Publications related to Effect of imidazole-based additives on the voltage of dye sensitized solar cells with Cu(II/I) redox mediators

Related publications (18)

De-doping engineering for efficient and heat-stable perovskite solar cells

In conventional n-i-p perovskite solar cells, unsolved issues persist, particularly concerning notorious performance degradation under prolonged heat exposure at 85°C. By reducing the concentration of 4-tert-butylpyridine (tBP) and lithium bis(trifluoromet ...

2025

Dipolar Carbazole Ammonium for Broadened Electric Field Distribution in High-Performance Perovskite Solar Cells

Felix Thomas Eickemeyer, Likai Zheng, Jaeki Jeong

Perovskite solar cells (PSCs) with ammonium passivation exhibit superior device performance and stability. Beyond typical chemical passivation, ammonium salts control the electronic structure of perovskite surfaces, yet the molecular structure-property rel ...

2025

Photoelectrochemical Degradation and Regeneration of Ca2fe2o5 Photocathodes

Kevin Sivula, Maria Isabel Diez Garcia, Benjamin Goldman

Ca2Fe2O5 is a p-type semiconductor with properties suitable for potential application as a photocathode in photoelectrochemical water splitting. However, it suffers from poor stability under working conditions that is still not completely understood. In th ...

ROYAL SOC CHEMISTRY2025

Characterization of Lightweight Polymeric Honeycomb Structures for Use as Backsides in Glass‐Free PV Modules

Christophe Ballif, Antonin Faes, Umang Bhupatrai Desai

In densely populated or mountainous countries where installation of large‐scale solar plants is challenging, photovoltaic (PV) modules in building applications offer a solution by transforming passive surfaces into energy‐generating systems. The need for f ...

Wiley2025

The redox aspects of lithium-ion batteries

Hubert Girault

This article aims to present the redox aspects of lithium-ion batteries both from a thermodynamic and from a conductivity viewpoint. We first recall the basic definitions of the electrochemical potential of the electron, and of the Fermi level for a redox ...

ROYAL SOC CHEMISTRY2024

Experimental and first-principles insights into an enhanced performance of Ru-doped copper phosphate electrocatalyst during oxygen evolution reaction

Mohammad Khaja Nazeeruddin

The OER involves a four-electron transfer and is a kinetically sluggish reaction that requires additional potential to drive. To enhance the electrochemical performance of the above-mentioned applications, highly efficient, corrosion-resistant, earth-abund ...

2024

Ligand-modified nanoparticle surfaces influence CO electroreduction selectivity

Victor Carle Adrien Boureau

Improving the kinetics and selectivity of CO2/CO electroreduction to valuable multi-carbon products is a challenge for science and is a requirement for practical relevance. Here we develop a thiol-modified surface ligand strategy that promotes electrochemi ...

Nature Portfolio2024

Towards Mimicking Brain Mechanical Loads: Stretchable Microelectrode Arrays for Brain Spheroid Electrophysiology

Stéphanie Lacour, Ivan Furfaro, Eleonora Martinelli, Laurine Kolly, Camille Lucette Gabrielle Delgrange

Human neural spheroids, 3D cellular aggregates of neurons and glial cells, are a compelling biological model for studying neuronal communication in physiological and pathological conditions, such as neurodevelopment and traumatic brain injury (TBI), respec ...

FUNDACIO DE LA COMUNITAT VALENCIANA SCITO2024

Method of modifying the structure of perovskite films

Michael Graetzel, Shaik Mohammed Zakeeruddin, Hong Zhang

A method of modifying the structure of a perovskite film prepared on a substrate, wherein an organic or inorganic salt crown ether complex is applied on a free surface of the so-prepared perovskite film. A perovskite solar cell, wherein a perovskite layer ...

