Publications by Kevin Sivula | EPFL Graph Search

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Strategies to convert energy from the sun into chemical fuels and feedstocks for a carbon-neutral economy are under rapid development. A photoelectrochemical route uses a direct semiconductor liquid junction that offers simplicity but places challenging co ...

A method for manufacturing a semiconducting, organic, covalent polymer network thin film is disclosed, said method comprising the steps of deposing a solution comprising azide- containing monomers and electron-deficient alkyne-containing monomers onto a re ...

Layered hybrid organic−inorganic perovskite (LHOIP) materials constructed with low-band-gap chromophore-based organic spacer cations are anemerging class of materials that promise unique tunability of their optoelectronic properties. However, the large siz ...

In this work, we present a high-performance, stable formamidinium lead iodide (FAPI) perovskite solar cell (PSC) achieved through the use of 2,2,6,6-tetramethylpiperidinyloxyl (TEMPO) bulk passivation and rapid photonic annealing. Utilizing flash infrared ...

Solution-processed semiconducting transition metal dichalcogenides are emerging as promising two-dimensional materials for photovoltaic and optoelectronic applications. Here, we have used transient absorption spectroscopy to provide unambiguous evidence an ...

The alloying of two-dimensional (2D) transition metal dichalcogenides (TMDs) is an established route to produce robust semiconductors with continuously tunable optoelectronic properties. However, typically reported methods for fabricating alloyed 2D TMD na ...

The development of fully-conjugated semiconducting block-copolymers is an important goal for organic electronics, but to date has been almost exclusively limited to materials containing poly(3-alkylthiophenes). Here we present the prototype of a class of f ...

The employment of 2D perovskites is a promising approach to tackling the stability and voltage issues inherent in perovskite solar cells. It remains unclear, however, whether other perovskites with different dimensionalities have the same effect on efficie ...

The recently discovered unique optoelectronic properties and chemical robustness of mono- or few-layer two-dimensional (2D) semiconducting transition metal dichalcogenides (TMDs) such as MoS2, WS2, MoSe2, and WSe2 have opened new possibilities for solar en ...

The WO 3 surface catalyst offers the acceleration of the conversion of water into oxygen and protons. In this work, we study the oxygen evolution reaction (OER) and H 2 O 2 formation as competitive reactions on the (001) WO 3 surface using stateof-the-art ...

As covalent organic frameworks (COFs) are coming of age, the lack of effective approaches to achieve crystalline and centimeter-scale-homogeneous COF films remains a significant bottleneck toward advancing the application of COFs in optoelectronic devices. ...

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( ...

Interface engineering in perovskite solar cells is key to high performance. Now, You et al. design an interlayer that both passivates defects and improves the energy level alignment between the perovskite and hole transport material. ...

A conjugated polymer known for high stability (poly[benzimidazobenzophenanthroline], coded as BBL) is examined as a photoanode for direct solar water oxidation. In aqueous electrolyte with a sacrificial hole acceptor (SO32-), photoelectrodes show a morphol ...

This paper addresses the origin of the decrease in the external electrical bias required for water photoelectrolysis with hematite photoanodes, observed following surface treatments of such electrodes. We consider two alternative surface modifications: a c ...

Recently in Joule, Zhang, Li, and colleagues reported a new benchmark in photocatalytic overall water splitting. By optimizing the co-catalysts and redox mediator between the light absorbers in a two-step heterogeneous photosystem, the authors reached an a ...

The effects induced by post-synthesis hydrogenation on ZnFe2O4 flat films in terms of photoelectrochemical (PEC) performance of photoanodes for water oxidation have been deeply investigated as a function of the pre-annealing temperature of the materials. T ...

Kevin Sivula

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Advancing Materials and Methods for Photoelectrochemical Energy Conversion

Covalent polymer network semiconducting thin-films and method for producing thereof

Tuning Napththalenediimide Cations for Incorporation into Ruddlesden–Popper-Type Hybrid Perovskites

TEMPO bulk passivation boosts the performance and operational stability of rapid-annealed FAPI perovskite solar cells

The Role of Excitons and Free Charges in the Excited-State Dynamics of Solution-Processed Few-Layer MoS

Composition-tunable transition metal dichalcogenide nanosheets via a scalable, solution-processable method

Conjugation break spacers and flexible linkers as tools to engineer the properties of semiconducting polymers

Semiconducting alternating multi-block copolymers via a di-functionalized macromonomer approach

Passivation Mechanism Exploiting Surface Dipoles Affords High-Performance Perovskite Solar Cells

Toward Large-Area Solar Energy Conversion with Semiconducting 2D Transition Metal Dichalcogenides

A metadynamics study of water oxidation reactions at (001)-WO3/liquid-water interface

In situ and operando spectroelectrochemical techniques for evaluating interfacial carrier behavior in emerging photoelectrodes for solar fuel production

Covalent Organic Framework Nanoplates Enable Solution-Processed Crystalline Nanofilms for Photoelectrochemical Hydrogen Evolution

Achieving visible light-driven hydrogen evolution at positive bias with a hybrid copper-iron oxide|TiO2-cobaloxime photocathode

Bifunctional hole-shuttle molecule for improved interfacial energy level alignment and defect passivation in perovskite solar cells

Direct Light-Driven Water Oxidation by a Ladder-Type Conjugated Polymer Photoanode

Dynamics of photogenerated holes in surface modified alpha-Fe2O3 photoanodes for solar water splitting

A Step toward Economically Viable Solar Fuel Production

Hydrogenation of ZnFe2O4 Flat Films: Effects of the Pre-Annealing Temperature on the Photoanodes Efficiency for Water Oxidation

Defect engineering of liquid phase exfoliated 2D semiconducting WSe2 nanoflakes for solar fuel generation