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<p>In the present study, hydrothermally assisted chemical synthesis process has been employed to prepare undoped and Fe-doped ZnS nanostructures. The structural nature was verified through the X-ray diffraction (XRD) technique, which reveals a cubic zinc blende structure for all the samples. The elemental compositions and binding energies were verified by X-ray photoelectron spectroscopy (XPS) and indicated the inclusion of Fe into the ZnS framework. FE-SEM and TEM were utilized to probe the morphology and structure, which were consistent with the formation of well-distributed nanostructures. The PL spectra were measured to analyse the optical properties and the defect state of the prepared samples. UV-Vis analysis further confirmed the optical band gap modulation upon Fe doping. The electrochemical performance of the three-electrode supercapacitor device was investigated by using cyclic voltammetry (CV), galvanostatic charge-discharge (GCD), and electrochemical impedance spectroscopy (EIS) measurements. The Fe-doped ZnS samples showed good electrochemical characteristics as compared to the undoped ZnS, to have a potential in energy storage devices.</p>

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Tuneable optical and electrochemical properties of Fe-Doped ZnS nanostructures for supercapacitors applications

  • 期刊论文

  • 发表日期：

    2026年2月27日

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  • Pawan Kumar Pathak,
  • Devendra Kumar,
  • Santosh J. Uke,
  • Amit Kumar Singh,
  • Beer Pal Singh,
  • Subodh Kumar Sharma,
  • Aman Bhardwaj,
  • Deepak Kumar,
  • Ashwani Kumar

摘要

In the present study, hydrothermally assisted chemical synthesis process has been employed to prepare undoped and Fe-doped ZnS nanostructures. The structural nature was verified through the X-ray diffraction (XRD) technique, which reveals a cubic zinc blende structure for all the samples. The elemental compositions and binding energies were verified by X-ray photoelectron spectroscopy (XPS) and indicated the inclusion of Fe into the ZnS framework. FE-SEM and TEM were utilized to probe the morphology and structure, which were consistent with the formation of well-distributed nanostructures. The PL spectra were measured to analyse the optical properties and the defect state of the prepared samples. UV-Vis analysis further confirmed the optical band gap modulation upon Fe doping. The electrochemical performance of the three-electrode supercapacitor device was investigated by using cyclic voltammetry (CV), galvanostatic charge-discharge (GCD), and electrochemical impedance spectroscopy (EIS) measurements. The Fe-doped ZnS samples showed good electrochemical characteristics as compared to the undoped ZnS, to have a potential in energy storage devices.