Explanipedia

Patterns and determinants of plant- and microbial-derived carbon in alpine peatlands Open

Mengjie Liu, Quancheng Wang, Li Yang, Ronglei Zhou, Junxiao Pan , et al. · 2025

Peatlands store approximately one-third of global soil organic carbon (SOC) and clarifying SOC sources is essential to assess soil C formation and stability in these C-rich ecosystems. However, large-scale patterns and drivers of plant- an…

Electric Field Distribution within a Van der Waals Heterostructure Open

Dario Mastrippolito, Mariarosa Cavallo, Erwan Bossavit, Clément Gureghian, Albin Colle , et al. · 2025

Van der Waals heterostructures offer a playground for optoelectronics with the promise of coupling a broad range of materials while lifting the constraints of epitaxy. Optimization of such devices also requires careful control of the spati…

HgTe Nanocrystals Carrier Density and Its Tuning Open

Mariarosa Cavallo, Dario Mastrippolito, Clément Gureghian, Erwan Bossavit, Huichen Zhang , et al. · 2025

HgTe nanocrystals (NCs) are now an established material for colloidal optoelectronics. In the mid‐ and far‐infrared range, there is to date no viable colloidal alternative material that can emit or detect light with such a high efficiency.…

Graphene as Infrared and Electron Transparent Electrode Applied to the Design of Narrow Bandgap Nanocrystal‐Based Photodiode Open

Dario Mastrippolito, Albin Colle, Clément Gureghian, Tommaso Gemo, Adrien Khalili , et al. · 2025

Colloidal nanocrystals (NCs) are a promising platform for infrared optoelectronics. Current efforts focus on designing NCs that absorb in the short‐ and mid‐wave infrared and integrating them into diode stacks. A major challenge is to coup…

Enhancing the Infrared Emission from Silver Chalcogenide Quantum Dots Through Microcavity Coupling (Advanced Optical Materials 10/2025) Open

Lina Makké, Erwan Bossavit, Dario Mastrippolito, Andrei Shcherbakov, Mariarosa Cavallo , et al. · 2025

Operando Photoemission Imaging of the Energy Landscape from a 2D Material-Based Field-Effect Transistor Open

Dario Mastrippolito, Mariarosa Cavallo, Daniel Borowski, Erwan Bossavit, Clément Gureghian , et al. · 2025

As the integration of transition metal dichalcogenides (TMDC) becomes more advanced for optoelectronics, it is increasingly relevant to develop tools that can correlate the structural properties of the materials with their electrical outpu…

Enhancing the Infrared Emission from Silver Chalcogenide Quantum Dots Through Microcavity Coupling Open

Lina Makké, Erwan Bossavit, Dario Mastrippolito, Andrei Shcherbakov, Mariarosa Cavallo , et al. · 2025

Nanocrystals (NCs) appear as a promising platform for cost effective infrared optoelectronics, while offering a simplified coupling to the CMOS platform. However, this perspective is slowed down by toxicity concerns, the most effective mat…

Tuning Electronic Properties of II–VI and III–V Narrow Band Gap Nanocrystals through Exposure to Alkali Open

Dario Mastrippolito, Mariarosa Cavallo, Houman Bahmani Jalali, Guncem Ozgun Eren, Erwan Bossavit , et al. · 2024

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Genetic algorithm driven optimization of a guided mode resonator coupled to an infrared nanocrystal film Open

Claire Abadie, Nicolas Ledos, Ye Mou, Mariarosa Cavallo, Erwan Bossavit , et al. · 2024

Nanocrystal (NC)-based devices suffer from a trade-off between absorption, pushing for thicker films, and charge conduction that is only efficient over a few NC sizes. Therefore, the design of detectors based on NCs strongly benefits from …

Operando investigation of nanocrystal-based device energy landscape: Seeing the current pathway Open

Mariarosa Cavallo, Dario Mastrippolito, Erwan Bossavit, Leonardo Curti, Adrien Khalili , et al. · 2024

