Publications

• 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⟩

• 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⟩

• Ouvrages

An Intellectual History of Science in the Renaissance. Cultural and Fundamental Frameworks. Vol. 1

Raffaele Pisano

Springer, In press. ⟨hal-04859393⟩

• Communication dans un congrès

PEPR ADICT: Fabrication of RF switches based on MoS$_2$ and WS$_2$

J. Fadel, S. Skrzypczak, Y. Bousbaa, L. Le Van-Jodin, M. Jamet, P. Trousset, B. Reig, B. Dlubak, P. Seneor, E. Carré, X. Wallart, E. Pallecchi, H. Happy

In the framework of the ADICT project, the partner IEMN-CARBON aims to produce components based on 2D materials [1-3], for targeted PEPR projects. The aim is to extract their electrical properties and propose applications for high-frequency analogue electronics. The first components to be explored…

Journées scientifiques du PEPR électronique, Mar 2025, Paris, France. ⟨hal-05010227⟩

• Article dans une revue

Drying Behavior of Flax Stems at Different Degrees of Dew Retting Under Simulated Rainfall: Implications for Smart Agriculture and Sensor Development

Ali Reda, Lionel Buchaillot, Steve Arscott

Dew retting of flax stems is a key agricultural process which facilitates fiber extraction from parent stems. If sensors are to be developed to monitor the degree of retting for optimal fiber extraction, then stem characteristics such as water uptake and loss need to be accurately known. Here, the…

Agriculture, 2025, 15 (4), pp.395. ⟨10.3390/agriculture15040395⟩. ⟨hal-04960263⟩

• Communication dans un congrès

COMPTERA : Ultra-fast quantum-well mid-infrared photodetectors: time-resolved photocurrent and optical saturation by femtosecond laser excitation

Victor Merupo, Djamal Gacemi, P. Balla, Jean-Francois Lampin, Carlo Sirtori, Emilien Peytavit, Stefano Barbieri

Journées scientifiques du PEPR électronique, Mar 2025, Paris, France. ⟨hal-05158427⟩

• Communication dans un congrès

Ondes élastiques topologiquement guidées pour l'haptique de surface

Massaï Hatoumva, Charles Croënne, Bertrand Dubus, Arthur Paté, M. Miniaci, Florian Allein, Frédéric Giraud

<div><p>Les cristaux phononiques topologiques marquent une avancée majeure pour le guidage et le contrôle des ondes élastiques en permettant la synthèse des modes localisés spécifiques (états de bords). Si les propriétés de ces modes font actuellement l'objet de nombreuses études,…

17e Congrès Français d'Acoustique, Société Française d'Acoustique, Apr 2025, Paris, France. ⟨hal-05362771⟩

• Article dans une revue

100 Gbit/s and Beyond IEEE 802.15.3d Channelization Compatible THz Communications Enabled by a Broadband MUTC Photodiode

Ezgi Abacıoğlu, Abdu Subahan Mohammed, Jonas Tebart, Marcel Grzeslo, Tom Neerfeld, José Luis Fernández Estévez, Pascal Szriftgiser, Guillaume Ducournau, Andreas Stöhr

We present photonics-driven high data rate IEEE 802.15.3d compliant terahertz (THz) communication links operated at a center frequency of 280 GHz. We analyze wireless data transmission within selected single and dual channels of the IEEE 802.15.3d and assess the outcomes through additional back-to-…

IEEE Transactions on Terahertz Science and Technology, 2025, 15 (3), pp.389 - 399. ⟨10.1109/TTHZ.2025.3541824⟩. ⟨hal-04963122⟩