Publicaciones

• Article dans une revue

Energy transfer between semiconductor nanocrystals : validity of Förster's theory

Guy Allan, Christophe Delerue

We theoretically study the energy transfer between semiconductor nanocrystals and we calculate the rate of this process in the case of direct-gap (InAs) and indirect-gap (Si) semiconductors. The calculations are based on the tight-binding method that enables us to determine the transfer rate,...

Physical Review B: Condensed Matter and Materials Physics (1998-2015), 2007, 75, pp.195311. ⟨10.1103/PhysRevB.75.195311⟩. ⟨hal-00283123⟩

• Article dans une revue

Ionization energy of donor and acceptor impurities in semiconductor nanowires: importance of dielectric confinement

Mamadou Diarra, Yann-Michel Niquet, Christophe Delerue, Guy Allan

Calculations of the electronic states of donor and acceptor impurities in nanowires show that the ionization energy of the impurities is strongly enhanced with respect to the bulk, above all when the wires are embedded in a material with a low dielectric constant. In free-standing nanowires with...

Physical Review B: Condensed Matter and Materials Physics (1998-2015), 2007, 75, pp.045301. ⟨10.1103/PhysRevB.75.045301⟩. ⟨hal-00283119⟩

• Article dans une revue

Physical study of the dissipated power area in high electron mobility transistors for thermal modelling

Brahim Benbakhti, Michel Rousseau, Jean-Claude de Jaeger

The hot area in power transistors due to the power dissipation is determined from a 2D-hydrodynamic model. The power is calculated everywhere in the device from the knowledge of the physical quantities (current density, electric field). The hot area is determined accurately to be coupled to a...

Microelectronics Journal, 2007, 38 (1), pp.7-13. ⟨10.1016/j.mejo.2006.07.025⟩. ⟨hal-00283492⟩

• Article dans une revue

Evaluation of AllnN/GaN HEMTs on sapphire substrate in microwave, time and temperature domains

F Medjdoub, D. Ducatteau, Christophe Gaquière, J.E. Carlin, M. Gonschorek, E. Feltin, M.A. Py, N. Grandjean, E. Kohn

Electronics Letters, 2007, 43, pp.309-311. ⟨10.1049/el:20073170⟩. ⟨hal-00283497⟩

• Communication dans un congrès

Design of band-stop filters using PZT layer on silicon substrate phononic crystals

Anne-Christine Hladky, Jerome O. Vasseur, Bertrand Dubus, F. Duval, C. Granger, Yan Pennec, Bahram Djafari-Rouhani, B. Morvan

IEEE International Ultrasonics Symposium, 2007, United States. pp.620-623, ⟨10.1109/ULTSYM.2007.161⟩. ⟨hal-00283995⟩

• Article dans une revue

Pre-processing technique for improving estimation of number of paths embedded in noisy observations

A. Nasr, A. Lienard, Pierre Degauque

Electronics Letters, 2007, 43, pp.1443-1445. ⟨10.1049/el:20072773⟩. ⟨hal-00283956⟩

• Article dans une revue

New results with blind time domain equalization for OFDM system

Sid Ahmed Elahmar, Ali Djebbari, Merahi Bouziani, Jean-Michel Rouvaen

The Multicarrier Equalization by Restoration of RedundancY (MERRY) algorithm has been shown to blindly and adaptively shorten a channel to the length of the guard interval in an OFDM system. Most published works on blind Time Domain Equalization (TEQ) convergence analysis are confined to Ts-spaced...

Information Technology Journal, 2007, 6 (2), pp.207-211. ⟨10.3923/itj.2007.207.211⟩. ⟨hal-00283519⟩

• Article dans une revue

Transverse electric/transverse magnetic polarization converter using 1D finite biaxial photonic crystal

Noama Ouchani, Driss Bria, Bahram Djafari-Rouhani, Abdlekarim Nougaoui

Journal of the Optical Society of America. A Optics, Image Science, and Vision, 2007, 24 (9), pp.2710-2718. ⟨10.1364/JOSAA.24.002710⟩. ⟨hal-00283163⟩

• Article dans une revue

All-optical tunability of InGaAsP/InP microdisk resonator by infrared light irradiation

Maxime Beaugeois, Bernard Pinchemel, Mohamed Bouazaoui, Marie Lesecq, Sophie Maricot, Jean-Pierre Vilcot

We report the optical characterization of an InP structure constituted by waveguides coupled to microcavity disk resonators. The lateral waveguide confinement is obtained by deep reactive ion etching through the guiding layer. We demonstrate the possibility of tuning optically the resonance...

Optics Letters, 2007, 32, pp.35-37. ⟨hal-00283080⟩

• Article dans une revue

Comment on 'Sensitivity of surface states to the stack sequences of one-dimensional photonic crystals

Y. El Hassouani, E.H. El Boudouti, H. Aynaou, Bahram Djafari-Rouhani, V.R. Velasco

Comment on 'Sensitivity of surface states to the stack sequences of one-dimensional photonic crystals'. Journal of Optics A: Pure and Applied Optics, 2007, 9, pp.308-313. ⟨10.1088/1464-4258/9/3/N01⟩. ⟨hal-00283125⟩