Publication
CuInGaS2 photocathodes treated with SbX3 (X = Cl, I): the effect of the halide on solar water splitting performance
Publications associées (37)
Assessing the Charge Carrier Dynamics at Hybrid Interfaces of Organic Photoanodes for Solar Fuels
Kevin Sivula, Yongpeng Liu, Han-Hee Cho, Alexander Wieczorek
Organic semiconductors (OSCs) have emerged as promising active layers for photoanodes to drive photoelectrochemical (PEC) oxidation reactions. Interfacing an OSC with an inorganic electron transport layer (ETL) is key to enabling both high performance and ...
Amer Chemical Soc2024Photoelectrochemical Cell Engineering for Solar Energy Conversion
Solar energy is the most abundant energy source, harnessing solar energy holds the solution to the challenge of increasing global energy demand and reducing our dependence on fossil fuels. Photovoltaics which directly convert solar energy into electricity ...
EPFL2023Solar Water Splitting Using Earth-Abundant Electrocatalysts Driven by High-Efficiency Perovskite Solar Cells
Michael Graetzel, Shaik Mohammed Zakeeruddin, Hong Zhang, Dan Ren
Hydrogen is considered as the "holy grail" for the energy community. One of the most promising strategies to produce hydrogen is to split water using renewable energy such as solar radiation. The abundance of water and solar energy enables the potential of ...
WILEY-V C H VERLAG GMBH2022Photoelectrochemical Oxygen Evolution on Mesoporous Hematite Films Prepared from Maghemite Nanoparticles
Michael Graetzel, Shaik Mohammed Zakeeruddin, Nathália Carolina Verissimo
Iron oxides, especially hematite (alpha-Fe2O3), a are promising materials for applications in photoelectrochemical cells and photo-redox catalysis. However, realizing high-performance hematite photoanodes via an environmentally-friendly route remains a gre ...
ELECTROCHEMICAL SOC INC2022Novel Interfacial Characterization and Surface Engineering in Semiconductor Electrodes for Optimized Solar Fuel Production
Harvesting sunlight, the ultimate renewable power source, in a cost-effective way has been long recognized as a necessary route to meet the global energy challenges. Solar energy can be transformed into electricity by means of photovoltaic devices to suppl ...
EPFL2021Spray Synthesis of CuFeO2 Photocathodes and In-Operando Assessment of Charge Carrier Recombination
Kevin Sivula, Nestor Guijarro Carratala, Florian Le Formal, 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 SOC2021Establishing Stability in Organic Semiconductor Photocathodes for Solar Hydrogen Production
Kevin Sivula, Jun Ho Yum, Rebekah Anne Wells, Liang Yao, Nestor Guijarro Carratala, Florian Le Formal, Yongpeng Liu, Florent Alexandre Boudoire, Arvindh Sekar, Han-Hee Cho
As organic semiconductors attract increasing attention to application in the fields of bioelectronics and artificial photosynthesis, understanding the factors that determine their robust operation in direct contact with aqueous electrolytes becomes a criti ...
AMER CHEMICAL SOC2020Achieving visible light-driven hydrogen evolution at positive bias with a hybrid copper-iron oxide|TiO2-cobaloxime photocathode
Kevin Sivula, Florent Alexandre Boudoire
H-2 is an environmentally-friendly fuel that would allow for a circular economy but its sustainable production, e.g. from solar energy and water, remains a challenge. A hybrid CuFexOy|TiO2-CoHEC (CoHEC = chloro([4,4 '-bipyridine]-2,6-dicarboxylic acid)bis( ...
ROYAL SOC CHEMISTRY2020Solar-Electrochemical Devices for Water Splitting and Chlorine Generation
Solar technologies hold the potential to ultimately counteract the effects of climate change. Nevertheless, the intermittency of sunlight poses technical challenges regarding the storage of the surplus production and the supply of the deficit.
The generat ...
EPFL2019Material and mesostructural design guidelines for high performing photoelectrodes
The fabrication of particle-based photoelectrodes by coating or dipping procedures-similar to the scaled fabrication of battery electrodes-can be a route to overcome the efficiency-cost tradeoff of photoelectrochemical (PEC) water splitting devices. Additi ...
EPFL2019