Phase-Engineered Transition Metal Dichalcogenides for Highly Efficient Surface-Enhanced Raman Scattering

Ying Zhang; Zhenyu Shi; Haoyun Cui; Quankun Xia; Fengping Liu; Zhenhai Wang; Jia Wang; Huacheng Fan; Chi Shu; Bo Chen; Hai Li; Zhuangchai Lai; Zhimin Luo; Wei Zheng; Lianhui Wang; Zhiwei Huang

doi:10.1021/acs.nanolett.4c03924

Phase-Engineered Transition Metal Dichalcogenides for Highly Efficient Surface-Enhanced Raman Scattering

Ying Zhang, Zhenyu Shi, Haoyun Cui, Quankun Xia, Fengping Liu, Zhenhai Wang, Jia Wang, Huacheng Fan, Chi Shu, Bo Chen, Hai Li, Zhuangchai Lai, Zhimin Luo, Wei Zheng, Lianhui Wang, Zhiwei Huang

SCHOOL OF FLEXIBLE ELECTRONICS(FUTURE TECHNOLOGIES)|INSTITUTE OF ADVANCED MATERIALS(IAM)

Research output: Contribution to journal › Article › peer-review

1 Scopus citations

Abstract

Phase engineering of two-dimensional (2D) transition metal dichalcogenides (TMDs) is an attractive avenue to construct new surface-enhanced Raman scattering (SERS) substrates. Herein, 2D WS₂ and MoS₂ monolayers with high-purity distorted octahedral phase (1T′) are prepared for highly sensitive SERS detection of analytes (e.g., rhodamine 6G, rhodamine B and crystal violet). 1T′-WS₂ and 1T′-MoS₂ monolayers show the detection limits of 8.28 × 10^-12 and 8.57 × 10^-11 M for rhodamine 6G, with the enhancement factors of 4.6 × 10⁸ and 3.9 × 10⁷, respectively, which are comparable to noble-metal substrates, outperforming semiconducting 2H-W(Mo)S₂ monolayers and most of the reported non-noble-metal substrates. First-principles density functional theory calculations show that their Raman enhancement effect is mainly ascribed to highly efficient interfacial charge transfer between the 1T′-W(Mo)S₂ monolayers and analytes. Our study reveals that 2D TMDs with semimetallic 1T′ phase are promising as next-generation SERS substrates.

Original language	English
Pages (from-to)	14293-14301
Number of pages	9
Journal	Nano Letters
Volume	24
Issue number	45
DOIs	https://doi.org/10.1021/acs.nanolett.4c03924
State	Published - 13 Nov 2024

Keywords

1T′ phase
phase engineering
photoinduced charge transfer
surface-enhanced Raman scattering
two-dimensional transition metal dichalcogenides

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10.1021/acs.nanolett.4c03924

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title = "Phase-Engineered Transition Metal Dichalcogenides for Highly Efficient Surface-Enhanced Raman Scattering",

abstract = "Phase engineering of two-dimensional (2D) transition metal dichalcogenides (TMDs) is an attractive avenue to construct new surface-enhanced Raman scattering (SERS) substrates. Herein, 2D WS2 and MoS2 monolayers with high-purity distorted octahedral phase (1T′) are prepared for highly sensitive SERS detection of analytes (e.g., rhodamine 6G, rhodamine B and crystal violet). 1T′-WS2 and 1T′-MoS2 monolayers show the detection limits of 8.28 × 10-12 and 8.57 × 10-11 M for rhodamine 6G, with the enhancement factors of 4.6 × 108 and 3.9 × 107, respectively, which are comparable to noble-metal substrates, outperforming semiconducting 2H-W(Mo)S2 monolayers and most of the reported non-noble-metal substrates. First-principles density functional theory calculations show that their Raman enhancement effect is mainly ascribed to highly efficient interfacial charge transfer between the 1T′-W(Mo)S2 monolayers and analytes. Our study reveals that 2D TMDs with semimetallic 1T′ phase are promising as next-generation SERS substrates.",

keywords = "1T′ phase, phase engineering, photoinduced charge transfer, surface-enhanced Raman scattering, two-dimensional transition metal dichalcogenides",

author = "Ying Zhang and Zhenyu Shi and Haoyun Cui and Quankun Xia and Fengping Liu and Zhenhai Wang and Jia Wang and Huacheng Fan and Chi Shu and Bo Chen and Hai Li and Zhuangchai Lai and Zhimin Luo and Wei Zheng and Lianhui Wang and Zhiwei Huang",

