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<p>Molybdenum disulfide (MoS<sub>2</sub>)/Poly (3,4-ethylenedioxythiophene): poly(styrenesulfonate) (PEDOT: PSS) nanocomposites have attracted a great deal of interest in the area of organic electronics and optoelectronics due to their exceptional conducting nature. In this work, we present a novel hydrothermal method for synthesis of 1T phase dominant hybrid-phase MoS<sub>2</sub> nanosheets and its synergic properties with PEDOT:PSS to facilitate improved charge transport with better 1T phase stability. The prepared nanocomposites are characterized by X-ray diffraction (XRD), Field Emission Scanning Electron Microscope (FESEM), Transmission Electron Microscopy (TEM), UV–visible (UV–Vis) absorption spectroscopy, Photoluminescence (PL) spectroscopy, Fourier Transform Infrared (FTIR) spectroscopy, Raman spectroscopy and X-ray Photoelectron (XPS) spectroscopy. XRD spectra of MoS<sub>2</sub> show peaks at 2θ values of 9.16°, 17.4°, 33.3° and 57.5° corresponding to different planes of both 1T and 2H phases. The FESEM images reveal the flower-like MoS<sub>2</sub> of approximate diameter ~ 670&#xa0;nm consists of numerous curly nanosheets stacked together. TEM images reveal corrugated nanosheet structures with distinct lattice fringes. The UV–Vis spectra of MoS<sub>2</sub> shows a broad absorption in the range ~ 210–280&#xa0;nm, with two other broad peaks at ~ 690&#xa0;nm and ~ 1012&#xa0;nm. Raman and XPS spectroscopy confirm formation of 1T-dominated mixed phase (1T/2H@MoS<sub>2</sub>) nanosheets. Conductivity measurements using I–V graphs show enhanced conductivity for the nanocomposite up to 1.3&#xa0;s/m in comparison to pristine MoS<sub>2</sub> and PEDOT:PSS polymer.</p> Graphical abstract <p></p>

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1T phase dominant hybrid 1T/2H@MoS2/PEDOT:PSS nanocomposites for potential charge transport applications

  • 期刊论文

  • 发表日期：

    2025年9月5日

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  • Iswar P. Borgohain,
  • Saiyad A. Ali,
  • Sarathi Kundu,
  • Sulochana Deb

摘要

Molybdenum disulfide (MoS2)/Poly (3,4-ethylenedioxythiophene): poly(styrenesulfonate) (PEDOT: PSS) nanocomposites have attracted a great deal of interest in the area of organic electronics and optoelectronics due to their exceptional conducting nature. In this work, we present a novel hydrothermal method for synthesis of 1T phase dominant hybrid-phase MoS2 nanosheets and its synergic properties with PEDOT:PSS to facilitate improved charge transport with better 1T phase stability. The prepared nanocomposites are characterized by X-ray diffraction (XRD), Field Emission Scanning Electron Microscope (FESEM), Transmission Electron Microscopy (TEM), UV–visible (UV–Vis) absorption spectroscopy, Photoluminescence (PL) spectroscopy, Fourier Transform Infrared (FTIR) spectroscopy, Raman spectroscopy and X-ray Photoelectron (XPS) spectroscopy. XRD spectra of MoS2 show peaks at 2θ values of 9.16°, 17.4°, 33.3° and 57.5° corresponding to different planes of both 1T and 2H phases. The FESEM images reveal the flower-like MoS2 of approximate diameter ~ 670 nm consists of numerous curly nanosheets stacked together. TEM images reveal corrugated nanosheet structures with distinct lattice fringes. The UV–Vis spectra of MoS2 shows a broad absorption in the range ~ 210–280 nm, with two other broad peaks at ~ 690 nm and ~ 1012 nm. Raman and XPS spectroscopy confirm formation of 1T-dominated mixed phase (1T/2H@MoS2) nanosheets. Conductivity measurements using I–V graphs show enhanced conductivity for the nanocomposite up to 1.3 s/m in comparison to pristine MoS2 and PEDOT:PSS polymer.

Graphical abstract