Publications

• COMM

Combinaison d'une polarisation élevée et d'une forte tenue en tension pour les transistors AlN/GaN sur Si

Nicolas Herbecq, Isabelle Roch-Jeune, F Medjdoub

Nous avons réalisé un transistor à double hétérostructure AlN/GaN/AlGaN sur substrat Silicium (111) combinant une tension de claquage élevée et une faible résistance à l'état passant avec une épaisseur totale de buffer de l'ordre de 2μm. Une technique de gravure locale du substrat a été…

17èmes Journées Nationales du Réseau Doctoral en Micro-Nanoélectronique, JNRDM 2014, 2014, Villeneuve d'Ascq, France. 4 p. ⟨hal-01018416⟩

• COMM

InxGa1-xN/GaN MQWs heterostructures for solar cells applications

Ezgi Dogmus, Ludovic Largeau, Nathalie Rolland, F Medjdoub

The high quality and high indium content InxGa1-xN/GaN (x~ 0.10 and x~0.30) multiple quantum wells (MQWs) grown on sapphire (0001) by metal-organic chemical vapor deposition (MOCVD) were investigated by High Angle Annular Dark Field Scanning Transmission Electron Microscopy (HAADF-STEM), Energy…

38th Workshop on Compound Semiconductor Devices and Integrated Circuits in Europe, WOCSDICE 2014, 2014, Delphi, Greece. 2 p. ⟨hal-01006446⟩

• COMM

Memristive devices : an interconnect solution for matrix-based architectures ?

Sébastien Le Beux, F. Alibart, Dominique Vuillaume, Catherine Dubourdieu, Ian O'Connor

European Materials Research Society Spring Meeting, E-MRS Spring 2014, Symposium S - Memristormaterials, mechanisms and devices for unconventional computing, 2014, Lille, France. ⟨hal-00957794⟩

• ART

Mercury telluride colloidal quantum dots : electronic structure, size-dependent spectra, and photocurrent detection up to 12 µm

Sean E. Keuleyan, Philippe Guyot-Sionnest, Christophe Delerue, Guy Allan

HgTe colloidal quantum dots are synthesized with high monodispersivity with sizes up to ∼15 nm corresponding to a room temperature absorption edge at ∼5 μm. The shape is tetrahedral for larger sizes and up to five peaks are seen in the absorption spectra with a clear size dependence. The size range…

ACS Nano, 2014, 8, pp.8676-8682. ⟨10.1021/nn503805h⟩. ⟨hal-01063878⟩

• ART

Impacts of bioremediation schemes for the mitigation of a low-dose anthracene contamination on free-living marine benthic nematodes

Haithem Louati, O. Ben Said, A. Soltani, Cristiana Cravo-Laureau, Hugues Preud'Homme, Robert Duran, P. Aïssa, E. Mahmoudi, O. Pringault

A microcosm experiment was used to examine (1) the effects of different bioremediation schemes on degradation of anthracene and the structure of free-living marine nematodes in a lightly contaminated (4.5 μg g -1) sediment from Bizerte lagoon and (2) the responses of the nematode community upon an…

Ecotoxicology, 2014, 23 (2), pp.201-212. ⟨10.1007/s10646-013-1163-9⟩. ⟨hal-01560342⟩

• ART

Multilayer magnetostrictive structure based surface acoustic wave devices

Huan Zhou, Abdelkrim Talbi, Nicolas Tiercelin, Olivier Bou Matar

This study addresses the experimental and theoretical investigations of guided elastic waves propagation in piezo-magnetic multi-layered structure. The structure is composed of a 20 TbCo2(5nm)/ FeCo(5nm) nanostructured multi-layer deposited between two Aluminum (Al) Inter-Digitals Transducers…

Applied Physics Letters, 2014, 104, 114101, 4 p. ⟨10.1063/1.4868530⟩. ⟨hal-00961379⟩

• ART

Effect of passivation on microwave power performances of AlGaN/GaN/Si HEMTs

H. Mosbahi, M. Charfeddine, M. Gassoumi, H. Mejri, Christophe Gaquière, Bertrand Grimbert, M.A. Zaidi, H. Maaref

This paper reports on the use of plasma assisted molecular beam epitaxy of AlGaN/GaN high electron mobility transistors (HEMTs) grown on silicon substrate. Surface passivation effects on AlGaN/GaN HEMTs were studied using SiO2/SiN dielectric layers grown by plasma enhanced chemical vapor deposition…

Sensors & Transducers., 2014, 27, pp.277-279. ⟨hal-01005128⟩

• ART

F center in lithium fluoride revisited : comparison of solid-state physics and quantum-chemistry approaches

Ferenc Karsai, Paul Tiwald, Robert Laskowski, Fabien Tran, David Koller, Stefanie Gräfe, Joachim Burgdörfer, Ludger Wirtz, Peter Blaha

We revisit the theoretical description of the F color center in lithium fluoride employing advanced complementary ab initio techniques. We compare the results from periodic supercell calculations involving density-functional theory (DFT) and post-DFT techniques with those from the embedded-cluster…

Physical Review B: Condensed Matter and Materials Physics (1998-2015), 2014, 89, 125429, 12 p. ⟨10.1103/PhysRevB.89.125429⟩. ⟨hal-00968483⟩

• ART

Enhancing LSPR sensitivity of Au gratings through graphene coupling to Au film

Thomas Maurer, Rana Nicolas, Gaëtan Lévêque, P. Subramanian, Julien Proust, Jérémie Béal, Silvere Schuermans, Jean-Pierre Vilcot, Z. Herro, M. Kazan, Jerome Plain, Rabah Boukherroub, Abdellatif Akjouj, Bahram Djafari-Rouhani, Pierre-Michel Adam, Sabine Szunerits

A particular interesting plasmonic system is that of metallic nanostructures interacting with metal films. As the localized surface plasmon resonance (LSPR) behavior of gold nanostructures (Au NPs) on the top of a gold thin film is exquisitely sensitive to the spacer distance of the film-Au NPs, we…

Plasmonics, 2014, 9, pp.507-512. ⟨10.1007/s11468-013-9649-0⟩. ⟨hal-00994804⟩

• ART

Blind digital modulation identification for time-selective MIMO channels

Sofiane Kharbech, Iyad Dayoub, Marie Zwingelstein, Eric Pierre Simon, Kais Hassan

This paper addresses the problem of blind digital modulation identification in time-selective Multiple-Input Multiple-Output channels. Our objective is to recognize modulation schemes in highly-mobile communication environments, for military or high-speed railway applications, without signal…

IEEE Wireless Communications Letters, 2014, 3 (4), pp.373-376. ⟨10.1109/LWC.2014.2318041⟩. ⟨hal-00986897⟩