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

A 360 degrees BST phase shifter with moderate bias voltage at 30 GHz

Gabriel Vélu, Karine Blary, Ludovic Burgnies, Aurélien Marteau, Gregory Houzet, Didier Lippens, Jean-Claude Carru

Paraelectric BaSrTiO 3 films deposited by sol-gel have been investigated from 1 kHz to 40 GHz using coplanar waveguides, resonators, and inter-digitated capacitances. At room temperature and without bias, the dielectric constant epsiv r is around 300 and the loss tangent is 5times10 -2 . Tunability…

IEEE Transactions on Microwave Theory and Techniques, 2007, 55, pp.438-444. ⟨10.1109/TMTT.2006.889319⟩. ⟨hal-00255772⟩

• Communication dans un congrès

Guidage, filtrage et démultiplexage dans le domaine sub-longueur d'onde

Abdellatif Akjouj, Yan Pennec, Bahram Djafari-Rouhani, L. Dobrzynski, R. Fikri, J.P. Vigneron

Actes de TELECOM'2007 & 5èmes Journées Franco-Maghrébines des Micro-ondes et leurs Applications, 2007, Fès, Maroc. ⟨hal-00367412⟩

• Communication dans un congrès

Réalisation de structures passives pour matrices de commutation haute diaphotie sur InP

N. Choueib, Malek Zegaoui, Joseph Harari, S. Mc Murtry, Jean Chazelas, Didier Decoster

TELECOM'2007 & 5èmes Journées Franco-Maghrébines des Micro-ondes et leurs Applications, 2007, Fès, Maroc. ⟨hal-00285264⟩

• Article dans une revue

Strong generation of coherent acoustic phonons in semiconductor quantum dots

Arnaud Devos, F. Poinsotte, Jesse Groenen, O. Dehaese, N. Bertru, Anne Ponchet

Physical Review Letters, 2007, 98, pp.207402-1-4. ⟨10.1103/PhysRevLett.98.207402⟩. ⟨hal-00255740⟩

• Communication dans un congrès

Nouvelles architectures d'échantillonneurs entrelacés pour des systèmes à haute résolution et à large bande passante

B. Gorisse, H. El Aabbaoui, N. Rolland, P.A. Rolland

15èmes Journées Nationales Microondes, JNM 2007, 2007, France. pp.4D5-14. ⟨hal-00370309⟩

• Communication dans un congrès

Echantillonneur-bloqueur ultra large bande [DC-20 GHz] en technologie DHBT sur InP

H. El Aabbaoui, B. Gorisse, N. Rolland, A. Benlarbi-Delaï, N. Fel, V. Allouche, P. Leclerc, B. Riondet, P.A. Rolland

15èmes Journées Nationales Microondes, JNM 2007, 2007, France. pp.1E15-1-4. ⟨hal-00370311⟩