Ionic transport in Samarium doped Ceria free-standing single crystal membrane

Simone Sanna*, Olga Krymskaya, Zhongtao Ma, Salvatore De Angelis, Daniele Di Castro, Roberto Felici, Alessandro Coati, Giuseppe Balestrino, Søren Bredmose Simonsen, Antonello Tebano

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

We present the realization of Samarium Doped Ceria (SDC) free-standing membranes and their structural and ionic transport properties. An epitaxial layer of water-soluble Sr3Al2O6 (SAO) sacrificial layer was deposited onto SrTiO3 (100) oriented single crystal substrate, followed by the deposition of the SDC layer. The free-standing SDC membrane was produced by etching the SAO layer in water. The creation of a 2D free-standing membrane allowed us to determine its transport and structural properties without any possible contribution of the substrate. Moreover, the availability of a thin SDC single crystal free-standing membrane offers the opportunity to tune the electrical properties by applying, for instance, compressive or tensile strain much larger than any substrates can induce by the lattice mismatch. Furthermore, this procedure allows the transfer of the film onto any kind of substrate and complex integrated circuit, i.e. those based on silicon technologies, giving the possibility to realize a new class of complex devices based on oxide ultra-thin films.
Original languageEnglish
Article number101836
JournalMaterialia
Volume30
Number of pages7
ISSN2589-1529
DOIs
Publication statusPublished - 2023

Bibliographical note

This project has received funding from:

• The European Research Council (ERC) under the European Union's Horizon 2020 research and innovation program (grant agreement No 850850)

• Regione Lazio “Lazio Innova”, MATeriali avanzati Riconversione CO2 via adsorbimento su sistemi Larga area di contratto (MATRICOLA) (CUP: B85F21001230005)

Keywords

  • Micro–Solid Oxide electrochemical cells
  • Pulsed Laser Deposition (PLD)
  • Free-standing membrane
  • Samarium doped ceria (SDC)
  • Sacrificial layer

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