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Reactive Oxidation Induced Stoichiometric Modulation of Multivalent Vanadium Oxidesopen access
- Authors
- Song, Sehwan; Lee, Dooyong; Son, Yeongjun; Choi, Yesul; Kim, Jiwoong; Han, Seunghoon; Lee, Jisung; Kim, Seokjun; Jeong, Seung Gyo; Lim, Si-Heon; Yan, Jiafeng; Kim, Songkil; Choi, Woo Seok; Kim, Hyun Ho; Kim, Jaeyong; Bae, Jong-Seong; Takesue, Naoshia; Hwang, Chanyong; Park, Sungkyun
- Issue Date
- Apr-2024
- Publisher
- Wiley-VCH
- Keywords
- multivalent vanadium oxides; phase transitions; reactive oxygen annealing
- Citation
- Small Science, v.4, no.4, pp 1 - 9
- Pages
- 9
- Indexed
- SCOPUS
ESCI
- Journal Title
- Small Science
- Volume
- 4
- Number
- 4
- Start Page
- 1
- End Page
- 9
- ISSN
- 2688-4046
2688-4046
- Abstract
- Vanadium oxides, such as V2O3, VO2, and V2O5, have attracted considerable attention because of the fascinating physical properties of each oxidation state. On the other hand, precisely controlling the individual oxidation states is difficult due to the sensitivity of oxygen stoichiometry. This article reports that reactive oxygen annealing (ROA) can systematically change the oxidation state of the vanadium oxide films grown on a c-Al2O3 substrate compared with typical annealing under O2 environments. Chemical, structural, electronic, and electrical analysis confirms the evolution of the vanadium oxide phases from V2O3 to V2O3/VO2, VO2, VO2/V2O5, and V2O5, showing that the ROA method can control and tune the oxidation state of the highly oxygen-sensitive multivalent metal oxides.
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Related Researcher
- Kim, Jae yong
- COLLEGE OF NATURAL SCIENCES (DEPARTMENT OF PHYSICS)