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Affichage de 81 à 90 sur 16551

  • Article dans une revue

Effect of metal/semiconductor interface on the resistance of a nonalloyed p-GaN/Ni–Au contact

Jules Duraz, Hassen Souissi, Maksym Gromovyi, David Troadec, Téo Baptiste, Géraldine Hallais, Nathaniel Findling, Phuong Vuong, Rajat Gujrati, Thi May Tran, Jean-Paul Salvestrini, Maria Tchernycheva, Suresh Sundaram, Abdallah Ougazzaden, Gilles Patriarche, Sophie Bouchoule

The formation of an ohmic p-contact represents a critical step in the processing of GaN-based devices such as light-emitting diodes (LEDs). Thermal annealing in an O2-containing atmosphere at high temperature of a GaN/Ni–Au contact is mostly used today, while nonannealed contacts have been reported...

Journal of Vacuum Science & Technology B Microelectronics and Nanometer Structures, 2026, 44 (5), pp.052208. ⟨10.1116/6.0005634⟩. ⟨hal-05751075⟩

  • Article dans une revue

Strain- and confinement-induced topological phases in noncentrosymmetric wurtzite HgTe

Antoine Hage, Jing Li, Christophe Delerue

While three-dimensional Dirac semimetals have been extensively studied in centrosymmetric materials such as Cd3As2 and Na3Bi , the recent colloidal synthesis of wurtzite HgTe (wz-HgTe) opens new opportunities for exploring topological quantum phases in noncentrosymmetric systems. Building on recent...

Physical Review Research, 2026, 8 (3), pp.033323. ⟨10.1103/5pj7-34v4⟩. ⟨hal-05754313⟩

  • Article dans une revue

Improving the efficiency and stability of solar cells based on the perovskite material CH3NH3Pb(I1-yCly)3

Kacim Hadjadj, Abdelkader Aissat, Madani Mohamed Alaa Edine, Samuel Dupont

In this paper, the physical and optical properties of the perovskite material CH3NH3Pb(I1-yCly)3 have been modeled, simulated, and optimized to enhance the efficiency and stability of the proposed solar cell. First, the effect of y on the Eg and absorption coefficient at room temperature was...

Solar Energy, 2026, 316, pp.114870. ⟨10.1016/j.solener.2026.114870⟩. ⟨hal-05705526⟩

  • Article dans une revue

Colocalized photonic and phononic topological edge states in silicon membrane structures

Nouh Krai, Gaëtan Lévêque, Bahram Djafari-Rouhani, Yan Pennec

Topological wave transport has become an important area of research in photonic and phononic systems, providing new insights into wave propagation and enabling promising technological applications. Although photons and phonons share common features in periodic media, they are fundamentally...

Physical Review Applied, 2026, 26 (2), pp.024071. ⟨10.1103/s457-7wbk⟩. ⟨hal-05742883⟩

  • Rapport

Technical Report NF-PERSEUS 2024

Charbel Abdel Nour, Cedric Adjih, Anis Hamzah Amazig, Karine Amis, Xavier Bégaud, Rim Berro, Jean-Pierre Cances, Sylvain Collardey, Matthieu Crussière, Mounir Dabouz, Christophe Delaveaud, David Demmer, Joseph Doumit, Marco Di Renzo, Catherine Douillard, Antoine Durant, Hajar El Hassani, Joumana Farah, Davy Gaillot, Alexandre Giry, Claire Goursaud, Maxime Guillaud, Fatima Hamdar, Mohamed Yassine Hentati, Raneem Jafaar, Anne-Claire Lepage, Didier Le Ruyet, Asma Mabrouk, Valérian Mannoni, Vahid Meghdadi, Jérémy Nadal, Nhu-Huan Nguyen, Pascal Pagani, Germain Dang-Kien Pham, Romain Piron, Balakrishna Prabhu, Ala Sharaiha, Eric Pierre Simon, Pascal Xavier

<div><p>This is the second deliverable D2 "Technical Report NF-PERSEUS 2024". This document provides an overview of the progress of the studies undertaken in NF-PERSEUS project and their progress by the end of 2024.</p><p>Chapter 1 delves into the advantages of...

