Publications de Xiaoyun Yu | EPFL Graph Search

Solution-Processed Ultrathin SnS2-Pt Nanoplates for Photoelectrochemical Water Oxidation

Kevin Sivula, Liang Yao, Nestor Guijarro Carratala, Yongpeng Liu, Xiaoyun Yu, Ting Zhang, Yong Zuo

Tin disulfide (SnS2) is attracting significant interest because of the abundance of its elements and its excellent optoelectronic properties in part related to its layered structure. In this work, we specify the preparation of ultrathin SnS2 nanoplates (NP ...

AMER CHEMICAL SOC2019

Evaluating spinel ferrites MFe2O4 (M = Cu, Mg, Zn) as photoanodes for solar water oxidation: prospects and limitations

Kevin Sivula, Nestor Guijarro Carratala, Florian Le Formal, Xavier Adrian Jeanbourquin, Xiaoyun Yu, Mathieu Steven Prévot, Pauline Bornoz

2018

Catalyst-Free, Fast, and Tunable Synthesis for Robust Covalent Polymer Network Semiconducting Thin Films

Kevin Sivula, Liang Yao, Nestor Guijarro Carratala, Xavier Adrian Jeanbourquin, Xiaoyun Yu, Arvindh Sekar

2018

Defect Mitigation of Solution-Processed 2D WSe2 Nanoflakes for Solar-to-Hydrogen Conversion

Kevin Sivula, Xiaoyun Yu, Nestor Guijarro Carratala

Few-atomic-layer nanoflakes of liquid-phase exfoliated semiconducting transition metal dichalcogenides (TMDs) hold promise for large-area, high-performance, low-cost solar energy conversion, but their performance is limited by recombination at defect sites ...

American Chemical Society (ACS)2018

Photogenerated Charge Harvesting and Recombination in Photocathodes of Solvent-Exfoliated WSe2

Kevin Sivula, Xiaoyun Yu

Understanding and optimizing the effects of edge states and nanoflake dimensions on the photon harvesting efficiency in ultrathin transition-metal dichalcogenide (TMD) semiconductor photoelectrodes is critical to assessing their practical viability for sol ...

Amer Chemical Soc2017

Layered 2D semiconducting transition metal dichalcogenides for solar energy conversion

Kevin Sivula, Xiaoyun Yu

2017

Hybrid Heterojunctions of Solution-Processed Semiconducting 2D Transition Metal Dichalcogenides

Kevin Sivula, Nestor Guijarro Carratala, Xavier Adrian Jeanbourquin, Natalie Renuka Banerji, Xiaoyun Yu, Muhammad Aiman Bin Rahmanudin Hamdan

Exfoliated transition metal dichalcogenides (2D-TMDs) are attractive light-harvesting materials for large-area and inexpensive solar energy conversion given their ability to form highly tolerant heterojunctions. However, the preparation of large-area heter ...

Amer Chemical Soc2017

Engineering the self-assembly of diketopyrrolopyrrole-based molecular semiconductors via an aliphatic linker strategy

Kevin Sivula, Xavier Adrian Jeanbourquin, Nestor Guijarro Carratala, Xiaoyun Yu, Andrea Gasperini, Emilie Aude Marie Ripaud, Muhammad Aiman Bin Rahmanudin Hamdan

The solid-state self-assembly of molecular semiconductors is a key aspect for controlling the optoelectronic properties of organic electronic materials. Herein, we investigate the use of a flexible linker strategy to control the self-assembly of a solution ...

Royal Society of Chemistry2017

Amorphous Ternary Charge-Cascade Molecules for Bulk Heterojunction Photovoltaics

Kevin Sivula, Liang Yao, Nestor Guijarro Carratala, Xavier Adrian Jeanbourquin, Xiaoyun Yu, Muhammad Aiman Bin Rahmanudin Hamdan

Ternary bulk heterojunctions with cascade-type energy-level configurations are of significant interest for further improving the power conversion efficiency (PCE) of organic solar cells. However, controlling the self-assembly in solution-processed ternary ...

Amer Chemical Soc2017

Solution-processed two-dimensional transition metal dichalcogenides for solar energy conversion

Xiaoyun Yu

The layered semiconducting transition metal dichalcogenides (TMDs), such as MoS2, WS2, MoSe2, and WSe2, are promising light absorbers for solar energy conversion applications due to their superior optoelectronic properties and chemical stability, however s ...

EPFL2017