Publications associées à Hole-conducting mediator for stable Sb2S3-sensitized photoelectrochemical solar cells

Interfacial engineering through lead binding using crown ethers in perovskite solar cells

Jun Ho Yum, Kevin Sivula, Jiyoun Seo, Jovana Milic, Yeonju Kim

In the domain of perovskite solar cells (PSCs), the imperative to reconcile impressive photovoltaic performance with lead-related issue and environmental stability has driven innovative solutions. This study pioneers an approach that not only rectifies lea ...

Elsevier2024

Durable Perovskite Solar Cells with 24.5% Average Efficiency: The Role of Rigid Conjugated Core in Molecular Semiconductors

Michael Graetzel, Shaik Mohammed Zakeeruddin, Peng Wang, Felix Thomas Eickemeyer, Ming Ren

Efficient and robust n-i-p perovskite solar cells necessitate superior organic hole-transport materials with both mechanical and electronic prowess. Deciphering the structure-property relationship of these materials is crucial for practical perovskite sola ...

Wiley-V C H Verlag Gmbh2024

Transparent Porous Conductive Substrates for Gas-Phase Photoelectrochemical Hydrogen Production

Jun Ho Yum, Kevin Sivula, Linda Lazouni, Loï Charles Carbone, Benjamin Goldman, Rebekah Anne Wells, Simon Nussbaum, Marina Caroline Michèle Caretti, Elizaveta Potapova Mensi, Hannah Elizabeth Johnson, Emeline Cécile Rideau

Gas diffusion electrodes are essential components of common fuel and electrolysis cells but are typically made from graphitic carbon or metallic materials, which do not allow light transmittance and thus limit the development of gas-phase based photoelectr ...

Wiley-V C H Verlag Gmbh2023

A colloidal aqueous electrolyte modulated by oleic acid for durable zinc metal anode

Di Yang, Kangning Zhao, Xu Zhang

Continuous dendrites growth, as well as corrosion and side reactions of Zn metal anode seriously hinder the development of aqueous zinc ion batteries. To address these issues, oleic acid (OA) is dispersed into a 2 M ZnSO4 solution to form a novel colloidal ...

ELSEVIER SCIENCE SA2023

Zn3P2 as an earth-abundant photovoltaic material: from growth to device

Rajrupa Paul

The development of cost-effective and earth-abundant semiconducting materials is imperative for the sustainable deployment of photovoltaic technology. Zinc phosphide (Zn3P2) is a promising candidate for terawatt-scale electricity generation. It has a near- ...

EPFL2023

Investigation and Mitigation of Moisture- and Potential-Induced Degradation Mechanisms of Silicon Heterojunction Solar Cells and Modules

Olatz Arriaga Arruti

Photovoltaic (PV) technology is one of the most promising renewable energy sources. The PV market is dominated by crystalline silicon (c-Si) based technologies, thus ensuring their long-term performance is of paramount importance for manufacturers, investo ...

EPFL2023

Understanding Wavelength-Dependent Synergies between Morphology and Photonic Design in TiO2-Based Solar Powered Redox Cells

Giulia Tagliabue, Jiaming Ma, Kiseok Oh

Solar powered redox cells (SPRCs) are promising for large-scale and long-term storage of solar-energy, particularly when coupled with redox flow batteries (RFBs). While efforts have primarily focused on heterostructure engineering, the potential of synergi ...

AMER CHEMICAL SOC2023

Modeling and assessment of high-temperature photo-electrochemical devices

Ronald Ramiro Gutierrez Perez

In this thesis, the feasibility and performance of photo-driven electrochemical (PEC) devices working at elevated temperatures (T>700 K) is investigated and modeled. In such high-temperature PEC devices, a part of the solar spectrum is used for generating ...

EPFL2022

New metric for carrier selective contacts for silicon heterojunction solar cells

Mathieu Gérard Boccard, Jakub Holovsky

Heterojunction carrier selective contacts for solar cells have gained great attention because of the ability of these contacts to efficiently collect majority carriers while hindering the recombination of minority carriers, thus resulting in the highest re ...

PERGAMON-ELSEVIER SCIENCE LTD2022

Molybdenum oxide as a case study for the diagnosis of carrier selective contacts in silicon heterojunction solar cells

Julie Amandine Dreon

Environmental challenges impose a rapid energy transition. The renewable power capacity is expected to increase by 50% in the next 5 years, and recent scenarios plan that photovoltaics (PV) will be leading the new energy sources. Combining high efficiencie ...