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year = "2024",

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doi = "10.1021/acs.nanolett.4c03924",

language = "英语",

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TY - JOUR

T1 - Phase-Engineered Transition Metal Dichalcogenides for Highly Efficient Surface-Enhanced Raman Scattering

AU - Zhang, Ying

AU - Shi, Zhenyu

AU - Cui, Haoyun

AU - Xia, Quankun

AU - Liu, Fengping

AU - Wang, Zhenhai

AU - Wang, Jia

AU - Fan, Huacheng

AU - Shu, Chi

AU - Chen, Bo

AU - Li, Hai

AU - Lai, Zhuangchai

AU - Luo, Zhimin

AU - Zheng, Wei

AU - Wang, Lianhui

AU - Huang, Zhiwei

PY - 2024/11/13

Y1 - 2024/11/13

N2 - Phase engineering of two-dimensional (2D) transition metal dichalcogenides (TMDs) is an attractive avenue to construct new surface-enhanced Raman scattering (SERS) substrates. Herein, 2D WS2 and MoS2 monolayers with high-purity distorted octahedral phase (1T′) are prepared for highly sensitive SERS detection of analytes (e.g., rhodamine 6G, rhodamine B and crystal violet). 1T′-WS2 and 1T′-MoS2 monolayers show the detection limits of 8.28 × 10-12 and 8.57 × 10-11 M for rhodamine 6G, with the enhancement factors of 4.6 × 108 and 3.9 × 107, respectively, which are comparable to noble-metal substrates, outperforming semiconducting 2H-W(Mo)S2 monolayers and most of the reported non-noble-metal substrates. First-principles density functional theory calculations show that their Raman enhancement effect is mainly ascribed to highly efficient interfacial charge transfer between the 1T′-W(Mo)S2 monolayers and analytes. Our study reveals that 2D TMDs with semimetallic 1T′ phase are promising as next-generation SERS substrates.

AB - Phase engineering of two-dimensional (2D) transition metal dichalcogenides (TMDs) is an attractive avenue to construct new surface-enhanced Raman scattering (SERS) substrates. Herein, 2D WS2 and MoS2 monolayers with high-purity distorted octahedral phase (1T′) are prepared for highly sensitive SERS detection of analytes (e.g., rhodamine 6G, rhodamine B and crystal violet). 1T′-WS2 and 1T′-MoS2 monolayers show the detection limits of 8.28 × 10-12 and 8.57 × 10-11 M for rhodamine 6G, with the enhancement factors of 4.6 × 108 and 3.9 × 107, respectively, which are comparable to noble-metal substrates, outperforming semiconducting 2H-W(Mo)S2 monolayers and most of the reported non-noble-metal substrates. First-principles density functional theory calculations show that their Raman enhancement effect is mainly ascribed to highly efficient interfacial charge transfer between the 1T′-W(Mo)S2 monolayers and analytes. Our study reveals that 2D TMDs with semimetallic 1T′ phase are promising as next-generation SERS substrates.

KW - 1T′ phase

KW - phase engineering

KW - photoinduced charge transfer

KW - surface-enhanced Raman scattering

KW - two-dimensional transition metal dichalcogenides

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U2 - 10.1021/acs.nanolett.4c03924

DO - 10.1021/acs.nanolett.4c03924

M3 - 文章

C2 - 39494941

AN - SCOPUS:85208178720

SN - 1530-6984

VL - 24

SP - 14293

EP - 14301

JO - Nano Letters

JF - Nano Letters

IS - 45

ER -

Phase-Engineered Transition Metal Dichalcogenides for Highly Efficient Surface-Enhanced Raman Scattering

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Keywords

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