Interaction of VSe2 with Ambient Gases: Stability and Chemical Reactivity

Raju Edla, Chia Nung Kuo, Piero Torelli, Chin Shan Lue, Danil W. Boukhvalov, Antonio Politano

Research output: Contribution to journalArticle

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Combining first-principles calculations with synchrotron-based X-ray photoelectron spectroscopy, the surface chemical reactivity of VSe2 single crystals toward oxygen, water, and air is assessed. It is found that the pristine, undefected surface is inert toward oxygen and water adsorption. The presence of Se defects drastically changes the surface reactivity. Specifically, water adsorption at room temperature is dissociative and mainly localized at Se vacancies. In contrast, surface oxidation is achieved only after long-term air exposure (1 month). These results are crucial to assess the surface stability in ambient environment in the prospect of VSe2-based applications.

Original languageEnglish
Article number1900332
JournalPhysica Status Solidi - Rapid Research Letters
Issue number2
Publication statusPublished - 2020 Feb 1


All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics

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