Publications

• Article dans une revue

Inhibition of interface pollution in AlGaN/GaN HEMT structures regrown on semi-insulating GaN templates

M. Azize, Z. Bougrioua, P. Gibart

AlGaN/GaN high-electron mobility transistors (HEMTs) structures regrown by metalorganic vapour phase epitaxy (MOVPE) on semi-insulating (SI) GaN templates, after exposure to air, results in the presence of parasitic conducting channels at regrowth interface. Air contamination of the SI GaN…

Journal of Crystal Growth, 2007, 299 (1), pp.103-108. ⟨10.1016/j.jcrysgro.2006.10.250⟩. ⟨hal-02906690⟩

• Article dans une revue

Low-Operating-Voltage Organic Transistors Made of Bifunctional Self-Assembled Monolayers

M. Mottaghi, P. Lang, F. Rodriguez, Anna Rumyantseva, Abderrahim Yassar, G. Horowitz, S. Lenfant, D. Tondelier, D. Vuillaume

Self-assembled monolayers (SAMs) are molecular assemblies that spontaneously form on an appropriate substrate dipped into a solution of an active surfactant in an organic solvent. Organic field-effect transistors are described, built on an SAM made of bifunctional molecules comprising a short alkyl…

Advanced Functional Materials, 2007, 17 (4), pp.597-604. ⟨10.1002/adfm.200600179⟩. ⟨hal-00826656⟩

• Article dans une revue

Critical temperatures of 70%Pb(Mg1∕3Nb2∕3)O3–30%PbTiO3 thin films investigated by dielectric, ferroelectric, and structural measurements

X.J. Meng, Denis Remiens, Mickael Detalle, B. Dkhil, Jl. Sun, Jh. Chu

The authors have investigated the temperature dependence of the ferroelectric, dielectric, and structural properties of 70%Pb(Mg1∕3Nb2∕3)O3–30%PbTiO3 thin films. Two critical temperatures were evidenced. The first one occurring around 410K corresponds to the bulk paraelectric-ferroelectric phase…

Applied Physics Letters, 2007, 90 (13), pp.132904. ⟨10.1063/1.2716312⟩. ⟨hal-00176457⟩

• Article dans une revue

Integrated terahertz TEM horn antenna

Emilien Peytavit, Jean-Francois Lampin, Tahsin Akalin, L. Desplanque

A terahertz transverse electromagnetic horn antenna (THz-TEMHA) monolithically integrated on a gallium arsenide substrate has been studied by means of subpicosecond pulses generated and measured on a 50 Ω coplanar waveguide. The measured reflection coefficient is below −10 dB from 100 GHz to about…

Electronics Letters, 2007, 43 (2), pp.73-75. ⟨10.1049/el:20073679⟩. ⟨hal-00255785⟩

• Article dans une revue

Emission characteristics of ion-irradiated In0.53Ga0.47As based photoconductive antennas excited at 1.55 mu m

J. Mangeney, N. Chimot, L. Meignien, N. Zerounian, P. Crozat, K. Blary, Jean-Francois Lampin, P. Mounaix

no abstract

Optics Express, 2007, 15 (14), pp.8943-8950. ⟨hal-01553014⟩

• Communication dans un congrès

Comparison of the Benefits, From SiO2 to Ultralow-K Dielectric and Air Spacing Introduction, in Term of Interconnects Performances, for the Future High Speed Ic's in a Multicoupled Lines System

Freddy Ponchel, Jean-François Legier, Erick Paleczny, Christophe Seguinot, Denis Deschacht

11th IEEE Workshop on Signal Propagation on Interconnects, SPI 2007, May 2007, Genova, Italy. pp.24-28, ⟨10.1109/SPI.2007.4512199⟩. ⟨lirmm-00148905⟩

• Article dans une revue

Comparison between the dynamic performance of double- and single-gate AlInAs/InGaAs HEMTs

B.G. Vasallo, Nicolas Wichmann, S. Bollaert, Yannick Roelens, A. Cappy, T. Gonzalez, D. Pardo, J. Mateos

IEEE Transactions on Electron Devices, 2007, 54, pp.2815-2822. ⟨10.1109/TED.2007.907801⟩. ⟨hal-00255757⟩

• Article dans une revue

A blind modulation type detector for DPRS standard

Iyad Dayoub, A. Okassa-M'Foubat, R. Mvone, Jean-Michel Rouvaen

Wireless Personal Communications, 2007, 41, pp.225-241. ⟨10.1007/s11277-006-9140-8⟩. ⟨hal-00283515⟩

• Article dans une revue

Composition and size-dependent extinction coefficient of colloidal PbSe quantum dots

Iwan Moreels, Karel Lambert, David de Muynck, Frank Vanhaecke, Dirk Poelman, José C Martins, Guy Allan, Zeger Hens

Inductively coupled plasma mass spectrometry (ICP-MS) was combined with UV–vis−NIR spectrophotometry and transmission electron microscopy to determine the nanocrystal composition and molar extinction coefficient ϵ of colloidal PbSe quantum dot (Q-PbSe) suspensions. The ICP-MS results show a…

Chemistry of Materials, 2007, 19, pp.6101-6106. ⟨10.1021/cm071410q⟩. ⟨hal-00283128⟩

• Article dans une revue

Communication entre véhicules de transport guidé fondée sur la technologie radio ultra large bande

F. Elbahhar, Atika Rivenq, M. Heddebaut, J.P. Ghys, Jean-Michel Rouvaen

RTS. Recherche, transports, sécurité, 2007, 24, pp.115-128. ⟨hal-00285682⟩