Publications

• Article dans une revue

Characteristics of the surface microstructures in thick InGaN layers on GaN

Y. El Gmili, G. Orsal, K. Pantzas, A. Ahaitouf, T. Moudakir, S. Gautier, G. Patriarche, David Troadec, Jean-Paul Salvestrini, A. Ougazzaden

This paper focuses on a comparative study of optical, morphological, microstructural and microcompositional properties of typical InGaN samples which exhibit V-defects but also two additional surface defects features, referred to as inclusion#1 (Ic1) and inclusion#2 (Ic2). HR-XRD, AFM, SEM, STEM…

Optical Materials Express, 2013, 3, pp.1111-1118. ⟨10.1364/OME.3.001111⟩. ⟨hal-00815384⟩

• Chapitre d'ouvrage

Electrochemical detection

T. Houssin, V. Senez

Bridle H. Waterborne pathogens - Detection methods and applications, Academic Press/Elsevier, chapter 6, 151-192, 2013, 978-0-444-59543-0. ⟨hal-00878470⟩

• Article dans une revue

Effect of surface passivation by SiN/SiO2 of AlGaN/GaN high-electron mobility transistors on Si substrate by deep level transient spectroscopy method

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

Semiconductors, 2013, 47, pp.1002-1005. ⟨hal-00806585⟩

• Article dans une revue

Inhomogeneous Si-doping of gold-seeded InAs nanowires grown by molecular beam epitaxy

C. Rolland, P. Caroff, Christophe Coinon, X. Wallart, R. Leturcq

Applied Physics Letters, 2013, 102, pp.223105-1-4. ⟨10.1063/1.4809576⟩. ⟨hal-00871968⟩

• Communication dans un congrès

Phase Coded Costas Signals for Ambiguity Function Improvement and Grating lobes Suppression

Nadjah Touati, Charles Tatkeu, Thierry Chonavel, Atika Rivenq

In this paper, a novel radar signal is proposed. It is based on a modification of Costas signals obtained by increasing the frequency separation of Costas frequency hops beyond the orthogonality condition. Indeed, Costas codes are well known for their good Range-Doppler properties. Their…

VTC 2013 Fall : IEEE Vehicular Technology Conference (VTC Fall), Sep 2013, Las Vegas, France. 5p. ⟨hal-00918275⟩

• Article dans une revue

Leakage current, capacitance hysteresis and deep traps in Al0.25Ga0.75N/GaN/SiC high-electron-mobility transistors

S. Saadaoui, M.M. Ben Salem, O. Fathallah, M. Gassoumi, Christophe Gaquière, H. Maaref

Physica B: Condensed Matter, 2013, 412, pp.126-129. ⟨10.1016/j.physb.2012.11.031⟩. ⟨hal-00796437⟩

• Article dans une revue

GaAs Fabry-Perot cavity photoconductors : switching with picojoule optical pulses

Emilien Peytavit, S. Formont, Jean-Francois Lampin

Electronics Letters, 2013, 49, pp.207-208. ⟨10.1049/el.2012.3993⟩. ⟨hal-00796471⟩

• Article dans une revue

Modeling of high contrast partially electroded resonators by means of a polynomial approach

P.M. Rabotovao, F.E. Ratolojanahary, Jean-Etienne Lefebvre, A. Raherison, L. Elmaimouni, Tadeusz Gryba, J.G. Yu

Journal of Applied Physics, 2013, 114 (12), pp.124502. ⟨10.1063/1.4821768⟩. ⟨hal-00877665⟩

• Article dans une revue

In situ high-temperature characterization of AlN-based surface acoustic wave devices

T. Aubert, Jochen Bardong, Ouarda Legrani, O. Elmazria, M. Badreddine Assouar, Gudrun Bruckner, Abdelkrim Talbi

We report on in situ electrical measurements of surface acoustic wave delay lines based on AlN/sapphire structure and iridium interdigital transducers between 20 °C and 1050 °C under vacuum conditions. The devices show a great potential for temperature sensing applications. Burnout is only observed…

Journal of Applied Physics, 2013, 114 (1), pp.014505. ⟨10.1063/1.4812565⟩. ⟨hal-00871910⟩

• Article dans une revue

Contribution of the buffer layer to the Raman spectrum of epitaxial graphene on SiC(0001)

F. Fromm, M.H. Oliveira, A. Molina-Sanchez, M. Hundhausen, J.M.J. Lopes, H. Riechert, L. Wirtz, T. Seyller

We report a Raman study of the so-called buffer layer with (6√3 × 6√3)R30◦ periodicity which forms the intrinsic interface structure between epitaxial graphene and SiC(0001). We show that this interface structure leads to a nonvanishing signal in the Raman spectrum at frequencies in the range of…

New Journal of Physics, 2013, 15, pp.043031-1-11. ⟨10.1088/1367-2630/15/4/043031⟩. ⟨hal-00823434⟩