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Quantum Confinement and Gas Sensing of Mechanically Exfoliated GaSe

文献类型：期刊论文

作者Wu, Yecun1; Zhang, Duan1,2; Lee, Kangho3,4; Duesberg, Georg S.3,4,5; Syrlybekov, Askar6; Liu, Xiao1; Abid, Mourad1; Abid, Mohamed1; Liu, Yanqi2; Zhang, Lisheng2
刊名ADVANCED MATERIALS TECHNOLOGIES
出版日期2017
卷号2期号:1页码:1-7
DOI10.1002/admt.201600197
文献子类Article
英文摘要GaSe layers with thicknesses ranging from a monolayer to 100 nm are successfully mechanically exfoliated for use in gas sensing. In combination with density functional theory calculations, general guidelines to determine the number of layers using Raman spectra are presented. With decreasing layer numbers, quantum confinement induces a red-shift for out-of-plane modes and a blue-shift for in-plane modes. The relative Raman shifts of the out-of-plane vibrational modes A'(1) (1(1)) and A'(1) (2(2))grow exponentially with decreasing stack thickness from 100 to 1 layers. Moreover, the change in firstorder temperature coefficient (chi) also increases exponentially as the number of layers is reduced, with the value of the first- order temperature coefficient of the A'(1)(2(2)) mode of monolayer GaSe (approximate to-1.99 x 10(-2) cm(-1) K-1) being almost double that of 100 layer GaSe (approximate to-1.22 x 10(-2) cm(-1) K-1). Finally, the exfoliated GaSe is used for gas sensing and shows high sensitivity, displaying a minimum detection limit of 4 ppm for NH3 at room temperature, confirming the potential of mechanically exfoliated GaSe in high- sensitivity gas sensors.
WOS关键词TRANSITION-METAL DICHALCOGENIDES ; DER-WAALS HETEROSTRUCTURES ; RAMAN-SCATTERING ; 2-DIMENSIONAL MATERIALS ; GALLIUM SELENIDE ; GRAPHENE ; SPECTRA ; SENSORS ; MOS2 ; MONOLAYER
语种英语
WOS记录号WOS:000398998700013
资助机构Beijing Institute of Technology Research Fund Program for Young Scholars ; Beijing Institute of Technology Research Fund Program for Young Scholars ; Beijing Institute of Technology Research Fund Program for Young Scholars ; Beijing Institute of Technology Research Fund Program for Young Scholars ; Beijing Institute of Technology Research Fund Program for Young Scholars ; Beijing Institute of Technology Research Fund Program for Young Scholars ; Beijing Institute of Technology Research Fund Program for Young Scholars ; Beijing Institute of Technology Research Fund Program for Young Scholars ; Saudi Aramco(6600028398) ; Saudi Aramco(6600028398) ; Saudi Aramco(6600028398) ; Saudi Aramco(6600028398) ; Saudi Aramco(6600028398) ; Saudi Aramco(6600028398) ; Saudi Aramco(6600028398) ; Saudi Aramco(6600028398) ; SFI(12/RC/2278 ; SFI(12/RC/2278 ; SFI(12/RC/2278 ; SFI(12/RC/2278 ; SFI(12/RC/2278 ; SFI(12/RC/2278 ; SFI(12/RC/2278 ; SFI(12/RC/2278 ; European Union(604391) ; European Union(604391) ; European Union(604391) ; European Union(604391) ; European Union(604391) ; European Union(604391) ; European Union(604391) ; European Union(604391) ; MSE Kazakhstan ("NU-LBNL")(0115PK03029) ; MSE Kazakhstan ("NU-LBNL")(0115PK03029) ; MSE Kazakhstan ("NU-LBNL")(0115PK03029) ; MSE Kazakhstan ("NU-LBNL")(0115PK03029) ; MSE Kazakhstan ("NU-LBNL")(0115PK03029) ; MSE Kazakhstan ("NU-LBNL")(0115PK03029) ; MSE Kazakhstan ("NU-LBNL")(0115PK03029) ; MSE Kazakhstan ("NU-LBNL")(0115PK03029) ; PI_10/IN.1/I3030) ; PI_10/IN.1/I3030) ; PI_10/IN.1/I3030) ; PI_10/IN.1/I3030) ; PI_10/IN.1/I3030) ; PI_10/IN.1/I3030) ; PI_10/IN.1/I3030) ; PI_10/IN.1/I3030) ; Beijing Institute of Technology Research Fund Program for Young Scholars ; Beijing Institute of Technology Research Fund Program for Young Scholars ; Beijing Institute of Technology Research Fund Program for Young Scholars ; Beijing Institute of Technology Research Fund Program for Young Scholars ; Beijing Institute of Technology Research Fund Program for Young Scholars ; Beijing Institute of Technology Research Fund Program for Young Scholars ; Beijing Institute of Technology Research Fund Program for Young Scholars ; Beijing Institute of Technology Research Fund Program for Young Scholars ; Saudi Aramco(6600028398) ; Saudi Aramco(6600028398) ; Saudi Aramco(6600028398) ; Saudi Aramco(6600028398) ; Saudi Aramco(6600028398) ; Saudi Aramco(6600028398) ; Saudi Aramco(6600028398) ; Saudi Aramco(6600028398) ; SFI(12/RC/2278 ; SFI(12/RC/2278 ; SFI(12/RC/2278 ; SFI(12/RC/2278 ; SFI(12/RC/2278 ; SFI(12/RC/2278 ; SFI(12/RC/2278 ; SFI(12/RC/2278 ; European Union(604391) ; European Union(604391) ; European Union(604391) ; European Union(604391) ; European Union(604391) ; European Union(604391) ; European Union(604391) ; European Union(604391) ; MSE Kazakhstan ("NU-LBNL")(0115PK03029) ; MSE Kazakhstan ("NU-LBNL")(0115PK03029) ; MSE Kazakhstan ("NU-LBNL")(0115PK03029) ; MSE Kazakhstan ("NU-LBNL")(0115PK03029) ; MSE Kazakhstan ("NU-LBNL")(0115PK03029) ; MSE Kazakhstan ("NU-LBNL")(0115PK03029) ; MSE Kazakhstan ("NU-LBNL")(0115PK03029) ; MSE Kazakhstan ("NU-LBNL")(0115PK03029) ; PI_10/IN.1/I3030) ; PI_10/IN.1/I3030) ; PI_10/IN.1/I3030) ; PI_10/IN.1/I3030) ; PI_10/IN.1/I3030) ; PI_10/IN.1/I3030) ; PI_10/IN.1/I3030) ; PI_10/IN.1/I3030)
源URL[http://ir.hfcas.ac.cn:8080/handle/334002/31822]  
专题合肥物质科学研究院_中科院等离子体物理研究所
作者单位1.Beijing Inst Technol, Sch Phys, Beijing Key Lab Nanophoton & Ultrafine Optoelect, Beijing 100081, Peoples R China
2.Capital Normal Univ, Elementary Educ Coll, Beijing Key Lab Nanophoton & Nanostruct, Beijing 100048, Peoples R China
3.Trinity Coll Dublin, CRANN, Dublin 2, Ireland
4.Trinity Coll Dublin, AMBER, Dublin 2, Ireland
5.Trinity Coll Dublin, Sch Chem, Dublin 2, Ireland
6.Nazarbayev Univ, 53 Kabanbai Batyra Ave, Astana 010000, Kazakhstan
7.Korea Basic Sci Inst, Western Seoul Ctr, Seoul 03579, South Korea
8.Korea Basic Sci Inst, Chuncheon Ctr, Chunchon 24341, South Korea
9.Korea Res Inst Stand & Sci, Div Ind Metrol, Daejeon 305340, South Korea
10.Haidian Teachers Training Coll, Expt Sch, Beijing 100097, Peoples R China
推荐引用方式
GB/T 7714		 Wu, Yecun,Zhang, Duan,Lee, Kangho,et al. Quantum Confinement and Gas Sensing of Mechanically Exfoliated GaSe[J]. ADVANCED MATERIALS TECHNOLOGIES,2017,2(1):1-7.
APA Wu, Yecun.,Zhang, Duan.,Lee, Kangho.,Duesberg, Georg S..,Syrlybekov, Askar.,...&Wu, Han-Chun.(2017).Quantum Confinement and Gas Sensing of Mechanically Exfoliated GaSe.ADVANCED MATERIALS TECHNOLOGIES,2(1),1-7.
MLA Wu, Yecun,et al."Quantum Confinement and Gas Sensing of Mechanically Exfoliated GaSe".ADVANCED MATERIALS TECHNOLOGIES 2.1(2017):1-7.

入库方式： OAI收割

来源：合肥物质科学研究院

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