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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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 |
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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 |
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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. |
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School of Materials Science and Engineering |
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School of Materials Science and Engineering Yang, Xuexian Dong, Zhili Sun, Chang Q. |
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Yang, Xuexian Dong, Zhili Sun, Chang Q. |
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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 |
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2023 |
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https://hdl.handle.net/10356/171439 |
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