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Hybrid Organic/Inor...
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Najafi, LeylaIst Italiano Tecnol, Graphene Labs, Via Morego 30, I-16163 Genoa, Italy.;BeDimensional Spa, Via Lungotorrente Secca 3d, I-16163 Genoa, Italy.
(författare)
Hybrid Organic/Inorganic Photocathodes Based on WS2 Flakes as Hole Transporting Layer Material
- Artikel/kapitelEngelska2021
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2020-11-27
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John Wiley & Sons,2021
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LIBRIS-ID:oai:DiVA.org:uu-464445
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https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-464445URI
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https://doi.org/10.1002/sstr.202000098DOI
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Språk:engelska
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Sammanfattning på:engelska
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Title in Web of Science: Hybrid Organic/Inorganic Photocathodes Based on WS2 Flakes as Hole Transporting Layer Material
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The efficient production of molecular hydrogen (H2) is a fundamental step toward an environmentally friendly economy. Photocathodes using organic bulk heterojunction (BHJ) films as light harvesters represent an attracting technology for low-cost photoelectrochemical water splitting. These photocathodes need charge transporting layers (CTLs) to efficiently separate and transport either holes or electrons toward the back-current collector and electrolyte, respectively. Therefore, it is pivotal to control the energy band edge levels and the work function (WF) of the CTLs to match the ones of the BHJ film, current collector, and electrolyte. Herein, the use of 2D p-doped WS2 flakes as hole transporting material for H2-evolving photocathodes based on the regioregular poly(3-hexylthiophene):phenyl-C61-butyric acid methyl ester (rr-P3HT:PCBM) BHJ film is proposed. The WS2 flakes are produced through scalable liquid-phase exfoliation of the bulk crystal, whereas p-type chemical doping allows the tuning of the WS2 WF. This approach boosts the performances of the photocathodes, reaching photocurrent densities up to 4.14 mA cm−2 at 0 V versus reversible hydrogen electrode (RHE), an onset potential of 0.66 V versus RHE, and a ratiometric power-saved metric of 1.28% (under 1 sun illumination). To the best of the authors' knowledge, these performances represent the current record for 2D materials-based CTLs.
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Biuppslag (personer, institutioner, konferenser, titlar ...)
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Romano, ValentinoUniv Messina, Dipartimento MIFT, Viale F Stagno dAlcontres 31, I-98166 Messina, Italy.
(författare)
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Oropesa-Nuñez, ReinierUppsala universitet,Fasta tillståndets fysik(Swepub:uu)reior263
(författare)
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Prato, MirkoIst Italiano Tecnol, Mat Characterizat Facil, Via Morego 30, I-16163 Genoa, Italy.
(författare)
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Lauciello, SimoneIst Italiano Tecnol, Electron Microscopy Facil, Via Morego 30, I-16163 Genoa, Italy.
(författare)
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D'Angelo, GiovannaUniv Messina, Dipartimento MIFT, Viale F Stagno dAlcontres 31, I-98166 Messina, Italy.
(författare)
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Bellani, SebastianoIst Italiano Tecnol, Graphene Labs, Via Morego 30, I-16163 Genoa, Italy.;BeDimensional Spa, Via Lungotorrente Secca 3d, I-16163 Genoa, Italy.
(författare)
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Bonaccorso, FrancescoIst Italiano Tecnol, Graphene Labs, Via Morego 30, I-16163 Genoa, Italy.;BeDimensional Spa, Via Lungotorrente Secca 3d, I-16163 Genoa, Italy.
(författare)
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Ist Italiano Tecnol, Graphene Labs, Via Morego 30, I-16163 Genoa, Italy.;BeDimensional Spa, Via Lungotorrente Secca 3d, I-16163 Genoa, Italy.Univ Messina, Dipartimento MIFT, Viale F Stagno dAlcontres 31, I-98166 Messina, Italy.
(creator_code:org_t)
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Ingår i:Small Structures: John Wiley & Sons2:32688-4062
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