Publications de Wei Chen | EPFL Graph Search

Federated Reinforcement Learning for Electric Vehicles Charging Control on Distribution Networks

Yuning Jiang, Wei Chen, Xin Liu, Ting Wang

With the growing popularity of electric vehicles (EVs), maintaining power grid stability has become a significant challenge. To address this issue, EV charging control strategies have been developed to manage the switch between vehicle-to-grid (V2G) and gr ...

Ieee-Inst Electrical Electronics Engineers Inc2024

High-Quality Data Enabling Universality of Band Gap Descriptor and Discovery of Photovoltaic Perovskites

Alfredo Pasquarello, Haiyuan Wang, Wei Chen

Extensive machine-learning-assisted research has been dedicated to predicting band gaps for perovskites, driven by their immense potential in photovoltaics. Yet, the effectiveness is often hampered by the lack of high-quality band gap data sets, particular ...

Amer Chemical Soc2024

Over-the-Air Computation via Reconfigurable Intelligent Surface

Yuning Jiang, Wei Chen

Over-the-air computation (AirComp) is a disruptive technique for fast wireless data aggregation in Internet of Things (IoT) networks via exploiting the waveform superposition property of multiple-access channels. However, the performance of AirComp is bott ...

2021

Vertex function compliant with the Ward identity for quasiparticle self-consistent calculations beyond GW

Alfredo Pasquarello, Aleksei Tal, Wei Chen

We extend the quasiparticle self-consistent approach beyond the GW approximation by using a range separated vertex function. The developed approach yields band gaps, dielectric constants, and band positions with an accuracy similar to highest-level electro ...

2021

Electronic Structure of Water from Koopmans-Compliant Functionals

Alfredo Pasquarello, Nicola Marzari, Nicola Colonna, Wei Chen, Ngoc Linh Nguyen

Obtaining a precise theoretical description of the spectral properties of liquid water poses challenges for both molecular dynamics (MD) and electronic structure methods. The lower computational cost of the Koopmans-compliant functionals with respect to Gr ...

2021

Efficient Base-Metal NiMn/TiO2 Catalyst for CO2 Methanation

Andreas Züttel, Emanuele Moioli, Wei Chen

Energy storage solutions are a vital component of the global transition toward renewable energy sources. The power-to-gas (PtG) concept, which stores surplus renewable energy in the form of methane, has therefore become increasingly relevant in recent year ...

2019

Nonempirical hybrid functionals for band gaps of inorganic metal-halide perovskites

Alfredo Pasquarello, Wei Chen, Julia Anna Wiktor, Thomas Bischoff

Nonempirical hybrid functionals are investigated for band-gap predictions of inorganic metal-halide perovskites belonging to the class CsBX3, with B = Ge, Sn, Pb and X = Cl, Br, I. We consider both global and range-separated hybrid functionals and determin ...

2019

Wei Chen

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Federated Reinforcement Learning for Electric Vehicles Charging Control on Distribution Networks

High-Quality Data Enabling Universality of Band Gap Descriptor and Discovery of Photovoltaic Perovskites

Over-the-Air Computation via Reconfigurable Intelligent Surface

Vertex function compliant with the Ward identity for quasiparticle self-consistent calculations beyond GW

Electronic Structure of Water from Koopmans-Compliant Functionals

Efficient Base-Metal NiMn/TiO2 Catalyst for CO2 Methanation

Nonempirical hybrid functionals for band gaps of inorganic metal-halide perovskites

Alignment of Redox Levels at Semiconductor-Water Interfaces

Comment on "Fundamental Resolution of Difficulties in the Theory of Charged Point Defects in Semiconductors"

Nonempirical dielectric-dependent hybrid functional with range separation for semiconductors and insulators

Federated Reinforcement Learning for Electric Vehicles Charging Control on Distribution Networks

High-Quality Data Enabling Universality of Band Gap Descriptor and Discovery of Photovoltaic Perovskites

Vertex function compliant with the Ward identity for quasiparticle self-consistent calculations beyond GW

Over-the-Air Computation via Reconfigurable Intelligent Surface

Nonempirical hybrid functionals for band gaps of inorganic metal-halide perovskites

Efficient Base-Metal NiMn/TiO2 Catalyst for CO2 Methanation

Alignment of Redox Levels at Semiconductor-Water Interfaces

Electronic Structure of Water from Koopmans-Compliant Functionals

Comment on "Fundamental Resolution of Difficulties in the Theory of Charged Point Defects in Semiconductors"

Nonempirical dielectric-dependent hybrid functional with range separation for semiconductors and insulators