Evidence map›Paper›PMID 29396396›Full record

ArticleNature communications2018

Revealing hole trapping in zinc oxide nanoparticles by time-resolved X-ray spectroscopy.

Thomas J Penfold, Jakub Szlachetko, Fabio G Santomauro, Alexander Britz, Wojciech Gawelda, Gilles Doumy, Anne Marie March, Stephen H Southworth, Jochen Rittmann, Rafael Abela and 2 more

Open access · goldAbstract read
In one paragraph

Article in Nature communications, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed
4.7field-weighted citation impact, top 4% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

23 citing papers in PubMed, 116 citations in OpenAlex.

  1. Article
  2. Electronic and Structural Relaxation of Photoexcited WOThe journal of physical chemistry letters · 2025
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  15. Femtosecond Charge Density Modulations in Photoexcited CuWOThe journal of physical chemistry. C, Nanomaterials and interfaces · 2021
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

12 authors at 6 institutions in 5 countries.

Thomas J PenfoldChemistry-School of Natural and Environmental Sciences, Newcastle University, Newcastle upon Tyne, NE1 7RU, UK.
Jakub SzlachetkoSwissFEL, Paul Scherrer Institut, CH-5232, Villigen-PSI, Switzerland.
Fabio G SantomauroEcole polytechnique Fédérale de Lausanne, Laboratoire de spectroscopie ultrarapide, ISIC, FSB and Lausanne Centre for Ultrafast Science (LACUS), CH-1015, Lausanne, Switzerland.
Alexander BritzEuropean XFEL, Holzkoppel 4, D-22869, Schenefeld, Germany.
Wojciech GaweldaEuropean XFEL, Holzkoppel 4, D-22869, Schenefeld, Germany.ORCID http://orcid.org/0000-0001-7824-9197
Gilles DoumyArgonne National Laboratory, 9700 S. Cass Ave., Argonne, IL, 60439, USA.
Anne Marie MarchArgonne National Laboratory, 9700 S. Cass Ave., Argonne, IL, 60439, USA.
Stephen H SouthworthArgonne National Laboratory, 9700 S. Cass Ave., Argonne, IL, 60439, USA.
Jochen RittmannEcole polytechnique Fédérale de Lausanne, Laboratoire de spectroscopie ultrarapide, ISIC, FSB and Lausanne Centre for Ultrafast Science (LACUS), CH-1015, Lausanne, Switzerland.
Rafael AbelaSwissFEL, Paul Scherrer Institut, CH-5232, Villigen-PSI, Switzerland.
Majed CherguiEcole polytechnique Fédérale de Lausanne, Laboratoire de spectroscopie ultrarapide, ISIC, FSB and Lausanne Centre for Ultrafast Science (LACUS), CH-1015, Lausanne, Switzerland.ORCID http://orcid.org/0000-0002-4856-226X
Christopher J MilneSwissFEL, Paul Scherrer Institut, CH-5232, Villigen-PSI, Switzerland. chris.milne@psi.ch.ORCID http://orcid.org/0000-0003-4714-9139
Argonne National Laboratory · USÉcole Polytechnique Fédérale de Lausanne · CHPaul Scherrer Institute · CHAdam Mickiewicz University in Poznań · PLMax Planck Institute for the Structure and Dynamics of Matter · DENewcastle University · GB

Funding

European Research Council 6945197
6 · The paper itself

Abstract

Nanostructures of transition metal oxides, such as zinc oxide, have attracted considerable interest for solar-energy conversion and photocatalysis. Both applications are sensitive to the transport and trapping of photoexcited charge carriers. The probing of electron trapping has recently become possible using time-resolved element-sensitive methods, such as X-ray spectroscopy. However, valence-band-trapped holes have so far escaped observation. Herein we use X-ray absorption spectroscopy combined with a dispersive X-ray emission spectrometer to probe the charge carrier relaxation and trapping processes in zinc oxide nanoparticles after above band-gap photoexcitation. Our results, supported by simulations, demonstrate that within 80 ps, photoexcited holes are trapped at singly charged oxygen vacancies, which causes an outward displacement by ~15% of the four surrounding zinc atoms away from the doubly charged vacancy. This identification of the hole traps provides insight for future developments of transition metal oxide-based nanodevices.

Identifiers

PMID29396396
PMCPMC5797134
OpenAlexW2786562620

What OpenQuestion holds

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LicenceCC BY
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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.