Titanium dioxide thin films deposited by pulsed laser deposition and integration in radio frequency devices: Study of structure, optical and dielectric properties
In: Applied Surface Science Applied Surface Science, Elsevier, 2012, 263, pp.111-114. ⟨10.1016/j.apsusc.2012.09.010⟩; (2012)
Online
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Zugriff:
International audience; Titanium dioxide presents a wide range of technological application possibilities due to its dielectric, electrochemical, photocatalytic and optical properties. The three TiO2 allotropic forms: anatase, rutile and brookite are also interesting, since they exhibit different properties, stabilities and growth modes. For instance, rutile has a high dielectric permittivity, of particular interest for the integration as dielectric in components such as microelectromechanical systems (MEMS) for radio frequency (RF) devices. In this study, titanium dioxide thin films are deposited by pulsed laser deposition. Characterizations by Raman spectroscopy and X-ray diffraction show the evolution of the structural properties. Thin films optical properties are investigated using spectroscopic ellipsometry and transmission measurements from UV to IR range. Co-planar waveguide (CPW) devices are fabricated based on these films. Their performances are measured in the RF domain and compared to simulation, leading to relative permittivity values in the range 30-120, showing the potentialities of the deposited material for capacitive switches applications.
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Titanium dioxide thin films deposited by pulsed laser deposition and integration in radio frequency devices: Study of structure, optical and dielectric properties
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Autor/in / Beteiligte Person: | Orlianges, Jean-Christophe ; Pothier, Arnaud ; Crunteanu, Aurelian ; Blondy, Pierre ; Merle-Méjean, Thérèse ; Champeaux, Corinne ; Axe 2 : procédés de traitements de surface ; Science des Procédés Céramiques et de Traitements de Surface (SPCTS) ; Université de Limoges (UNILIM)-Ecole Nationale Supérieure de Céramique Industrielle (ENSCI)-Institut des Procédés Appliqués aux Matériaux (IPAM) ; Université de Limoges (UNILIM)-Université de Limoges (UNILIM)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Université de Limoges (UNILIM)-Ecole Nationale Supérieure de Céramique Industrielle (ENSCI)-Institut des Procédés Appliqués aux Matériaux (IPAM) ; Université de Limoges (UNILIM)-Université de Limoges (UNILIM)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS) ; (XLIM-MINACOM), MINACOM ; (XLIM), XLIM ; Université de Limoges (UNILIM)-Centre National de la Recherche Scientifique (CNRS)-Université de Limoges (UNILIM)-Centre National de la Recherche Scientifique (CNRS) ; Axe 3 : organisation structurale multiéchelle des matériaux (SPCTS-AXE3) |
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Quelle: | Applied Surface Science Applied Surface Science, Elsevier, 2012, 263, pp.111-114. ⟨10.1016/j.apsusc.2012.09.010⟩; (2012) |
Veröffentlichung: | HAL CCSD, 2012 |
Medientyp: | unknown |
ISSN: | 0169-4332 (print) |
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