International Conference Piezoresponse Force Microscopy and Nanoscale Phenomena in Polar Materials – PFM 2014, 2014, Ekaterinburg, Russia. ⟨hal-01702958⟩

Article dans une revue

Young's modulus extraction of epitaxial heterostructure AlGaN/GaN for MEMS application

Achraf Ben Amar, Marc Faucher, Virginie Brandli, Yvon Cordier, Didier Theron

This paper presents a Young's modulus extraction method for thin film group III-nitrides materials such as GaN, AlN, and its ternary AlGaN. The AlGaN/GaN heterostructures are grown by molecular beam epitaxy on Si (111) substrate and designed for MEMS applications. Various cantilevers with a…

physica status solidi (a), 2014, 211, pp.1655-1659. ⟨10.1002/pssa.201330339⟩. ⟨hal-01044844⟩

Article dans une revue

Silicon-microtube scaffold decorated with anatase TiO2 as a negative electrode for a 3D litium-ion microbattery

Etienne Eustache, Pascal Tilmant, Laurence Morgenroth, Pascal Roussel, Gilles Patriarche, David Troadec, Nathalie Rolland, Thierry Brousse, Christophe Lethien

An optimized scaffold based on silicon microtubes is designed to increase the surface capacity of 3D lithium-ion microbatteries. High-depth, mechanically robust microstructures are fabricated using microelectronic facilities. Conformal deposition of anatase TiO2 is achieved using atomic layer…

Advanced Energy Materials, 2014, 4, 1301612, 11 p. ⟨10.1002/aenm.201301612⟩. ⟨hal-00999999⟩

Article dans une revue

Enhancement of energy storage in epitaxial PbZrO3 antiferroelectric films using strain engineering

Jun Ge, Denis Remiens, Xianlin Dong, Ying Chen, Jean Costecalde, Feng Gao, Fei Cao, Genshui Wang

We demonstrate an approach to enhance the energy storage density W of antiferroelectric film through simple altering a crystallographic orientation of the substrate. We reveal that the antiferroelectric phase stability of PbZrO3 can be enhanced for the (110) or (111) SrTiO3 substrate orientation,…

Applied Physics Letters, 2014, 105 (11), pp.112908. ⟨10.1063/1.4896156⟩. ⟨hal-03525829⟩

Communication dans un congrès

Développement de matériaux hybrides par voie sol-gel limitant l'endommagement laser

F. Compoint, C. Ambard, H. Piombini, P. Belleville, K. Valle, Carmen Navarro Sanchez, P. Ruello, Marc Duquennoy

Journées SOL-GEL 2014, 2014, Tours, France. ⟨hal-00996834⟩

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Interface dipole : effects on threshold voltage and mobility for both amorphous and poly-crystalline organic field effect transistors

C. Celle, C. Suspène, M. Ternisien, S. Lenfant, David Guérin, K. Smaali, K. Lmimouni, J.P. Simonato, Dominique Vuillaume

We report a detailed comparison on the role of a self-assembled monolayer (SAM) of dipolar molecules on the threshold voltage and charge carrier mobility of organic field-effect transistor (OFET) made of both amorphous and polycrystalline organic semiconductors. We show that the same relationship…

Organic Electronics, 2014, 15, pp.729-737. ⟨10.1016/j.orgel.2014.01.003⟩. ⟨hal-00939052⟩

Article dans une revue

Disorder-perturbed Landau levels in high-electron-mobility epitaxial graphene

Simon Maëro, Abderrezak Torche, Thanyanan Phuphachong, Emiliano Pallecchi, Abdelkarim Ouerghi, Robson Ferreira, Louis-Anne de Vaulchier, Yves Guldner

We show that the Landau levels in epitaxial graphene in the presence of localized defects are significantly modified compared to those of an ideal system. We report on magnetospectroscopy experiments performed on high-quality samples. Besides typical interband magneto-optical transitions, we…

Physical Review B: Condensed Matter and Materials Physics (1998-2015), 2014, 90, pp.195433. ⟨hal-01156613⟩