2022

High Performance Semiconducting Nanosheets via a Scalable Powder-Based Electrochemical Exfoliation Technique

Kevin Sivula, Aleksandra Radenovic, Victor Carle Adrien Boureau, Miao Zhang, Tzu-Heng Chen

The liquid-phase exfoliation of semiconducting transition metal dichalcogenide (TMD) powders into 2D nanosheets represents a promising route toward the scalable production of ultrathin high-performance optoelectronic devices. However, the harsh conditions ...

2022

Spatial Modulation of Vibrational and Luminescence Properties of Monolayer MoS & x2082; Using a GaAs Nanowire Array

Anna Fontcuberta i Morral, Wonjong Kim, Jean-Baptiste Leran, Mirjana Dimitrievska, Lucas Güniat, Didem Dede, Valerio Piazza, Akshay Balgarkashi

The integration of transition-metal dichalcogenides (TMDs) with non-planar substrates such as nanopillars provides a way to spatially modify the optical properties mainly through the localized strain. Similar studies to date have utilized insulating SiO2 n ...

IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC2022

Interplay of Kinetic and Thermodynamic Reaction Control Explains Incorporation of Dimethylammonium Iodide into CsPbI3

Ursula Röthlisberger, David Lyndon Emsley, Dominik Józef Kubicki, Aditya Mishra, Marko Mladenovic, Mathias Dankl, Ariadni Boziki

CsPbI3 is a promising material for optoelectronics owing to its thermal robustness and favorable bandgap. However, its fabrication is challenging because its photoactive phase is thermodynamically unstable at room temperature. Adding dimethylammonium (DMA) ...

AMER CHEMICAL SOC2022

Atomic doping & coating for Electrocatalysis & Li-ion batteries

Albert Claude Jean-Pierre Daubry

Molybdenum atomic-doping on bio-waste derived nitrogen-doped conductive carbon electrocatalyst was synthesized and investigated for the dinitrogen reduction to ammonia in alkaline media. The assessment of the catalytic activity was found to be non-trivial ...

EPFL2022

Reduction of PdO/Al2O3 in Liquid Cyclohexane Followed In Situ by ATR-IR, High-Energy XRD, and XAS

Oliver Kröcher, Davide Ferri, Thibault Xavier Florian Fovanna

Supported Pd-based catalysts used in heterogeneously catalyzed liquid phase processes often undergo an activation step through reduction of the oxide phase or of the oxidic passivation layer prior to reaction. An oxidized Pd/Al2O3 catalyst was reduced by u ...

AMER CHEMICAL SOC2021

Mapping of Chemical Heterogeneity at Surfaces with High-Throughput Wide-Field Second Harmonic Microscopy

Igor Nahálka

Many industrial processes are based on electrochemical reactions using engineered electrocatalysts. However, the current lack of theoretical knowledge obscures efforts to maximize catalysts' efficiency, and the optimization process is mostly empirical. To ...

EPFL2020

Deciphering the Mechanisms of Bacterial Inactivation on HiPIMS Sputtered CuxO-FeOx-PET Surfaces: From Light Absorption to Catalytic Bacterial Death

Sami Rtimi, Adrien Alexis Paul Chauvet

The production of nontoxic, affordable, and efficient antibacterial surfaces is key to the well-being of our societies. In this aim, antibacterial thin films have been prepared using earth-abundant metals deposited using high-power impulse magnetron sputte ...

2019

Influence of Charge Transport Layers on Open-Circuit Voltage and Hysteresis in Perovskite Solar Cells

Mohammad Khaja Nazeeruddin, Giulia Grancini, Yonghui Lee, Cristina Roldán Carmona, Saba Gharibzadeh

2018

Managing the solar spectrum at sub-wavelength scales: nanowire enabled new PV concepts (Conference Presentation)

Anna Fontcuberta i Morral, Pablo Romero Gómez

III-V semiconductor nanowires (NWs) are promising building blocks for next generation solar energy conversion at low cost. NW ensembles constitute a new class of metamaterial, where the optical properties of the array are tuned by the individual NW type, g ...

SPIE2018