Publications associées à Electronic transport across quantum dots in graphene nanoribbons: Toward built-in gap-tunable metal-semiconductor-metal heterojunctions

Publications associées (44)

Direct laser writing of electronically conductive microstructures within soft hydrogel substrates

Veronica Navello, Stéphanie Lacour, Esther Amstad, Outman Akouissi, Lorenzo Lucherini

Hydrogels have emerged as promising materials for bioelectronic interfaces due to their tissue-like properties and high-water content. However, conventional hydrogels often suffer from poor electrical conductivity and mechanical stability, limiting their p ...

2025

Gate Driver Power Supply With Low-Capacitance-Coupling and Constant Output Voltage for Medium-Voltage SiC MOSFETs

Rui Wang

With the development of wide band-gap devices, Silicon Carbide (SiC) semiconductor devices in 10 kV–15 kV voltage class offer potentials in medium-voltage (MV) systems. To ensure reliable operation of these MV SiC devices, gate driver power supplies must m ...

2025

Inverse Geometric Locomotion

Mark Pauly, Quentin Christian Becker

Numerous tasks in robotics and character animation involve solving combinations of inverse kinematics and motion planning problems that require the precise design of pose sequences to achieve desired motion objectives. Accounting for the complex interplay ...

2025

Tuning Electronic and Optical Properties of 2D/3D Interfaces of Hybrid Perovskites through Interfacial Charge Transfer: Prediction of Higher-Efficiency Interface Solar Cells Using Hybrid-DFT Methods

Mohammad Khaja Nazeeruddin

The 2D/3D or 2D/quasi-2D composite mixed-dimensional construction of hybrid perovskite interfaces is gaining increasing attention due to their enhanced stability toward degradation without compromising the corresponding solar cell efficiency. Much of this ...

AMER CHEMICAL SOC2025

Visualizing hot carrier dynamics by nonlinear optical spectroscopy at the atomic length scale

Klaus Kern

Probing and manipulating the spatiotemporal dynamics of hot carriers in nanoscale metals is crucial to a plethora of applications ranging from nonlinear nanophotonics to single-molecule photochemistry. The direct investigation of these highly non-equilibri ...

Springer Science and Business Media LLC2025

Corrigendum to “Rapid prediction of phonon density of states by crystal attention graph neural network and high-throughput screening of candidate substrates for wide bandgap electronic cooling” [Mater. Today Phys. 50 (2025) 101632] (Materials Today Physics (2025) 50, (S2542529324003080), (10.1016/j.mtphys.2024.101632))

Changpeng Lin

The authors regret that Figs. 1–3 in the published article were wrongly uploaded when the article was in the proof stage. The correct Figs. 1–3 are now presented in this Corrigendum. The figures shown here are the same ones that were reviewed by the review ...

2025

Efficient Polycrystalline Single-Cation Perovskite Light-Emitting Diodes by Simultaneous Intracrystal and Interfacial Defect Passivation

Mohammad Khaja Nazeeruddin, Emad Oveisi

Polycrystalline perovskite light-emitting diodes (PeLEDs) have shown great promise with high efficiency and easy processability. However, PeLEDs using single-cation polycrystalline perovskite emitters have demonstrated low efficiency due to defects within ...

2025

Towards microwave-to-optical quantum transduction with barium titanate/strontium titanate integrated photonics

Annina Irina Riedhauser

The faithful bidirectional quantum coherent conversion of microwave (5 GHz) and optical (193.5 THz) quantum states will become essential for future quantum networks. Due to their low transition frequency, qubit states are quickly destroyed at room temperat ...

EPFL2025

Thermal Rectification in Telescopic Nanowires: Impact of Thermal Boundary Resistance

Anna Fontcuberta i Morral, Wonjong Kim

A thermal diode, which, by analogy to its electrical counterpart, rectifies heat current, is the building block for thermal circuits. To realize a thermal diode, we demonstrate thermal rectification in a GaAs telescopic nanowire system using the thermal br ...

2025

Buried Hole-selective Interface Engineering for High-efficiency Tin-lead Perovskite Solar Cells with Enhanced Interfacial Chemical Stability

Guixiang Li

Mixed Sn-Pb perovskites are attracting significant attention due to their narrow bandgap and consequent potential for all-perovskite tandem solar cells. However, the conventional hole transport materials can lead to band misalignment or induce degradation ...

