Journal article
Voltage Control of Patterned Metal/Insulator Properties in Oxide/Oxyfluoride Lateral Perovskite Heterostructures via Ion Gel Gating
Advanced functional materials, v 32(49), 2208434
01 Dec 2022
Abstract
Dynamic control of patterned properties in perovskite oxide films can enable new architectures for electronic, magnetic, and optical devices. In this study, it is shown that SrFeO3‐δ/SrFeO2F laterally‐heterostructured films enable voltage‐controlled tunable and reversible metal‐insulator patterned properties using room‐temperature ion gel gating. Specifically, SrFeO3‐δ film regions can be toggled between insulating HxSrFeO2.5 and metallic SrFeO3 by electrochemical redox, while SrFeO2F regions remain robustly insulating and are unaffected by ion gel gating. Various gating architectures are also compared and establish the advantages of employing a conductive substrate as the contacting electrode, as opposed to at the film surface, thereby achieving complete and reversible reduction and oxidation among SrFeO3‐δ, HxSrFeO2.5, and SrFeO3. This approach to voltage‐modulated patterned electronic, optical, and magnetic properties should be broadly applicable to oxide materials amenable to fluoridation, and potentially other forms of anion substitution.
Electrolytic gating applied to lateral oxide/oxyfluoride perovskite heterostructures is used to demonstrate dynamic and reversible voltage control over a transition between lithographically defined metal/insulator and insulator/insulator lateral patterns at room temperature. This approach enables electric field modulation of anisotropic transport and optical responses.
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Details
- Title
- Voltage Control of Patterned Metal/Insulator Properties in Oxide/Oxyfluoride Lateral Perovskite Heterostructures via Ion Gel Gating
- Creators
- Benjamin M. Lefler - Drexel UniversityWilliam M. Postiglione - University of MinnesotaChris Leighton - University of MinnesotaSteven J. May - Drexel University, Materials Science and Engineering
- Publication Details
- Advanced functional materials, v 32(49), 2208434
- Publisher
- Wiley
- Number of pages
- 9
- Grant note
- National Science Foundation (NNCI‐1542153) National Science Foundation (DMR‐2011401) Division of Civil, Mechanical and Manufacturing Innovation (CMMI‐2001888) National Science Foundation (CMMI‐2001888) Division of Materials Research (DMR‐2011401)
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Materials Science and Engineering
- Web of Science ID
- WOS:000864147600001
- Scopus ID
- 2-s2.0-85139233562
- Other Identifier
- 991021861185404721
InCites Highlights
Data related to this publication, from InCites Benchmarking & Analytics tool:
- Collaboration types
- Domestic collaboration
- Web of Science research areas
- Chemistry, Multidisciplinary
- Chemistry, Physical
- Materials Science, Multidisciplinary
- Nanoscience & Nanotechnology
- Physics, Applied
- Physics, Condensed Matter