| Title: | Structural Insights and hydrogen retention in amorphous and crystalline tungsten oxide films |
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| Authors: | ID Zavašnik, Janez, Institut "Jožef Stefan" (Author)
ID Shvalya, Vasyl, Institut "Jožef Stefan" (Author)
ID Kremer, Kristof (Author)
ID Schwarz-Selinger, Thomas (Author)
ID Jacob, Wolfgang (Author) |
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| Files: |  PDF - Presentation file, download (12,30 MB)
MD5: 40F53427FA63612FF3FA6DA73BF1880C
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| Language: | English |
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| Typology: | 1.01 - Original Scientific Article |
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| Organization: |  IJS - Jožef Stefan Institute
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| Abstract: | We investigated structural characteristics of and hydrogen isotope interactions with thermally and electro chemically synthesized tungsten oxide (W-oxide) thin films (≤50 nm). Specifically, we assessed whether elec trochemically synthesized W-oxide could serve as a suitable proxy for thermally grown films in hydrogen interaction studies. The W-oxide thin films were exposed to low-energetic atomic deuterium (D) to explore the hydrogen uptake, retention, and intercalation effects of the W-oxide structure. The W-oxides were characterized using grazing incidence X-ray diffraction (GI-XRD), scanning and transmission electron microscopy (SEM, TEM), Raman spectroscopy, and Fourier-transform infrared spectroscopy (FTIR) before and after deuterium exposure. The thermally grown W-oxides are crystalline, composed of orthorhombic WO3, while the electrochemically grown W-oxides are amorphous with nanocrystalline domains. Deuterium retention studies revealed that the electrochemically grown W-oxides show higher initial D retention compared with their thermally grown coun terparts and lower D release over time during storage, suggesting stronger D binding within the amorphous matrix. Using ion beam analysis, we quantified the deuterium retention and examined the depth-resolved reduction of the oxide within the films following deuterium exposure |
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| Publication status: | Published |
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| Publication version: | Version of Record |
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| Submitted for review: | 12.12.2024 |
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| Article acceptance date: | 15.02.2025 |
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| Publication date: | 19.02.2025 |
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| Publisher: | Elsevier |
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| Year of publishing: | 2025 |
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| Number of pages: | 10 str. |
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| Numbering: | Vol. 692, Art. 162712 |
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| Source: | Nizozemska |
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| PID: | 20.500.12556/DiRROS-21578  |
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| UDC: | 539 |
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| ISSN on article: | 0169-4332 |
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| DOI: | 10.1016/j.apsusc.2025.162712 |
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| COBISS.SI-ID: | 226971395 |
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| Copyright: | © 2025 The Author(s) |
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| Publication date in DiRROS: | 28.02.2025 |
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| Views: | 646 |
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| Downloads: | 164 |
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