Publications

• Article dans une revue

Optimized V-shape design of GaN nanodiodes for the generation of Gunn oscillations

J.F. Millithaler, I. Iniguez-De-La-Torre, A. Iniguez-De-La-Torre, T. Gonz Alez, P. Sangaré, Guillaume Ducournau, Christophe Gaquière, J. Mateos

In this work, recent advances in the design of GaN planar Gunn diodes with asymmetric shape, socalled self-switching diodes, are presented. A particular geometry for the nanodiode is proposed, referred as V-shape, where the width of the channel is intentionally increased as approaching the anode.…

Applied Physics Letters, 2014, 104, 073509, 4 p. ⟨10.1063/1.4866166⟩. ⟨hal-00951554⟩

• Communication dans un congrès

Current-voltage characteristics of (Mo/Au)/AlGaN/GaN/Si Schottky diodes

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

The AlGaN/GaN high electron mobility transistors (HEMTs) is a promising candidate for microwave applications due to its high power and high temperature. owing to their large and direct band gap, as well as favorable transport properties. Moreover, III-V nitrides could be suitable for the emitters…

European Materials Research Society Spring Meeting, E-MRS Spring 2014, Symposium X - Materials research for group IV semiconductors : growth, characterization and technological developments, 2014, Lille, France. ⟨hal-00961393⟩

• Article dans une revue

Measurement of the thermal conductivity of polydimethylsiloxane polymer using the three omega method

Nadine Al-Khudary, Pierre-Yves Cresson, Yovan Orlic, Philippe Coquet, Philippe Pernod, T. Lasri

Polydimethylsiloxane (PDMS) has widely appeared in different electronic and medical applications. The knowledge of the thermal properties of PDMS and especially its thermal conductivity is required while processing PDMS to design a particular device. In this paper measurement of the thermal…

Key Engineering Materials, 2014, 613, pp.259-266. ⟨10.4028/www.scientific.net/KEM.613.259⟩. ⟨hal-00992702⟩

• Article dans une revue

Dirac cones, topological edge states, and nontrivial flat bands in two-dimensional semiconductors with a honeycomb nanogeometry

Efterpi Kalesaki, Christophe Delerue, Cristiane Morais Smith, Wouter Beugeling, Guy Allan, Daniel Vanmaekelbergh

We study theoretically two-dimensional single-crystalline sheets of semiconductors that form a honeycomb lattice with a period below 10 nm. These systems could combine the usual semiconductor properties with Dirac bands. Using atomistic tight-binding calculations, we show that both the atomic…

Physical Review X, 2014, 4 (1), pp.0110101. ⟨10.1103/PhysRevX.4.011010⟩. ⟨hal-00939871⟩

• Communication dans un congrès

Fabrication of integrated micrometer platform for thermoelectric measurements

Maciej Haras, V. Lacatena, François Morini, J.F. Robillard, S. Monfray, T. Skotnicki, Emmanuel Dubois

60th Annual IEEE International Electron Devices Meeting (IEDM), Dec 2014, San Francisco, United States. paper 8.5, 8.5.1-8.5.4, ⟨10.1109/IEDM.2014.7047012⟩. ⟨hal-03325009⟩

• Article dans une revue

Contribution to testing for a correlation between ultrasonic parameters and physicochemical properties of a medium

Said Soudani, Z. Derouiche, Belal Alshaqaqi, Georges Nassar

The physicochemical parameters used to characterize the physical and chemical qualities of a medium. An ultrasonic wave through the same medium undergoes a measurable change in these parameters with its ultrasonic characteristics. The purpose of this work is to highlight the close correlation…

International journal on advanced materials and technologies, 2014, 2 (4), pp.96-101. ⟨hal-03560853⟩

• Article dans une revue

Angle-dependent ray tracing simulations of reflections on pyramidal textures for silicon solar cells

Vincent Magnin, Joseph Harari, Mathieu Halbwax, S Bastide, D Cherfi, Jean-Pierre Vilcot

Pyramidal textures are commonly used to reduce reflections from silicon solar cells and improve light absorption by light trapping. They are generally modelled or characterized under normal incidence. In this work, a monolayer 3D ray tracing program taking into account the polarisation of light…

Solar Energy, 2014, 110, pp.378 - 385. ⟨10.1016/j.solener.2014.09.025⟩. ⟨hal-01403918⟩

• Article dans une revue

Improved efficiency by the effect of strain on the structure of a solar cell based on GaInP/GaAs

Abdelkader Aissat, Rachid Bestam, Jean-Pierre Vilcot

This work is aimed at the study of GaInP-based photovoltaic cell. The effects of In content, lattice parameter mismatch and thickness of the SiO2 insulating layer on the characteristics and efficiency of the GaInP structure were investigated. We noticed that for higher In concentrations, the band…

International Journal of Advanced Research in Electrical, Electronics and Instrumentation Engineering, 2014, 3, pp.7038-7046. ⟨hal-00947584⟩

• Article dans une revue

Confinement-modulated junctionless nanowire transistors for logic circuits

François Vaurette, Renaud Leturcq, Sylvie Lepilliet, Bruno Grandidier, Didier Stiévenard

We report the controlled formation of nanoscale constrictions in junctionless nanowire field-effect transistors that efficiently modulate the flow of the current in the nanowire. The constrictions act as potential barriers and the height of the barriers can be selectively tuned by gates, making the…

Nanoscale, 2014, 6 (22), pp.13446-13450. ⟨10.1039/c4nr04047c⟩. ⟨hal-04614113⟩

• Communication dans un congrès

A real-time terahertz beam monitoring application with a 1024-pixel CMOS terahertz camera module

Richard Al Hadi, Jean-Francois Lampin, Ullrich Pfeiffer

In this paper a terahertz beam monitoring application of an optically pumped molecular terahertz laser with a 1024-pixel CMOS terahertz camera is presented. The terahertz camera has been used to detect variations in real-time of the terahertz source beam around 2.52 THz.

Conference on Lasers and Electro-Optics, CLEO 2014, Laser Science to Photonic Applications, 2014, San Jose, CA, United States. ⟨hal-00975794⟩