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Phase transition and thermal stability of epitaxial PtSe(2) nanolayer on Pt(111)
This work relates to direct synthesis of the two-dimensional (2D) transition metal dichalchogenide (TMD) PtSe(2) using an original method based on chemical deposition during immersion of a Pt(111) surface into aqueous Na(2)Se solution. Annealing of the sample induces significant modifications in the...
Autores principales: | , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
The Royal Society of Chemistry
2020
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9056341/ https://www.ncbi.nlm.nih.gov/pubmed/35516062 http://dx.doi.org/10.1039/d0ra04346j |
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author | Tong, Yongfeng Bouaziz, Meryem Oughaddou, Hamid Enriquez, Hanna Chaouchi, Karine Nicolas, François Kubsky, Stefan Esaulov, Vladimir Bendounan, Azzedine |
author_facet | Tong, Yongfeng Bouaziz, Meryem Oughaddou, Hamid Enriquez, Hanna Chaouchi, Karine Nicolas, François Kubsky, Stefan Esaulov, Vladimir Bendounan, Azzedine |
author_sort | Tong, Yongfeng |
collection | PubMed |
description | This work relates to direct synthesis of the two-dimensional (2D) transition metal dichalchogenide (TMD) PtSe(2) using an original method based on chemical deposition during immersion of a Pt(111) surface into aqueous Na(2)Se solution. Annealing of the sample induces significant modifications in the structural and electronic properties of the resulting PtSe(2) film. We report systematic investigations of temperature dependent phase transitions by combining synchrotron based high-resolution X-ray photoemission (XPS), low temperature scanning tunnelling microscopy (LT-STM) and low energy electron diffraction (LEED). From the STM images, a phase transition from TMD 2H-PtSe(2) to Pt(2)Se alloy monolayer structure is observed, in agreement with the LEED patterns showing a transition from (4 × 4) to (√3 × √3)R30° and then to a (2 × 2) superstructure. This progressive evolution of the surface reconstruction has been monitored by XPS through systematic de-convolution of the Pt4f and Se3d core level peaks at different temperatures. The present work provides an alternative method for the large scale fabrication of 2D transition metal dichalchogenide films. |
format | Online Article Text |
id | pubmed-9056341 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | The Royal Society of Chemistry |
record_format | MEDLINE/PubMed |
spelling | pubmed-90563412022-05-04 Phase transition and thermal stability of epitaxial PtSe(2) nanolayer on Pt(111) Tong, Yongfeng Bouaziz, Meryem Oughaddou, Hamid Enriquez, Hanna Chaouchi, Karine Nicolas, François Kubsky, Stefan Esaulov, Vladimir Bendounan, Azzedine RSC Adv Chemistry This work relates to direct synthesis of the two-dimensional (2D) transition metal dichalchogenide (TMD) PtSe(2) using an original method based on chemical deposition during immersion of a Pt(111) surface into aqueous Na(2)Se solution. Annealing of the sample induces significant modifications in the structural and electronic properties of the resulting PtSe(2) film. We report systematic investigations of temperature dependent phase transitions by combining synchrotron based high-resolution X-ray photoemission (XPS), low temperature scanning tunnelling microscopy (LT-STM) and low energy electron diffraction (LEED). From the STM images, a phase transition from TMD 2H-PtSe(2) to Pt(2)Se alloy monolayer structure is observed, in agreement with the LEED patterns showing a transition from (4 × 4) to (√3 × √3)R30° and then to a (2 × 2) superstructure. This progressive evolution of the surface reconstruction has been monitored by XPS through systematic de-convolution of the Pt4f and Se3d core level peaks at different temperatures. The present work provides an alternative method for the large scale fabrication of 2D transition metal dichalchogenide films. The Royal Society of Chemistry 2020-08-20 /pmc/articles/PMC9056341/ /pubmed/35516062 http://dx.doi.org/10.1039/d0ra04346j Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by/3.0/ |
spellingShingle | Chemistry Tong, Yongfeng Bouaziz, Meryem Oughaddou, Hamid Enriquez, Hanna Chaouchi, Karine Nicolas, François Kubsky, Stefan Esaulov, Vladimir Bendounan, Azzedine Phase transition and thermal stability of epitaxial PtSe(2) nanolayer on Pt(111) |
title | Phase transition and thermal stability of epitaxial PtSe(2) nanolayer on Pt(111) |
title_full | Phase transition and thermal stability of epitaxial PtSe(2) nanolayer on Pt(111) |
title_fullStr | Phase transition and thermal stability of epitaxial PtSe(2) nanolayer on Pt(111) |
title_full_unstemmed | Phase transition and thermal stability of epitaxial PtSe(2) nanolayer on Pt(111) |
title_short | Phase transition and thermal stability of epitaxial PtSe(2) nanolayer on Pt(111) |
title_sort | phase transition and thermal stability of epitaxial ptse(2) nanolayer on pt(111) |
topic | Chemistry |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9056341/ https://www.ncbi.nlm.nih.gov/pubmed/35516062 http://dx.doi.org/10.1039/d0ra04346j |
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