International audience

Designing Rules for an Efficient Metallic Mid-Infrared Transparent Electrode Dedicated to Nanocrystal-Based Devices Open

Tung Huu Dang, Mariarosa Cavallo, Adrien Khalili, Erwan Bossavit, Huichen Zhang , et al. · 2024

International audience

Shaping the Infrared luminescence of Colloidal Nanocrystals Using a Dielectric Microcavity Open

Erwan Bossavit, Huichen Zhang, Nicolas Ledos, Mariarosa Cavallo, Dario Mastrippolito , et al. · 2024

As they have gained maturity, colloidal nanocrystals (NCs) have also expand the spectral range over of which they could be used for photonic and optoelectronic applications. In particular, the infrared use of NCs has become of utmost inter…

Stop Blaming Hopping Conduction in Nanocrystal Arrays, Use it for Active Photonics! (Adv. Mater. Technol. 6/2024) Open

Nicolas Ledos, Tung Huu Dang, Mariarosa Cavallo, Huichen Zhang, Erwan Bossavit , et al. · 2024

Infrared Imaging using thermally stable HgTe/CdS nanocrystals Open

Huichen Zhang, Yoann Prado, Rodolphe Alchaar, Henri Lehouelleur, Mariarosa Cavallo , et al. · 2024

Transferring the nanocrystals (NCs) from the laboratory environment toward practical applications has raised new challenges. In the case of NCs for display and lightning, the focus was on reduced Auger recombination and maintaining lumines…

Photoemission Insight on Narrow Band Gap PbS Quantum Dots Relevant for Infrared Imaging Open

Huichen Zhang, Nicolas Ledos, Mariarosa Cavallo, Erwan Bossavit, Adrien Khalili , et al. · 2024

International audience

Stop Blaming Hopping Conduction in Nanocrystal Arrays, Use it for Active Photonics! Open

Nicolas Ledos, Tung Huu Dang, Mariarosa Cavallo, Huichen Zhang, Erwan Bossavit , et al. · 2024

Nanocrystals (NCs) are now established building blocks for photonic applications. However, their integration for optoelectronics has not yet reached the same level of maturity, in part due to the perceived bottleneck that is the inherent l…

Fluid dynamics simulation on water lubricating performance of micro-/nano-textured surfaces considering roughness structures Open

Jianfa Gu, Ting Zheng, Mingjin Guo, Dongsheng Xia, Huichen Zhang · 2024

With the development of surface precision machining technology and extensive studies on lubrication and friction reduction, the use of surface texture to reduce friction has attracted widespread attention, but few studies have considered t…

Optimal Strategies for Manufacturers with Different Online Distribution Modes in Green E-Commerce Supply Chains Open

Xiaoya Han, Huichen Zhang, Xin Liu · 2024

Using wafer scale ferroelectric domains of LiNbO3 to form permanent planar <i>p</i>–<i>n</i> junction in narrow band gap nanocrystals Open

Mariarosa Cavallo, Ankita Ram, Satakshi Pandey, Thomas Maroutian, Erwan Bossavit , et al. · 2023

p–n junctions based on nanocrystals now serve as fundamental components in optoelectronics. However, the process of designing these p–n junctions has largely relied on empirical choices, either for ligand exchange or for the selection of c…

Multiresonant Grating to Replace Transparent Conductive Oxide Electrode for Bias Selected Filtering of Infrared Photoresponse Open

Tung Huu Dang, Mariarosa Cavallo, Adrien Khalili, Corentin Dabard, Erwan Bossavit , et al. · 2023

Optoelectronic devices rely on conductive layers as electrodes, but they usually introduce optical losses that are detrimental to the device performances. While the use of transparent conductive oxides is established in the visible region,…

Plasmon‐Assisted Directional Infrared Photoluminescence of HgTe Nanocrystals Open

