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Synchronizing gas injections and time-resolved data acquisition for perturbation-enhanced APXPS experiments |
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| Author: | Redekop, Evgeniy A.1; Johansson, Niclas2; Kokkonen, Esko2; |
| Organizations: |
1Department of Chemistry, Centre for Materials Science and Nanotechnology (SMN), University of Oslo, Oslo 0371, Norway 2MAX IV Laboratory, Lund University, SE-221 00 Lund, Sweden 3Nano and Molecular Systems Research Unit, University of Oulu, FI-90014 Oulu, Finland
4Environmental and Chemical Engineering Research Unit, University of Oulu, FI-90014 Oulu, Finland
5Department of Physics, Lund University, SE-221 00 Lund, Sweden 6Department of Chemistry, University of Helsinki, FI-00014 Helsinki, Finland 7Current address: Department of Chemistry and Materials Science, Aalto University, FI-00076 Aalto, Finland |
| Format: | article |
| Version: | accepted version |
| Access: | open |
| Online Access: | PDF Full Text (PDF, 0.8 MB) |
| Persistent link: | http://urn.fi/urn:nbn:fi-fe202104069428 |
| Language: | English |
| Published: |
American Institute of Physics,
2021
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| Publish Date: | 2021-04-06 |
| Description: |
AbstractAn experimental approach is described in which well-defined perturbations of the gas feed into an Ambient Pressure X-ray Photoelectron Spectroscopy (APXPS) cell are fully synchronized with the time-resolved x-ray photoelectron spectroscopy data acquisition. These experiments unlock new possibilities for investigating the properties of materials and chemical reactions mediated by their surfaces, such as those in heterogeneous catalysis, surface science, and coating/deposition applications. Implementation of this approach, which is termed perturbation-enhanced APXPS, at the SPECIES beamline of MAX IV Laboratory is discussed along with several experimental examples including individual pulses of N₂ gas over a Au foil, a multi-pulse titration of oxygen vacancies in a pre-reduced TiO₂ single crystal with O₂ gas, and a sequence of alternating precursor pulses for atomic layer deposition of TiO₂ on a silicon wafer substrate. see all
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| Series: |
Review of scientific instruments |
| ISSN: | 0034-6748 |
| ISSN-E: | 1089-7623 |
| ISSN-L: | 0034-6748 |
| Volume: | 92 |
| Issue: | 4 |
| Article number: | 044101 |
| DOI: | 10.1063/5.0039957 |
| OADOI: | https://oadoi.org/10.1063/5.0039957 |
| Type of Publication: |
A1 Journal article – refereed |
| Field of Science: |
114 Physical sciences 116 Chemical sciences |
| Subjects: | |
| Funding: |
This work was funded by the Research Council of Norway (RCN) under Contract No. 272266 (TAPXPS project) and the European Regional Development Fund (Interreg Öresun-Kattegat-Skagerrak ESS & MAX IV: Cross Border Science and Society, MAX4ESSFUN, Ref. No. MAX-004). S.U. acknowledges funding from the European Research Council under the European Union’s Horizon 2020 research and innovation program, Project SURFACE (Grant Agreement No. 717022), and the Academy of Finland (Grant No. 326291). The ALD-related research was financed by the Faculty of Science, University of Helsinki, and the Academy of Finland (Grant Nos. 295696 and 309552). |
| EU Grant Number: |
(717022) SURFACE - The unexplored world of aerosol surfaces and their impacts. |
| Academy of Finland Grant Number: |
326291 |
| Detailed Information: |
326291 (Academy of Finland Funding decision) |
| Dataset Reference: |
The data that support the findings of this study are available from the corresponding author upon reasonable request. |
| Copyright information: |
© 2021 Author(s). Published under license by AIP Publishing. The final authenticated version is available online at https://doi.org/10.1063/5.0039957. |