Publications by Rebekah Anne Wells

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

Andras Kis, Kevin Sivula, Yanfei Zhao, Rebekah Anne Wells, Simon Nussbaum, Marina Caroline Michèle Caretti, Zhenyu Wang, Victor Carle Adrien Boureau

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 ...

Royal Soc Chemistry2024

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

Assembling a Photoactive 2D Puzzle: From Bulk Powder to Large- Area Films of Semiconducting Transition-Metal Dichalcogenide Nanosheets

Kevin Sivula, Rebekah Anne Wells

CONSPECTUS: Two-dimensional (2D) semiconducting materials are poised to revolutionize ultrathin, high-performance optoelectronic devices. In particular, transition-metal dichalcogenides (TMDs) are well-suited for applications requiring robust and stable ma ...

2023

Transparency and Morphology Control of Cu2O Photocathodes via an in Situ Electroconversion

Michael Graetzel, Kevin Sivula, Linda Lazouni, Rebekah Anne Wells, Simon Nussbaum, Marina Caroline Michèle Caretti, Dan Ren, Meng Xia

2022

Semiconducting two dimensional transition metal dichalcogenides via solution-processable routes

Rebekah Anne Wells

Two-dimensional (2D) transition metal dichalcogenides (TMDs) possess remarkable optoelectronic properties which are unique and tunable based on composition and thickness. These materials are posed to revolutionize ultrathin devices across many fields inclu ...

EPFL2022

A semiconducting polymer bulk heterojunction photoanode for solar water oxidation

Jun Ho Yum, Kevin Sivula, Nestor Guijarro Carratala, Arvindh Sekar, Liang Yao, Yongpeng Liu, Rebekah Anne Wells, Florent Alexandre Boudoire, Han-Hee Cho

Organic semiconductors hold promise to enable scalable, low-cost and high-performance artificial photosynthesis. However, the performance of systems based on organic semiconductors for light-driven water oxidation have remained poor compared with inorganic ...

NATURE RESEARCH2021

A hybrid bulk-heterojunction photoanode for direct solar-to-chemical conversion dagger

Michael Graetzel, Jun Ho Yum, Kevin Sivula, Nestor Guijarro Carratala, Arvindh Sekar, Liang Yao, Barbara Alexandra Primera Darwich, Yongpeng Liu, Rebekah Anne Wells, Dan Ren, Han-Hee Cho, Meng Xia

Organic semiconductors (OSs) are emerging candidates as light-harvesting materials in photoelectrochemical (PEC) cells for direct solar-to-chemical conversion. Despite significant recent progress with OS-based photocathodes, the development of efficient an ...

ROYAL SOC CHEMISTRY2021

Establishing Stability in Organic Semiconductor Photocathodes for Solar Hydrogen Production

Jun Ho Yum, Kevin Sivula, Florian Le Formal, Muhammad Aiman Bin Rahmanudin Hamdan, Nestor Guijarro Carratala, Arvindh Sekar, Liang Yao, Yongpeng Liu, Rebekah Anne Wells, Florent Alexandre Boudoire, 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 SOC2020

Lead Halide Perovskite Quantum Dots to Enhance the Power Conversion Efficiency of Organic Solar Cells

Jun Ho Yum, Kevin Sivula, Florian Le Formal, Nestor Guijarro Carratala, Liang Yao, Barbara Alexandra Primera Darwich, Yongpeng Liu, Rebekah Anne Wells, Lucie Navratilova, Han-Hee Cho

The facile synthesis, solution-processability, and outstanding optoelectronic properties of emerging colloidal lead halide perovskite quantum dots (LHP QDs) makes them ideal candidates for scalable and inexpensive optoelectronic applications, including pho ...

Wiley-VCH Verlag GmbH2019

Roll-to-Roll Deposition of Semiconducting 2D Nanoflake Films of Transition Metal Dichalcogenides for Optoelectronic Applications

Kevin Sivula, Rebekah Anne Wells, Charles Roger Jean Lhermitte, Hannah Elizabeth Johnson

Exfoliated transition metal dichalcogenide (TMD) nanomaterials possess remarkable and tunable semiconducting properties which make them competitive for use in ultrathin, flexible devices such as photodetectors, sensors, and photoelectrodes for solar energy ...

2019

Spinel Structural Disorder Influences Solar-Water-Splitting Performance of ZnFe2 O4 Nanorod Photoanodes

Kevin Sivula, Florian Le Formal, Nestor Guijarro Carratala, Yongpeng Liu, Rebekah Anne Wells, Xiaodi Zhu, Chen Gao

Wiley2018