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Naji, M. |
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Motta, Antonella |
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Aletan, Dirar |
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Mohamed, Tarek |
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Ertürk, Emre |
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Taccardi, Nicola |
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Kononenko, Denys |
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Petrov, R. H. | Madrid |
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Alshaaer, Mazen | Brussels |
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Bih, L. |
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Casati, R. |
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Muller, Hermance |
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Kočí, Jan | Prague |
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Šuljagić, Marija |
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Kalteremidou, Kalliopi-Artemi | Brussels |
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Azam, Siraj |
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Ospanova, Alyiya |
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Blanpain, Bart |
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Ali, M. A. |
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Popa, V. |
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Rančić, M. |
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Ollier, Nadège |
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Azevedo, Nuno Monteiro |
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Landes, Michael |
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Rignanese, Gian-Marco |
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Astié, Vincent
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (6/6 displayed)
- 2024Determining by Raman spectroscopy the average thickness and N -layer-specific surface coverages of MoS 2 thin films with domains much smaller than the laser spot sizecitations
- 2024Optimizing YSZ Electrolyte Deposition via MOCVD for Enhanced Thin Film Solid Oxide Cells ; Optimisation de la déposition d'electrolyte de YSZ par MOCVD pour des cellules à oxydes solides en couche mince performantes
- 2024Integration of epitaxial LiNbO3 thin films with silicon technologycitations
- 2024Direct liquid injection pulsed-pressure MOCVD of large area MoS 2 on Si/SiO 2citations
- 2023Conductive TiN thin films grown by plasma- enhanced atomic layer deposition: Effects of N-sources and thermal treatmentscitations
- 2018Towards stoichiometric LiNbO3 epitaxial thin films grown by DLI-MOCVD
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article
Integration of epitaxial LiNbO3 thin films with silicon technology
Abstract
International audience ; Development of bulk acoustic wave filters with ultra-wide passbands and operating at high frequencies for 5th and 6th generation telecommunication applications and micro-scale actuators, energy harvesters and sensors requires lead-free piezoelectric thin films with high electromechanical coupling and compatible with Si technology. In this paper, the epitaxial growth of 36°Y-X and 30°X-Y LiNbO3 films by direct liquid injection chemical vapor deposition on Si substrates by using epitaxial SrTiO3 layer, grown by molecular beam epitaxy, has been demonstrated. The stability of the interfaces and chemical interactions between SrTiO3, LiNbO3 and Si were studied experimentally and by thermodynamical calculations. The experimental conditions for pure 36°Y-X orientation growth have been optimized. The piezoelectricity of epitaxial 36°Y-LiNbO3/SrTiO3/Si films was confirmed by means of piezoelectric force microscopy measurements and the ferroelectric domain inversion was attained at 85 kV.cm-1 as expected for the nearly stoichiometric LiNbO3. According to the theoretical calculations, 36°Y-X LiNbO3 films on Si could offer an electromechanical coupling of 24.4% for thickness extension excitation of bulk acoustic waves and a comparable figure of merit of actuators and vibrational energy harvesters to that of standard PbZr1-xTixO3 films.