Erwan Bossavit, Tung Huu Dang, Puyuan He, Mariarosa Cavallo, Adrien Khalili , et al. · 2023

HgTe nanocrystals offer a unique spectral tunability with both absorption and emission covering the near and mid‐infrared as well as the THz window. Nevertheless, a very limited amount of work is dedicated to electroluminescence from this …

Focal plane array based on HgTe nanocrystals with photovoltaic operation in the short-wave infrared Open

Rodolphe Alchaar, Adrien Khalili, Nicolas Ledos, Tung Huu Dang, Maxime Lebreton , et al. · 2023

Thanks to their remarkable spectral tunability across the entire infrared range, HgTe nanocrystals present a unique platform for designing infrared optoelectronic devices. While in recent years most of the significant advances in this doma…

In Situ Mapping of the Vectorial Electric Field within a Nanocrystal-Based Focal Plane Array Using Photoemission Microscopy Open

Adrien Khalili, Mariarosa Cavallo, Erwan Bossavit, Rodolphe Alchaar, Tung Huu Dang , et al. · 2023

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Electroluminescence and Plasmon-Assisted Directional Photoluminescence from 2D HgTe Nanoplatelets Open

Corentin Dabard, Erwan Bossavit, Tung Huu Dang, Nicolas Ledos, Mariarosa Cavallo , et al. · 2023

In the visible range, 2D nanoplatelets (NPLs) have brought significant benefits compared to their 0D counterpart with an inherently anisotropic emission, a narrower photoluminescence (PL) signal, and new degrees of freedom to design hetero…

On the Suitable Choice of Metal for HgTe Nanocrystal-Based Photodiode: To Amalgam or Not to Amalgam Open

Rodolphe Alchaar, Corentin Dabard, Dario Mastrippolito, Erwan Bossavit, Tung Huu Dang , et al. · 2023

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Coupling Ferroelectric to colloidal Nanocrystals as a Generic Strategy to Engineer the Carrier Density Landscape Open

Mariarosa Cavallo, Erwan Bossavit, Sylvia Matzen, Thomas Maroutian, Rodolphe Alchaar , et al. · 2023

The design of infrared nanocrystals‐based (NCs) photodiodes faces a major challenge related to the identification of barriers with a well‐suited band alignment or strategy to finely control the carrier density. Here, this study explores a …

Bias Reconfigurable Photoresponse of an Infrared Nanocrystal Film Integrated into a Coupled Fabry-Perot Resonator Open

Tung Huu Dang, Claire Abadie, Audrey Chu, Mariarosa Cavallo, Adrien Khalili , et al. · 2023

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Lithium-Ion Glass Gating of HgTe Nanocrystal Film with Designed Light-Matter Coupling Open

Stefano Pierini, Claire Abadie, Tung Huu Dang, Adrien Khalili, Huichen Zhang , et al. · 2023

Nanocrystals’ (NCs) band gap can be easily tuned over the infrared range, making them appealing for the design of cost-effective sensors. Though their growth has reached a high level of maturity, their doping remains a poorly controlled pa…

Mid-wave infrared sensitized InGaAs using intraband transition in doped colloidal II–VI nanocrystals Open

Adrien Khalili, Mariarosa Cavallo, Tung Huu Dang, Corentin Dabard, Huichen Zhang , et al. · 2023

Narrow bandgap nanocrystals (NCs) are now used as infrared light absorbers, making them competitors to epitaxially grown semiconductors. However, these two types of materials could benefit from one another. While bulk materials are more ef…

Visible and Infrared Nanocrystal-Based Light Modulator with CMOS Compatible Bias Operation Open

Huichen Zhang, Victor Guilloux, Erwan Bossavit, Ningyuan Fu, Corentin Dabard , et al. · 2023

Nanocrystals are now established light sources, and as synthesis and device integration have gained maturity, new functionalities can now be considered. So far, the emitted light from a nanocrystal population remains mostly driven by the s…

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