Epitaxially grown single-crystalline SrTiO3 membranes using a solution-processed, amorphous SrCa2Al2O6 sacrificial layer

Varshney, Shivasheesh; Ramis, Martí; Choo, Sooho; Coll, Mariona; Jalan, Bharat

doi:10.1039/d4tc02030h

J. Mater. Chem. C

2024

DOI: 10.1039/d4tc02030h

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Epitaxially grown single-crystalline SrTiO₃ membranes using a solution-processed, amorphous SrCa₂Al₂O₆ sacrificial layer

Shivasheesh Varshney,

Martí Ramis,

Sooho Choo

et al.

Abstract: Water-soluble sacrificial layers based on epitaxially-grown, single crystalline (Ca, Sr, Ba)3Al2O6 layer are widely used for creating free-standing perovskite oxide membranes. However, obtaining these sacrificial layers with intricate stoichiometry remains...

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From oxide epitaxy to freestanding membranes: Opportunities and challenges

Choo,

Varshney,

Liu

et al. 2024

Sci. Adv.

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Motivated by the growing demand to integrate functional oxides with dissimilar materials, numerous studies have been undertaken to detach a functional oxide film from its original substrate, effectively forming a membrane, which can then be affixed to the desired host material. This review article is centered on the synthesis of functional oxide membranes, encompassing various approaches to their synthesis, exfoliation, and transfer techniques. First, we explore the characteristics of thin-film growth techniques with emphasis on molecular beam epitaxy. We then examine the fundamental principles and pivotal factors underlying three key approaches of creating membranes: (i) chemical lift-off, (ii) the two-dimensional layer–assisted lift-off, and (iii) spalling. We review the methods of exfoliation and transfer for each approach. Last, we provide an outlook into the future of oxide membranes, highlighting their applications and emerging properties.

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From oxide epitaxy to freestanding membranes: Opportunities and challenges

Choo,

Varshney,

Liu

et al. 2024

Sci. Adv.

View full text Add to dashboard Cite

show abstract

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Epitaxially grown single-crystalline SrTiO₃ membranes using a solution-processed, amorphous SrCa₂Al₂O₆ sacrificial layer

Abstract: Water-soluble sacrificial layers based on epitaxially-grown, single crystalline (Ca, Sr, Ba)3Al2O6 layer are widely used for creating free-standing perovskite oxide membranes. However, obtaining these sacrificial layers with intricate stoichiometry remains...

Cited by 1 publication

References 42 publications

From oxide epitaxy to freestanding membranes: Opportunities and challenges

From oxide epitaxy to freestanding membranes: Opportunities and challenges

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