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This study explores the potential of platinum-based transition metal dichalcogenides (TMDs), PtSe2 and PtTe2, for optical and gas sensing applications. Nanofilms of these materials were synthesized using a cost-effective and scalable thermally assisted conversion (TAC) method. Structural and morphological characterizations, including X-ray photoelectron spectroscopy (XPS) and Raman spectroscopy, confirmed the successful formation of high-quality PtSe2 and PtTe2 with minimal defects. Contact angle measurements revealed changes in surface wettability compared to the substrate, suggesting potential for tailored surface interactions. Optical sensing properties were investigated by measuring reflectance changes upon exposure to varying humidity levels. Both PtSe2 and PtTe2 exhibited significant reflectance shifts, indicating their sensitivity to humidity. These findings highlight the promise of TAC-synthesized PtSe2 and PtTe2 for integration into advanced sensing technologies.

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2D Transition Metal Dichalcogenides for Tunable Sensing Technologies

  • 会议论文

  • 发表日期：

    2025年

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  • N. Minev,
  • B. Napoleonov,
  • K. Lazarova,
  • V. Videva,
  • D. Petrova,
  • D. Nicheva,
  • T. Petkova,
  • D. Dimitrov,
  • V. Marinova

摘要

This study explores the potential of platinum-based transition metal dichalcogenides (TMDs), PtSe2 and PtTe2, for optical and gas sensing applications. Nanofilms of these materials were synthesized using a cost-effective and scalable thermally assisted conversion (TAC) method. Structural and morphological characterizations, including X-ray photoelectron spectroscopy (XPS) and Raman spectroscopy, confirmed the successful formation of high-quality PtSe2 and PtTe2 with minimal defects. Contact angle measurements revealed changes in surface wettability compared to the substrate, suggesting potential for tailored surface interactions. Optical sensing properties were investigated by measuring reflectance changes upon exposure to varying humidity levels. Both PtSe2 and PtTe2 exhibited significant reflectance shifts, indicating their sensitivity to humidity. These findings highlight the promise of TAC-synthesized PtSe2 and PtTe2 for integration into advanced sensing technologies.