Effects of doping concentration on bond length and bond energy studied by Raman shift

Based on the correlation between Raman shift and bond parameters, and further combined with experimental values of the Raman shift composition effect, the relationship between the composition and bond parameters of the 2D-M1−xM′xX2 and 2D-MX′2xX2(1−x) alloy materials was established. Numerical repro...

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Main Authors: Yang, Xuexian, Dong, Zhili, Sun, Chang Q.
Other Authors: School of Materials Science and Engineering
Format: Article
Language:English
Published: 2023
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Online Access:https://hdl.handle.net/10356/171439
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-1714392023-10-27T15:46:12Z Effects of doping concentration on bond length and bond energy studied by Raman shift Yang, Xuexian Dong, Zhili Sun, Chang Q. School of Materials Science and Engineering Engineering::Materials Nanosheets Crystals Based on the correlation between Raman shift and bond parameters, and further combined with experimental values of the Raman shift composition effect, the relationship between the composition and bond parameters of the 2D-M1−xM′xX2 and 2D-MX′2xX2(1−x) alloy materials was established. Numerical reproduction of the measurements clarified that the host atom phonons involved interaction with all of its z neighbors, whereas the doping atom phonon only involved interaction with a dimer. The doping of large atoms resulted in an elongation of the bond length, an increase in the equivalent coordination number, and enhancement of the binding energy. The doping of small atoms led to a contraction of the bond length, a decrease in the equivalent coordination number, and a weakening of binding energy. By quantifying the relationship between composition and bond parameters from Raman shifts, a deep understanding of two-dimensional alloy properties can be achieved. Ministry of Education (MOE) Published version This work was supported by the National Natural Science Foundation of China (Project No. 11602094), the Ministry of Education of Singapore [Project No. RG70/20 (2020-T1-001-023)], the Natural Science Foundation of Hunan Province (Project No. 2022JJ30470), and the National Scholarship Foundation (Project No. 202008430239). 2023-10-24T08:27:47Z 2023-10-24T08:27:47Z 2023 Journal Article Yang, X., Dong, Z. & Sun, C. Q. (2023). Effects of doping concentration on bond length and bond energy studied by Raman shift. Applied Physics Letters, 123(5), 053101-. https://dx.doi.org/10.1063/5.0160714 0003-6951 https://hdl.handle.net/10356/171439 10.1063/5.0160714 2-s2.0-85166939705 5 123 053101 en RG70/20 (2020-T1-001-023) Applied Physics Letters © 2023 The Author(s). Published under an exclusive license by AIP Publishing. All rights reserved. This article may be downloaded for personal use only. Any other use requires prior permission of the copyright holder. The Version of Record is available online at http://doi.org/10.1063/5.0160714 or URL link. application/pdf
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic Engineering::Materials
Nanosheets
Crystals
spellingShingle Engineering::Materials
Nanosheets
Crystals
Yang, Xuexian
Dong, Zhili
Sun, Chang Q.
Effects of doping concentration on bond length and bond energy studied by Raman shift
description Based on the correlation between Raman shift and bond parameters, and further combined with experimental values of the Raman shift composition effect, the relationship between the composition and bond parameters of the 2D-M1−xM′xX2 and 2D-MX′2xX2(1−x) alloy materials was established. Numerical reproduction of the measurements clarified that the host atom phonons involved interaction with all of its z neighbors, whereas the doping atom phonon only involved interaction with a dimer. The doping of large atoms resulted in an elongation of the bond length, an increase in the equivalent coordination number, and enhancement of the binding energy. The doping of small atoms led to a contraction of the bond length, a decrease in the equivalent coordination number, and a weakening of binding energy. By quantifying the relationship between composition and bond parameters from Raman shifts, a deep understanding of two-dimensional alloy properties can be achieved.
author2 School of Materials Science and Engineering
author_facet School of Materials Science and Engineering
Yang, Xuexian
Dong, Zhili
Sun, Chang Q.
format Article
author Yang, Xuexian
Dong, Zhili
Sun, Chang Q.
author_sort Yang, Xuexian
title Effects of doping concentration on bond length and bond energy studied by Raman shift
title_short Effects of doping concentration on bond length and bond energy studied by Raman shift
title_full Effects of doping concentration on bond length and bond energy studied by Raman shift
title_fullStr Effects of doping concentration on bond length and bond energy studied by Raman shift
title_full_unstemmed Effects of doping concentration on bond length and bond energy studied by Raman shift
title_sort effects of doping concentration on bond length and bond energy studied by raman shift
publishDate 2023
url https://hdl.handle.net/10356/171439
_version_ 1781793882936180736