EPFL2022

Unravelling the mechanism of ultrafast photoinduced charge generation in organic and hybrid photovoltaic systems

George Cameron Fish

At the current time, the world as we know it is at a crossroads; there is an urgent need to lower greenhouse gas emissions to limit the global rise in temperature. However, this is at odds with the increasing energy demands of the world's growing populatio ...

EPFL2022

Stabilizing Interface pH by Mixing Electrolytes for High-Performance Aqueous Zn Metal Batteries

Kangning Zhao

Aqueous zinc metal batteries with mild acidic electrolytes are considered promising candidates for large-scale energy storage. However, the Zn anode suffers from severe Zn dendrite growth and side reactions due to the unstable interfacial pH and the absenc ...

WILEY-V C H VERLAG GMBH2022

Integration of thin n-type nc-Si:H layers in the window-multilayer stack of heterojunction solar cells

Christophe Ballif, Mathieu Gérard Boccard, Luca Massimiliano Antognini, Vincent Philippe Paratte, Laurie-Lou Senaud, Julie Amandine Dreon, Corentin Yann Sthioul

N-type nanocrystalline silicon (nc-Si:H(n)) layers are good candidates to improve current and transport properties in heterojunction solar cells. In this work, we perform thickness series alongside PH3 doping series to unravel the desirable characteristics ...

ELSEVIER2022

Ultrafast carrier and quasiparticle dynamics in strongly confined perovskite nanoplatelets

Etienne Christophe Socie

Over the past decade, lead halide perovskites (LHPs) have received considerable attention thanks to their impressive optoelectronic properties. Today, LHP-based devices are one of the most efficient single-junction solar cells, with power-conversion effici ...

EPFL2022

Interfacial engineering for competitive Dye-Sensitized Solar Cells production

Natalie Flores Diaz

Renewable energy deployment and implementation of a circular economy will play a crucial role in decreasing CO2 emissions to meet the target from the Paris agreement. Dye-sensitized solar cells (DSSCs) can be designed in various colors and transparency for ...

EPFL2021

Electrical Losses Mitigation in Silicon Heterojunction Solar Cells

Laurie-Lou Senaud

To overcome the worldwide challenges of climate change, photovoltaics is foreseen to play a significant role in the world electricity production. Nowadays, single junction crystalline silicon (c-Si) based solar cells hold the largest share of the global ph ...

EPFL2021

Understanding the design principles of organic sensitizers for highly efficient dye sensitized solar cells

Marko Stojanovic

The conversion of solar to electrical power has presented itself as a solution to meet the growing energy demand and replace our current fossil fuel dependence, which causes dramatic damages to the environment. At the heart of this challenge lies the perfo ...

EPFL2021

Spray Synthesis of CuFeO2 Photocathodes and In-Operando Assessment of Charge Carrier Recombination

Kevin Sivula, Florian Le Formal, Nestor Guijarro Carratala, Yongpeng Liu, Florent Alexandre Boudoire, Charles Roger Jean Lhermitte

Semiconducting delafossite-phase CuFeO2 is a promising photocathode material for solar-driven hydrogen production given its suitable energy levels and established robustness for photoelectrochemical water reduction. Nevertheless, reported methods for prepa ...

AMER CHEMICAL SOC2021

Influence of Donor Groups on Benzoselenadiazole-Based Dopant-Free Hole Transporting Materials for High Performance Perovskite Solar Cells

Mohammad Khaja Nazeeruddin, Abdullah Abdullah

The designed hole-transporting materials (HTMs) of asymmetric and symmetric benzoselenadiazole based molecules, referred as RSe-CF, RSe-TPA, and RSe-R, were synthesized and employed for improving the charge conduction and performance of mixed-halide (Cs(0. ...

AMER CHEMICAL SOC2021

Towards reproducible lithium-ion battery cycling using liquid-phase transmission electron microscopy

Jing Hou

Electric vehicles (EVs) have gained widespread attention in recent years as the dominant strategy for curbing CO2 emissions through transport electrification. Lithium-ion batteries (LIBs) are currently the most suitable and almost exclusively employed ener ...

EPFL2021