Nanometer-Thick Sr2IrO4Freestanding Films for Flexible Electronics

Sujan Shrestha; Matthew Coile; Menglin Zhu; Maryam Souri; Jiwoong Kim; Rina Pandey; Joseph W. Brill; Jinwoo Hwang; Jong Woo Kim; Ambrose Seo

doi:10.1021/acsanm.0c01351

Nanometer-Thick Sr₂IrO₄Freestanding Films for Flexible Electronics

Sujan Shrestha
, Matthew Coile
, Menglin Zhu
, Maryam Souri
, Jiwoong Kim
, Rina Pandey
, Joseph W. Brill
, Jinwoo Hwang
, Jong Woo Kim
, Ambrose Seo

Producción científica: Article › revisión exhaustiva

14 Citas (Scopus)

Resumen

We report the structural and optical properties of nanoscale Sr2IrO4 freestanding thin films fabricated using a water-soluble Sr3Al2O6 layer. The coherent lattice structure, phonon modes, two-magnon Raman scattering, and optical absorption spectra of the Sr2IrO4 nanomembrane are analogous to those of the layered iridate epitaxial thin films and single crystals. Remarkably, the formation of 3-unit-cell-thick SrIrO3 and interfacial composite layers alleviates the antiphase boundaries at the Sr2IrO4/Sr3Al2O6 interface, resulting in structurally robust nanomembranes. Our experimental results show that this freestanding thin-film approach of layered oxides can provide techniques for tuning or realizing unprecedented states beyond conventional thin-film methods, suggesting a pathway in achieving flexible layered-oxide electronics.

Idioma original	English
Páginas (desde-hasta)	6310-6315
Número de páginas	6
Publicación	ACS Applied Nano Materials
Volumen	3
N.º	7
DOI	https://doi.org/10.1021/acsanm.0c01351
Estado	Published - jul 24 2020

Nota bibliográfica

Publisher Copyright:
Copyright © 2020 American Chemical Society.

Financiación

We acknowledge the support of a National Science Foundation (NSF) Grant No. DMR-1454200 for thin-film synthesis and characterization. M.Z. and J.H. acknowledge support by NSF, under Grant No. DMR-1847964. Electron microscopy was performed at the Center for Electron Microscopy and Analysis at The Ohio State University. This research used resources of the Advanced Photon Source, a U.S. Department of Energy (DOE) Office of Science User Facility operated for the DOE Office of Science by Argonne National Laboratory under Contract No. DE-AC02-06CH11357. A.S. acknowledges the support from the Alexander von Humboldt Foundation (Research Fellowship for Experienced Researchers) for Raman spectroscopy experiments.

Financiadores	Número del financiador
U.S. Department of Energy EPSCoR
Office of Science Programs
Alexander von Humboldt-Stiftung
National Science Foundation Arctic Social Science Program	DMR-1847964, 1847964, DMR-1454200
Argonne National Laboratory	DE-AC02-06CH11357

ASJC Scopus subject areas

General Materials Science

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10.1021/acsanm.0c01351

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abstract = "We report the structural and optical properties of nanoscale Sr2IrO4 freestanding thin films fabricated using a water-soluble Sr3Al2O6 layer. The coherent lattice structure, phonon modes, two-magnon Raman scattering, and optical absorption spectra of the Sr2IrO4 nanomembrane are analogous to those of the layered iridate epitaxial thin films and single crystals. Remarkably, the formation of 3-unit-cell-thick SrIrO3 and interfacial composite layers alleviates the antiphase boundaries at the Sr2IrO4/Sr3Al2O6 interface, resulting in structurally robust nanomembranes. Our experimental results show that this freestanding thin-film approach of layered oxides can provide techniques for tuning or realizing unprecedented states beyond conventional thin-film methods, suggesting a pathway in achieving flexible layered-oxide electronics.",

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AU - Shrestha, Sujan

AU - Coile, Matthew

AU - Zhu, Menglin

AU - Souri, Maryam

AU - Kim, Jiwoong

AU - Pandey, Rina

AU - Brill, Joseph W.

AU - Hwang, Jinwoo

AU - Kim, Jong Woo

AU - Seo, Ambrose

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N2 - We report the structural and optical properties of nanoscale Sr2IrO4 freestanding thin films fabricated using a water-soluble Sr3Al2O6 layer. The coherent lattice structure, phonon modes, two-magnon Raman scattering, and optical absorption spectra of the Sr2IrO4 nanomembrane are analogous to those of the layered iridate epitaxial thin films and single crystals. Remarkably, the formation of 3-unit-cell-thick SrIrO3 and interfacial composite layers alleviates the antiphase boundaries at the Sr2IrO4/Sr3Al2O6 interface, resulting in structurally robust nanomembranes. Our experimental results show that this freestanding thin-film approach of layered oxides can provide techniques for tuning or realizing unprecedented states beyond conventional thin-film methods, suggesting a pathway in achieving flexible layered-oxide electronics.

AB - We report the structural and optical properties of nanoscale Sr2IrO4 freestanding thin films fabricated using a water-soluble Sr3Al2O6 layer. The coherent lattice structure, phonon modes, two-magnon Raman scattering, and optical absorption spectra of the Sr2IrO4 nanomembrane are analogous to those of the layered iridate epitaxial thin films and single crystals. Remarkably, the formation of 3-unit-cell-thick SrIrO3 and interfacial composite layers alleviates the antiphase boundaries at the Sr2IrO4/Sr3Al2O6 interface, resulting in structurally robust nanomembranes. Our experimental results show that this freestanding thin-film approach of layered oxides can provide techniques for tuning or realizing unprecedented states beyond conventional thin-film methods, suggesting a pathway in achieving flexible layered-oxide electronics.

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KW - SrIrO

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KW - interface

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