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Cited by 278

The DOI matches its Crossref record; 34 of the 34 references it cites were found in a registry or an index.

Self-assembled 2D WSe2 thin films for photoelectrochemical hydrogen production

Open access
Yu, Xiaoyun, Prévot, Mathieu S., Guijarro, Néstor, Sivula, Kevin·2015·Nature Communications

Abstract

WSe 2—a layered semiconductor that can be exfoliated into atomically thin two-dimensional sheets—offers promising characteristics for application in solar energy conversion. However, the lack of controllable, cost-effective methods to scalably fabricate homogeneous thin films currently limits practical application. Here we present a technique to prepare controlled thin films of 2D WSe 2 from dispersions of solvent-exfoliated few-layer flakes. Flake self-assembly at a liquid/liquid interface (formed exceptionally from two non-solvents for WSe 2) followed by substrate transfer affords large-area thin films with superior 2D flake alignment compared with traditional (liquid/air) self-assembly techniques. We further demonstrate, for the first time, solar-to-hydrogen conversion from solution-processed WSe 2 thin films. Bare photoelectrodes with a thickness of ca. 25 nm exhibit sustained p-type photocurrent under simulated solar illumination, and up to 1.0 mA cm–2 at 0 V versus reversible hydrogen electrode with an added water reduction catalyst (Pt). The importance of the self-assembled morphology is established by photoelectrochemical and conductivity measurements.

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Metadata

Authors
Yu, X., Prévot, M. S., Guijarro, N., & Sivula, K.
Venue
Nature Communications
Published
2015-07-01
Volume
6
Issue
1
Pages
7596-7596
ISSN
2041-1723 (ISSN-L)
OpenAlex
W1526026297
Cited by
278
References
34
FWCI
12.12
Type
journal article
Language
en
Open access
gold

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