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Affichage de 6841 à 6850 sur 16064

Article dans une revue

Ferroelectrics based absorbing layers

Jianping Hao, Véronique Sadaune, Ludovic Burgnies, Didier Lippens

We show that ferroelectrics-based periodic structure made of BaSrTiO3 (BST) cubes, arrayed onto a metal plate with a thin dielectric spacer film exhibit a dramatic enhancement of absorbance with value close to unity. The enhancement is found around the Mie magnetic resonance of the Ferroelectrics…

Journal of Applied Physics, 2014, 116 (4), pp.043520. ⟨10.1063/1.4891728⟩. ⟨hal-01055079⟩

Communication dans un congrès

UV and IR laser induced ablation of Al2O3/SiN:H and a-Si:H/SiN:H

T. Schutz-Kuchly, A. Slaoui, J. Zelgowski, A. Bahouka, M. Pawlik, Jean-Pierre Vilcot, E. Delbos, M. Bouttemy, R. Cabal

Experimental work on laser induced ablation of thin Al2O3(20 nm)/SiN:H (70 nm) and a-Si:H (20 nm)/SiN:H (70 nm) stacks acting, respectively, as p-type and n-type silicon surface passivation layers is reported. Results obtained using two different laser sources are compared. The stacks are…

4th Photovoltaic Technical Conference, PVTC 2013, ''Thin Film and Advanced Silicon Solutions 2013'', 2013, Aix-en-Provence, France. 55201, 5 p., ⟨10.1051/epjpv/2013027⟩. ⟨hal-00811798⟩

Communication dans un congrès

InAs/AlGaSb Esaki tunnel diodes grown by selective area epitaxy on GaSb (001) substrate

L. Desplanque, Xianglei Han, Maria Fahed, Vinay K. Chinni, David Troadec, M.-P. Chauvat, Pierre Ruterana, Xavier Wallart

We report on the realization of AlGaSb/InAs Esaki tunnel diodes on GaSb (001) substrate. Selective area molecular beam epitaxy of InAs is used to define the area of the diodes down to submicron dimensions. A peak current density up to 1.3 MA/cm2 is achieved.

26th International Conference on Indium Phosphide and Related Materials, IPRM 2014, Compound Semiconductor Week, CSW 2014, 2014, Montpellier, France. paper Mo-C1-6, 2 p., ⟨10.1109/ICIPRM.2014.6880530⟩. ⟨hal-01059835⟩

Communication dans un congrès

Direct path detection algorithm in multiple input single output configuration for transport applications

Kobenan Ignace Kossonou, Yassin El Hillali, Michael Bocquet, Atika Rivenq, Jamal Assaad

This paper introduces a novel technique that exploits cross-correlation properties of near-orthogonal pseudonoise (PN) codes to estimate the time of arrival of the direct path signal for Multiple Input Single Output (MISO) applications. Indeed, multipath are a source of error in the time…

2014 IEEE International Conference on Ultra-WideBand, ICUWB 2014, Sep 2014, Paris, France. pp.438-443, ⟨10.1109/ICUWB.2014.6959022⟩. ⟨hal-03528685⟩

Communication dans un congrès

Broadband sound attenuation on a periodic array of rectangular profile holes in plate

Rayisa P. Moiseyenko, Yan Pennec, Rémi Marchal, Bernard Bonello, Bahram Djafari-Rouhani

Transmission of acoustic waves through a periodic array of sub-wavelength slits or holes have been studied in several recent works in relation with physical phenomena such as resonant (extraordinary) transmission, broadband sound shielding or acoustic induced transparency (AIT). In this work, we…

SPIE Smart Structures/NDE 2014, Conference 9057 - Active and Passive Smart Structures and Integrated Systems VIII, 2014, San Diego, CA, France. 90571Q, 6 p., ⟨10.1117/12.2044845⟩. ⟨hal-00969103⟩

Chapitre d'ouvrage

Speech communication

Nicolas Côté, Jens Berger

The goal of any speech service is the transmission and/or processing of speech signals. In this chapter we discuss the Quality of Experience (QoE) of speech communication systems, including networks, speech processing applications and terminals. We then give an overview of the methods employed to…

Möller Sebastian, Raake Alexander (Eds.). Quality of experience - Advanced concepts, applications and methods, Springer International Publishing, Part II, chapter 12, 165-177, 2014, T-Labs Series in Telecommunication Services, ISBN 978-3-319-02680-0 ; e-ISBN 978-3-319-02681-7. ⟨10.1007/978-3-319-02681-7_12⟩. ⟨hal-00966229⟩

Autre publication scientifique

Caractérisation par acoustique picoseconde des propriétés mécaniques du PZT déposé en couches minces pour des applications MEMS

Fabrice Casset

Les MEMS sont aujourd'hui une réalité économique et sont d'ores et déjà utilisés dans un grand nombre d'objets de notre quotidien. Ces composants peuvent utiliser un actionnement piézoélectrique, notamment à base de PZT déposé en couches minces, du fait de son fort coefficient…

2014. ⟨hal-00994834⟩

Article dans une revue

Simulation of the metal-semiconductor-metal photodetector based on InGaAs for the photodetection at the wavelength 1.55 µm

M. El Besseghi, Abdelkader Aissat, Didier Decoster

In this paper we present the simulation of Metal-Semiconductor-Metal photodetector (MSM-PD) of interdigitated planar structure based on InAlAs/InGaAs adapted for photodetection at the wavelength 1.55 μm. We use the theoretical models to plot the variations of the dark current, the photocurrent, the…

Optik, 2014, 125, pp.2543-2546. ⟨10.1016/j.ijleo.2013.10.106⟩. ⟨hal-00994799⟩

Article dans une revue

Cascaded Brillouin fibre lasers coupled to unitravelling carrier photodiodes for narrow linewidth terahertz generation

Guillaume Ducournau, Denis Bacquet, P. Szriftgiser, Fabio Pavanello, Emilien Peytavit, Mohamed Zaknoune, Alexandre Beck, Jean-Francois Lampin

Narrow linewidth terahertz (THz) generation using a cascaded Brillouin fibre laser structure and a unitravelling carrier photodiode is investigated. Using two distributed feedback lasers separated by > 1 THz with 1 MHz initial linewidth, the use of the cascaded Brillouin laser greatly increases…

Electronics Letters, 2014, 50 (9), pp.690-691. ⟨10.1049/el.2014.0521⟩. ⟨hal-01044685⟩

Communication dans un congrès

ZnO nanowires and PbS quantum dots for third-generation solar cells

Basma El Zein, Mutalifu Abulikemu, Erkki Alarousu, Omar F. Mohammed, Enrico Traversa, El Hadj Dogheche

Nanowires and quantum dots hold promising potency to enhance the performance of solar cells by improving light absorption, light trapping, exciton generation, and photoexcited-carrier collection. Quantum dot sensitized solar cells consist of three components: semiconductor quantum dots, one…

SPIE Photonics West, OPTO 2014, Conference 8987 - Oxide-based Materials and Devices V, 2014, San Francisco, CA, United States. ⟨hal-00964359⟩