ELSEVIER2025

Investigating Non-equilibrium Physics in Wide Bandgap Semiconductors and Quantum Materials via Ultrafast Spectroscopy

Hui-Yuan Chen

This thesis uses femtosecond laser spectroscopy in studying strong correlation in condensed matters that are pertinent to future technology: a wide bandgap perovskite and a quantum material, with the employment of ultrafast time-resolved spectroscopy in th ...

EPFL2024

Introduction and Overview: Chapter 1 of the Special Issue: on the Path to Tokamak Burning Plasma Operation

Ambrogio Fasoli

The International Tokamak Physics Activity (ITPA) has developed a comprehensive overview of the results of its coordinated R&D activities in fusion physics and diagnostics implemented during the past two decades with the aim of developing an improved physi ...

IOP Publishing Ltd2025

Strain relaxation and multidentate anchoring in n-type perovskite transistors and logic circuits

Mohammad Khaja Nazeeruddin, Olga Syzgantseva

The engineering of tin halide perovskites has led to the development of p-type transistors with field-effect mobilities of over 70 cm2 V-1 s-1. However, due to their background hole doping, these perovskites are not suitable for n-type transistors. Ambipol ...

Nature Portfolio2024

On-Surface Synthesis of 1D and 2D Porphyrin Metal-Organic Networks on Ag(100) Tuned by Substrate Temperature

Nataly Zaribeth Herrera Reinoza

The production of single-layer polymer ribbons and sheets composed of fused porphyrin rings, named porphene, an analog to graphene, has been aimed over the years as a promising material for applications. Several attempts to polymerize porphyrin rings have ...

AMER CHEMICAL SOC2025

Persistent enhancement of exciton diffusivity in CsPbBr3 nanocrystal solids

Seryio Saris

In semiconductors, exciton or charge carrier diffusivity is typically described as an inherent material property. Here, we show that the transport of excitons among CsPbBr3 perovskite nanocrystals (NCs) depends markedly on how recently those NCs were occup ...

Amer Assoc Advancement Science2024

Giant Purcell Broadening and Lamb Shift for DNA-Assembled Near-Infrared Quantum Emitters

Christophe Marcel Georges Galland, Sachin Suresh Verlekar

Controlling the light emitted by individual molecules is instrumental to a number of advanced nanotechnologies ranging from super-resolution bioimaging and molecular sensing to quantum nanophotonics. Molecular emission can be tailored by modifying the loca ...

2025

Photothermal spectroscopy on-chip sensor for the measurement of a PMMA film using a silicon nitride micro-ring resonator and an external cavity quantum cascade laser

Simone Iadanza

Laser-based mid-infrared (mid-IR) photothermal spectroscopy (PTS) represents a selective, fast, and sensitive analytical technique. Recent developments in laser design permits the coverage of wider spectral regions in combination with higher power, enablin ...

Walter De Gruyter Gmbh2024

Full Solution Process of a Near-Infrared Light-Emitting Electrochemical Cell Based on Novel Emissive Ruthenium Complexes of 1,10-Phenanthroline-Derived Ligands and a Eutectic Alloy as the Top Electrode

Mohammad Khaja Nazeeruddin

Near-infrared luminescent materials have recently received considerable attention for a large number of applications, including in solid-state lighting, as bioimaging agents, as photovoltaic cells, and in the telecommunication industry. By adding diverse e ...

AMER CHEMICAL SOC2023

The nanoscale impact of individual nonradiative point defects on InGaN/GaN quantum wells

Thomas Fjord Kjaersgaard Weatherley

Today's world depends on optoelectronic devices: light-emitting diodes illuminate our houses and backlight the displays on our gadgets, while laser diodes underpin fibre-optic communication. Such optoelectronic devices rely on crystalline semiconductor het ...

EPFL2023

Selective Growth of van der Waals Heterostructures Enabled by Electron-Beam Irradiation

Aleksandra Radenovic, Michal Daniel Macha

Van der Waals heterostructures (vdWHSs) enable the fabricationof complex electronic devices based on two-dimensional (2D) materials.Ideally, these vdWHSs should be fabricated in a scalable and repeatableway and only in the specific areas of the substrate t ...

AMER CHEMICAL SOC2023