ANR (Agence Nationale de la Recherche - France). 2026. ⟨cea-05725397⟩

  • Article dans une revue

Assessment of AlGaN channel high-electron mobility transistors on silicon for high-temperature power electronics

Julien Bassaler, Jash Mehta, Stéphanie Rennesson, Fabrice Semond, Sylvie Contreras, Julien Pernot, Yvon Cordier, Farid Medjdoub, Philippe Ferrandis

Wide and ultrawide bandgap semiconductors present novel opportunities for advancing power electronics, particularly in domains where high-voltage operation and elevated temperature stability are required. In this context, AlGaN/AlGaN heterostructures emerge as promising candidates due to their...

Applied Physics Letters, 2026, 129 (8), pp.083506. ⟨10.1063/5.0326014⟩. ⟨hal-05742914⟩

  • Rapport

Technical Report NF-PERSEUS 2025

Abdel Charbel, David Demmer, Marco Di Renzo, Catherine Douillard, Joumana Farah, Davy Gaillot, Alexandre Giry, Claire Goursaud, Marco Guzzo, Anne-Claire Lepage, Nhu Huan Nguyen, Cédric Adjih, Karine Amis, Myriam Ariaudo, Xavier Begaud, Rim Berro, Jean-Pierre Cances, Sylvain Collardey, Matthieu Crussière, Christophe Delavaud, Paul Desombre, Antoine Durant, Maxime Guillaud, Mohamed Yassine Hentati, Raneem Jaafar, Didier Le Ruyet, Mabrouk Asma, Valerian Mannoni, Ghiles Medrar, Vahid Meghdadi, Dang-Kièn Germain Pham, Charly Poulliat, Balakrishna Prabhu, Ghaya Rekaya, Florian Requena, Eric Pierre Simon, Tan-Phu Vuong, Pascal Xavier

<div><p>This deliverable D3 "Technical Report NF-PERSEUS 2025" provides an overview of the scientific and technological progress achieved within the NF-PERSEUS project during 2025. It covers the main research activities conducted across the project, from use cases and channel...

D3, Agence Nationale de la Recherche. 2026. ⟨cea-05722893⟩

  • Article dans une revue

A Unified Configurational Framework for Interface and Bulk Defects in Eshelbian Linear Elasticity

Salvatore Di Stefano, Claudia Binetti, Giuseppe Puglisi, Stefano Giordano

Within the framework of Eshelbian mechanics and linear elasticity, we develop a kinematic and energetic formulation for treating different classes of defects. Central to the approach is a defect map, through which interface discontinuities and bulk material inhomogeneities are described within a...

Journal of Elasticity, 2026, 158 (3), pp.46. ⟨10.1007/s10659-026-10222-3⟩. ⟨hal-05760008⟩

  • Article dans une revue

Prediction of High-Performance Donor–Acceptor Pairs for Organic Photovoltaics with Machine Learning

Esther Mbina, Bruno Grandidier, Kekeli N’konou

<div xmlns="http://www.tei-c.org/ns/1.0"><p>Organic solar cells are widely recognized for their flexibility, light weight and semitransparency, all relevant for niche applications. A significant challenge in their development lies in the accurate prediction of their power...

Solar, 2026, 6, ⟨10.3390/solar6040051⟩. ⟨hal-05737593⟩

  • Article dans une revue

Chamfer-engineered microcantilever probes for controlled electrical contact formation

Steve Arscott

<div><p>In miniature silicon-based microcantilever probes used for high-frequency on-wafer electrical measurements, microfabrication processes such as etching can produce sharp probe-tip edges and poorly controlled contacting geometries. During electrical contact formation, such...

Engineering Research Express, 2026, 8, pp.155353. ⟨10.1088/2631-8695/ae9511⟩. ⟨hal-05729816⟩