Publications

• Communication dans un congrès

Enhanced efficiency by the effect of strain on the structure of a solar cell

Abdelkader Aissat, Rachid Bestam, M. El Bey, Jean-Pierre Vilcot

This paper is expected at the study of Ga1-xInxP/GaAs based solar cell. The effects of indium concentration, lattice parameter mismatch and thickness of the SiO2 insulating layer on the characteristics and efficiency of the Ga1-xInxP/GaAs structure were investigated. We noticed that for higher…

International Conference on Technologies and Materials for Renewable Energy, Environment and Sustainability, TMREES14, 2014, Beirut, Lebanon. pp.817-823, ⟨10.1016/j.egypro.2014.06.100⟩. ⟨hal-01055040⟩

• Article dans une revue

Cross-talk artefacts in Kelvin probe force microscopy imaging : a comprehensive study

Sophie Barbet, Michka Popoff, Heinrich Diesinger, D. Deresmes, Didier Theron, Thierry Melin

We provide in this article a comprehensive study of the role of ac cross-talk effects in Kelvin Probe Force Microscopy (KPFM), and their consequences onto KPFM imaging. The dependence of KPFM signals upon internal parameters such as the cantilever excitation frequency and the projection angle of…

Journal of Applied Physics, 2014, 115 (14), pp.144313. ⟨10.1063/1.4870710⟩. ⟨hal-00981142⟩

• Communication dans un congrès

Monitoring conductance switching by light in azobenzene derivative-gold nano-particle self-assembled networks

Yannick Viero, Stéphane Lenfant, David Guérin, Dominique Vuillaume

European Materials Research Society Spring Meeting, E-MRS Spring 2014, Symposium M - Molecular materials - Towards quantum properties (MOLMAT-Q), 2014, Lille, France. ⟨hal-00957796⟩

• Article dans une revue

Dispersion characteristic of ultrathin terahertz planar lenses based on metasurface

Dan Hu, Gabriel Moreno, Xinke Wang, Jingwen He, Abdallah Chahadih, Zhenwei Xie, Bo Wang, Tahsin Akalin, Yan Zhang

Terahertz (THz) radiation has attached a lot of attention due to its potential applications. The smart optical components will greatly boost the application of the THz technology. Ultrathin planar lenses which can greatly reduce the thickness of the components are designed and fabricated in the THz…

Optics Communications, 2014, 322, pp.164-168. ⟨10.1016/j.optcom.2014.02.017⟩. ⟨hal-00961382⟩

• Communication dans un congrès

Optical and microstructural properties into nanoporous GaN films grown on sapphire by metal organic chemical vapor deposition

Bandar Alshehri, S.-M. Lee, J.-H. Kang, Karim Dogheche, S.-H. Gong, S.-W. Ryu, E. Dumont, Y.-H. Cho, El Hadj Dogheche

Gallium Nitride (GaN) thin films have been prepared on sapphire by metal organic chemical vapor deposition (MOCVD) technique and a chemical etching method using KOH is used to develop nanoporous structures [1]. We present comparative investigations of porous and nonporous GaN layers. While the…

European Materials Research Society Spring Meeting, E-MRS Spring 2014, Symposium K - Challenges for group III nitride semiconductors for solid state lighting and beyond, 2014, Lille, France. ⟨hal-00961412⟩

• Article dans une revue

Dielectric relaxation analysis of Pb(Zr_0.54,Ti_0.46)O₃ thin films: electric field dependence

Freddy Ponchel, N. Sama, Denis Remiens, T. Lasri

350 nm-thick Perovskite PbZr0.54Ti0.46O3 (PZT) thin films were deposited on Al2O3 substrates by sputtering with and without an additional 10-nm-thick TiOx buffer layer. X-ray diffraction patterns showed that in presence of TiOx buffer layer, PZT film was highly oriented along the (111) direction…

• Autre publication scientifique

Etude de la cinétique des décharges et post-décharges excitées à hautes et très hautes fréquences dans les mélanges azotés

Adriana Annusova

Ce travail porte sur l'étude de la cinétique des décharges et post-décharges dans l'azote et les mélanges azotés en écoulement à pressions modérées. Des travaux de modélisations cinétiques ont été effectués sur la base des résultats expérimentaux afin de comprendre les processus de…

2014. ⟨hal-01044810⟩

• Communication dans un congrès

[Invited] Surface science of semiconductor nanowires

B. Grandidier

International Nano-Optoelectronic Workshop, iNOW 2014, 2014, St. Petersburg, Russia. ⟨hal-01044671⟩

• Communication dans un congrès

[Invited] High frequency electronic devices : impact of beyond graphene materials

Henri Happy, D. Mele, Ivy Colambo, Mohamed Salah Khenissa, Mohamed Moez Belhaj, Emiliano Pallecchi, Abdelkarim Ouerghi, Dominique Vignaud, Gilles Dambrine

Considering graphene field effect transistors (GFETs), considerable efforts have been made during the recent years to reach impressive current gain cut-off frequency (ft) over 400 GHz. Unfortunately, for these devices, the maximum frequency of oscillation (fmax) remains under 100GHz. This deviation…

62nd IEEE MTT-S International Microwave Symposium, IMS 2014, Workshop WFK - Beyond Graphene Electronic Devices and their Potential for High-Frequency Applications, 2014, Tampa, FL, United States. ⟨hal-01044773⟩

• Article dans une revue

A MIMO random channel generator for indoor power-line communication

Kassim Khalil, Marc G. Gazalet, Patrick Corlay, François-Xavier Coudoux, M Gharbi

Multiple-input multiple-output (MIMO) technology has already been used in power-line communication (PLC). An accurate description of MIMO channels for PLC network topologies is of great interest and importance in the development and testing of digital communication algorithms. However, the…

IEEE Transactions on Power Delivery, 2014, 29 (4), pp.1561-1568. ⟨10.1109/TPWRD.2014.2331078⟩. ⟨hal-01044804⟩