Water-Soluble Sacrificial Layer of Sr<sub>3</sub>Al<sub>2</sub>O<sub>6</sub> for the Synthesis of Free-Standing Doped Ceria and Strontium Titanate
Epitaxial layers of water-soluble Sr<sub>3</sub>Al<sub>2</sub>O<sub>6</sub> were fabricated as sacrificial layers on SrTiO<sub>3</sub> (100) single-crystal substrates using the Pulsed Laser Deposition technique. This approach envisages the possibility...
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2025-02-01
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| author | Simone Sanna Olga Krymskaya Antonello Tebano |
| author_facet | Simone Sanna Olga Krymskaya Antonello Tebano |
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| description | Epitaxial layers of water-soluble Sr<sub>3</sub>Al<sub>2</sub>O<sub>6</sub> were fabricated as sacrificial layers on SrTiO<sub>3</sub> (100) single-crystal substrates using the Pulsed Laser Deposition technique. This approach envisages the possibility of developing a new generation of micro-Solid Oxide Fuel Cells and micro-Solid Oxide Electrochemical Cells for portable energy conversion and storage devices. The sacrificial layer technique offers a pathway to engineering free-standing membranes of electrolytes, cathodes, and anodes with total thicknesses on the order of a few nanometers. Furthermore, the ability to etch the SAO sacrificial layer and transfer ultra-thin oxide films from single-crystal substrates to silicon-based circuits opens possibilities for creating a novel class of mixed electronic and ionic devices with unexplored potential. In this work, we report the growth mechanism and structural characterization of the SAO sacrificial layer. Epitaxial samarium-doped ceria films, grown on SrTiO3 substrates using Sr<sub>3</sub>Al<sub>2</sub>O<sub>6</sub> as a buffer layer, were successfully transferred onto silicon wafers. This demonstration highlights the potential of the sacrificial layer method for integrating high-quality oxide thin films into advanced device architectures, bridging the gap between oxide materials and silicon-based technologies. |
| format | Article |
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| institution | DOAJ |
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| publishDate | 2025-02-01 |
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| spelling | doaj-art-83086010c987430fafcbc7d993689cfc2025-08-20T03:12:12ZengMDPI AGApplied Sciences2076-34172025-02-01154219210.3390/app15042192Water-Soluble Sacrificial Layer of Sr<sub>3</sub>Al<sub>2</sub>O<sub>6</sub> for the Synthesis of Free-Standing Doped Ceria and Strontium TitanateSimone Sanna0Olga Krymskaya1Antonello Tebano2CNR-SPIN, Department of Civil Engineering and Computer Science, University of Rome Tor Vergata, 00133 Rome, ItalyCNR-SPIN, Department of Civil Engineering and Computer Science, University of Rome Tor Vergata, 00133 Rome, ItalyCNR-SPIN, Department of Civil Engineering and Computer Science, University of Rome Tor Vergata, 00133 Rome, ItalyEpitaxial layers of water-soluble Sr<sub>3</sub>Al<sub>2</sub>O<sub>6</sub> were fabricated as sacrificial layers on SrTiO<sub>3</sub> (100) single-crystal substrates using the Pulsed Laser Deposition technique. This approach envisages the possibility of developing a new generation of micro-Solid Oxide Fuel Cells and micro-Solid Oxide Electrochemical Cells for portable energy conversion and storage devices. The sacrificial layer technique offers a pathway to engineering free-standing membranes of electrolytes, cathodes, and anodes with total thicknesses on the order of a few nanometers. Furthermore, the ability to etch the SAO sacrificial layer and transfer ultra-thin oxide films from single-crystal substrates to silicon-based circuits opens possibilities for creating a novel class of mixed electronic and ionic devices with unexplored potential. In this work, we report the growth mechanism and structural characterization of the SAO sacrificial layer. Epitaxial samarium-doped ceria films, grown on SrTiO3 substrates using Sr<sub>3</sub>Al<sub>2</sub>O<sub>6</sub> as a buffer layer, were successfully transferred onto silicon wafers. This demonstration highlights the potential of the sacrificial layer method for integrating high-quality oxide thin films into advanced device architectures, bridging the gap between oxide materials and silicon-based technologies.https://www.mdpi.com/2076-3417/15/4/2192Pulsed Laser Deposition techniquemicro-Solid Oxide Fuel Cellssacrificial layers |
| spellingShingle | Simone Sanna Olga Krymskaya Antonello Tebano Water-Soluble Sacrificial Layer of Sr<sub>3</sub>Al<sub>2</sub>O<sub>6</sub> for the Synthesis of Free-Standing Doped Ceria and Strontium Titanate Applied Sciences Pulsed Laser Deposition technique micro-Solid Oxide Fuel Cells sacrificial layers |
| title | Water-Soluble Sacrificial Layer of Sr<sub>3</sub>Al<sub>2</sub>O<sub>6</sub> for the Synthesis of Free-Standing Doped Ceria and Strontium Titanate |
| title_full | Water-Soluble Sacrificial Layer of Sr<sub>3</sub>Al<sub>2</sub>O<sub>6</sub> for the Synthesis of Free-Standing Doped Ceria and Strontium Titanate |
| title_fullStr | Water-Soluble Sacrificial Layer of Sr<sub>3</sub>Al<sub>2</sub>O<sub>6</sub> for the Synthesis of Free-Standing Doped Ceria and Strontium Titanate |
| title_full_unstemmed | Water-Soluble Sacrificial Layer of Sr<sub>3</sub>Al<sub>2</sub>O<sub>6</sub> for the Synthesis of Free-Standing Doped Ceria and Strontium Titanate |
| title_short | Water-Soluble Sacrificial Layer of Sr<sub>3</sub>Al<sub>2</sub>O<sub>6</sub> for the Synthesis of Free-Standing Doped Ceria and Strontium Titanate |
| title_sort | water soluble sacrificial layer of sr sub 3 sub al sub 2 sub o sub 6 sub for the synthesis of free standing doped ceria and strontium titanate |
| topic | Pulsed Laser Deposition technique micro-Solid Oxide Fuel Cells sacrificial layers |
| url | https://www.mdpi.com/2076-3417/15/4/2192 |
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