Publicaciones

• Article dans une revue

Thermal Enhancement of GaN Schottky Diodes Annealed at 600°C for High Power and High Temperature RF Applications

Beatriz Orfao, Amir Al Abdallah, Hugo Bouillaud, Guillaume Ducournau, Yannick Roelens, Malek Zegaoui, Mohammed Zaknoune

In this paper, we report the investigation of the thermal enhancement and the behavior of GaN Schottky diodes grown by metal organic chemical vapor deposition (MOCVD) on sapphire substrates for RF power applications and their potential to operate under extreme temperature. The Schottky barrier...

Electronics Letters, 2025, 61 (1), pp.e70307. ⟨10.1049/ell2.70307⟩. ⟨hal-05149241⟩

• Article dans une revue

ScAlN/GaN-on-Si (111) HEMTs for RF applications

Seif El Whibi, Nagesh Bhat, Yassine Fouzi, Nicolas Defrance, Jean-Claude de Jaeger, Zahia Bougrioua, Florian Bartoli, Maxime Hugues, Yvon Cordier, Marie Lesecq

ScAlN is a promising barrier material for next generation RF high electron mobility transistors, outperforming AlGaN thanks a higher 2-dimensional electron gas (2DEG) density and a thinner barrier with a lower lattice mismatch with GaN. A sub-10 nm barrier ScAlN/GaN heterostructure, grown by...

Applied Physics Express, 2025, 18 (4), pp.046501. ⟨10.35848/1882-0786/adc5db⟩. ⟨hal-05008937⟩

• Article dans une revue

Topological Berry Antenna on a Silicon Chip for Terahertz Wireless Communication

Sonu Kumar, Ridong Jia, Yi Ji Tan, Thomas Caiwei Tan, Pascal Szriftgiser, G Arun Kumar, Guillaume Ducournau, Arokiaswami Alphones, Ranjan Singh

Nonzero Berry curvature is central to the existence of topological edge states in electronic and photonic valley-Hall systems. While manipulating the Berry curvature in condensed matter systems is challenging, valley-Hall topological photonics offer unprecedented control, where the broken spatial...

Advanced Photonics Research, In press, ⟨10.1002/adpr.202500123⟩. ⟨hal-05131748⟩

• Communication dans un congrès

Imagerie de défauts d’impacts par mesures pompe-sonde dans des plaques en composite

Pierre Goislot, Guillemette Ribay, Emmanuel Moulin, Lynda Chehami

Les matériaux composites sont de plus en plus employés dans l’industrie aéronautique en raison de leurs propriétés avantageuses. Plus légers que les matériaux traditionnels tels que l’aluminium ou l’acier, tout en offrant des performances mécaniques similaires, ils permettent une réduction...

17e Congrès Français d'Acoustique, Société Française d'Acoustique (SFA), Apr 2025, Paris, France. ⟨hal-05365667⟩

• Article dans une revue

High Round-Trip Gain Piezoelectric-Capacitive Hybrid Micromachined Ultrasonic Transducer Based on Anodic Bonding Technology

Yan Wang, Wei-Jiang Xu, Ning Lv, Tao Wu, Jia Zhou, Junyan Ren

In this work, a piezoelectric-capacitive hybrid micromachined ultrasonic transducer (HMUT) with a high round-trip gain was developed to achieve superior pulse-echo imaging performance. Initially, an equivalent circuit model (ECM) and a finite element model (FEM) were constructed to design and...

IEEE Sensors Journal, 2025, pp.1-1. ⟨10.1109/JSEN.2025.3552403⟩. ⟨hal-05042499⟩

• Article dans une revue

Strategies to achieve efficiencies of over 19% for organic solar cells

Xingchi Xiao, Malika Chalh, Zhi Rong Loh, Esther Mbina, Tao Xu, Roger C. Hiorns, Yujia Li, Maloy Das, Kekeli N'Konou, Leonard W T Ng

Organic solar cells are a promising system for generating clean energy. Recent advancements, particularly in non-fullerene acceptors such as Y6 and its derivatives, along with the development of innovative polymer donors, have significantly enhanced the power conversion efficiency of organic solar...

Cell Reports Physical Science, 2025, 6 (1), pp.102390. ⟨10.1016/j.xcrp.2024.102390⟩. ⟨hal-04932307⟩

• Article dans une revue

Co-Effect of pH Control Agent and pH Value on the Physical Properties of ZnO Thin Films Obtained by Chemical Bath Deposition for Potential Application in Dye-Sensitized Solar Cells

Alphonse Déssoudji Gboglo, Mazabalo Baneto, Komlan Segbéya Gadedjisso-Tossou, Ognanmi Ako, Ayayi Claude Ahyi, Muthiah Haris, Muthusamy Senthilkumar, Kekeli N’konou, Bruno Grandidier, Katawoura Beltako, Komi Apélété Amou, Milohum Mikesokpo Dzagli

This study presents the influence of pH control agents and pH value on the physical properties of ZnO thin films obtained by chemical bath deposition. ZnO thin films were synthesized on glass substrates using precursor solutions of different pHs prepared from two bases: sodium hydroxide (NaOH) and...

Surfaces, 2025, 8 (3), pp.46. ⟨10.3390/surfaces8030046⟩. ⟨hal-05313801⟩

• Communication dans un congrès

Integrated Optoelectronic Mixer with a Micromachined Silicon Coplanar Probe for Wideband On-Wafer Testing of Millimeter-Wave and THz Components

S. Islam, L. Kherouz, Victor Merupo, L. Frein, S. Bouhier, Flavie Braud, Christophe Boyaval, Christophe Coinon, J.-F. Lampin, Y Deblock, Sophie Eliet, E. Okada, Sylvie Lepilliet, Q. Fornasiero, G. Di Gioia, G. Loas, S. Arscott, E Peytavit

We present the design and fabrication of a wideband signal analysis probe system for on-wafer testing millimeter-wave and THz electronic components. This probe system is based on the development of an optoelectronic mixer based on a low-temperature-grown GaAs microcavity photoconductor integrated...

2025 50th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz), Aug 2025, Helsinki, Finland. pp.1-2, ⟨10.1109/irmmw-thz61557.2025.11319740⟩. ⟨hal-05489566⟩

• Article dans une revue

Carbon Nanotubes-Based Air-Filled Waveguide for D-Band Applications

Amit Kumar, Ankit Kumar Verma, Rong Tao Jiang, Jian Ping Zou, Chong Wei Tan, Dominique Baillargeat, Stephane Bila, Philippe Coquet, Beng Kang Tay

IEEE Microwave and Wireless Technology Letters, 2025, pp.1-4. ⟨10.1109/LMWT.2025.3635139⟩. ⟨hal-05405208⟩

• Article dans une revue

Leveraging 3GPP Features and Optimization Techniques for 5G NR-V2X Resource Allocation: A Survey

Chaeriah Bin Ali Wael, El Hadj Dogheche, Nasrullah Armi, Agus Subekti, Iyad Dayoub

Cellular Vehicle-to-everything (C-V2X) communication is critical for Intelligent Transportation Systems (ITS), facilitating information exchange among road users and infrastructure. Since its first introduction in rel-15 by 3GPP, 5G NR-V2X features have continued to evolve, aiming to support...

IEEE Open Journal of Intelligent Transportation Systems, 2025, 6, pp.967 - 994. ⟨10.1109/ojits.2025.3584024⟩. ⟨hal-05214987⟩