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Updated: May 15, 2025
11:10
Atomic Layer Deposition of Vanadium Dioxide and a Temperature-dependent Optical Model
Published on: May 23, 2018
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Reactive Oxidation Induced Stoichiometric Modulation of Multivalent Vanadium Oxides
Sehwan Song1,2, Dooyong Lee1,3, Yeongjun Son1
1Department of Physics Pusan National University Busan 46241 Korea.
Small Science
|April 11, 2025
Summary
Reactive oxygen annealing (ROA) offers precise control over vanadium oxide film oxidation states. This method enables systematic tuning of vanadium oxide phases, overcoming challenges with oxygen sensitivity.
Area of Science:
- Materials Science
- Solid State Chemistry
- Thin Film Deposition
Background:
- Vanadium oxides (V2O3, VO2, V2O5) exhibit unique properties tied to their oxidation states.
- Precise control over these oxidation states is challenging due to oxygen stoichiometry sensitivity.
Purpose of the Study:
- To investigate a novel method for systematically controlling vanadium oxide oxidation states.
- To demonstrate the capability of reactive oxygen annealing (ROA) for tuning multivalent metal oxide properties.
Main Methods:
- Growth of vanadium oxide films on c-Al2O3 substrates.
- Annealing treatments using reactive oxygen annealing (ROA).
- Comprehensive analysis including chemical, structural, electronic, and electrical characterization.
Main Results:
- ROA successfully induced a controlled evolution of vanadium oxide phases.
- Observed phase transitions include V2O3, V2O3/VO2, VO2, VO2/V2O5, and V2O5.
- Demonstrated superior control compared to conventional oxygen annealing.
Conclusions:
- Reactive oxygen annealing (ROA) provides a robust method for tuning the oxidation states of vanadium oxides.
- This technique is effective for controlling highly oxygen-sensitive multivalent metal oxides.
- ROA facilitates the precise engineering of vanadium oxide properties for potential applications.
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