates improved structural and optoelectronic properties in tungsten diselenide nanosheets, indicating a new synthesis pathway.

Key Points

  • This study aims to enhance the synthesis of two-dimensional tungsten diselenide (WSe2) with improved properties for optoelectronic applications.
  • Utilized a modified two-step thermally assisted conversion method with intermediate UV–ozone treatment.
  • Conducted selenization of magnetron-sputtered tungsten films to produce WSe2 via chemical vapor deposition.
  • Performed morphological and optical evaluations using techniques such as transmission electron microscopy and Raman spectroscopy.
  • The ozonated precursors produced uniform, triangular WSe2 flakes exceeding 5 µm in size.
  • The electronic band structure showed a shift in the valence band maximum to 0.35 eV due to residual oxygen doping.
  • Optical characterizations displayed significant transmittance improvements and excitonic absorption shifts.

Cite This Study

Dionisiev et al. (2026) studied this question.

synapsesocial.com/papers/6a7d769b2b0e0cff3f6401b4https://doi.org/10.3390/micro6030066
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