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Abstract <p>The development and application of multilayer semiconductor catalytic nanostructures based on transition metal chalcogenides (TMCs) with a given energy band structure is a promising area in the hydrogen industry. Electric fields in the contact region of the heterojunctions contribute to the separation and accelerated transfer of nonequilibrium light-induced carriers in the bulk of the photoactive nanocatalyst material. The work presents investigation of nanostructure and photocatalytic properties of two-stage MoS<sub>2</sub>/WS<sub>2</sub>/WSe<sub>2</sub> heterostructures obtained by pulsed laser deposition. A significant increase in photocurrent in the heterostructure has been achieved compared to photocathodes based on individual films included in the heterostructure composition. The application of highly informative methods of analysis (high-resolution transmission electron microscopy and Raman spectroscopy), as well as quantum chemical calculations using the density functional method, has made it possible to identify factors that can have an important impact on the functional characteristics of the created heterostructure.</p>

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Structure and Photocatalytic Properties of Carbon Cathode with MoSx/WS2/WSe2 Nanostructured Thin Coating for Hydrogen Production

  • 期刊论文

  • 发表日期：

    2025年12月21日

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  • O. V. Rubinkovskaya,
  • D. V. Fominski,
  • R. I. Romanov,
  • V. Yu. Fominski

摘要

Abstract

The development and application of multilayer semiconductor catalytic nanostructures based on transition metal chalcogenides (TMCs) with a given energy band structure is a promising area in the hydrogen industry. Electric fields in the contact region of the heterojunctions contribute to the separation and accelerated transfer of nonequilibrium light-induced carriers in the bulk of the photoactive nanocatalyst material. The work presents investigation of nanostructure and photocatalytic properties of two-stage MoS2/WS2/WSe2 heterostructures obtained by pulsed laser deposition. A significant increase in photocurrent in the heterostructure has been achieved compared to photocathodes based on individual films included in the heterostructure composition. The application of highly informative methods of analysis (high-resolution transmission electron microscopy and Raman spectroscopy), as well as quantum chemical calculations using the density functional method, has made it possible to identify factors that can have an important impact on the functional characteristics of the created heterostructure.