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Room-Temperature Ferroelectricity in Hexagonally Layered alpha-In2Se3 Nanoflakes down to the Monolayer Limit
Xue, Fei1; Hu, Weijin2; Lee, Ko-Chun3; Lu, Li-Syuan4; Zhang, Junwei1; Tang, Hao-Ling1; Han, Ali1; Hsu, Wei-Ting4; Tu, Shaobo1; Chang, Wen-Hao4; Lien, Chen-Hsin3; He, Jr-Hau5; Zhang, Zhidong2; Li, Lain-Jong1,6; Zhang, Xixiang1
Corresponding AuthorXue, Fei(xuefei0828@gmail.com) ; Li, Lain-Jong(ljliv@tsmc.com) ; Zhang, Xixiang(xixiang.zhang@kaust.edu.sa)
2018-12-12
Source PublicationADVANCED FUNCTIONAL MATERIALS
ISSN1616-301X
Volume28Issue:50Pages:7
Abstract2D ferroelectric material has emerged as an attractive building block for high density data storage nanodevices. Although monolayer van der Waals ferroelectrics have been theoretically predicted, a key experimental breakthrough for such calculations is still not realized. Here, hexagonally stacking alpha-In2Se3 nanoflake, a rarely studied van der Waals polymorph, is reported to exhibit out-of-plane (OOP) and in-plane (IP) ferroelectricity at room temperature. Ferroelectric multidomain states in a hexagonal alpha-In2Se3 nanoflake with uniform thickness can survive to 6 nm. Most strikingly, the electric-field-induced polarization switching and hysteresis loop are, respectively, observed down to the bilayer and monolayer (approximate to 1.2 nm) thicknesses, which designates it as the thinnest layered ferroelectric and verifies the corresponding theoretical calculation. In addition, two types of ferroelectric nanodevices employing the OOP and IP polarizations in 2H alpha-In2Se3 are developed, which are applicable for nonvolatile memories and heterostructure-based nanoelectronics/optoelectronics.
Keywordhexagonal alpha-In2Se3 layered 2D materials monolayer room-temperature ferroelectricity
Funding OrganizationKing Abdullah University of Science and Technology (KAUST) Office of Sponsored Research (OSR) ; Hundred Talents Program of the Chinese Academy of Sciences ; Ministry of Science and Technology (MOST) of Taiwan ; Center for Emergent Functional Matter Science (CEFMS) of NCTU
DOI10.1002/adfm.201803738
Indexed BySCI
Language英语
Funding ProjectKing Abdullah University of Science and Technology (KAUST) Office of Sponsored Research (OSR)[CRF-2015-2634-CRG4] ; King Abdullah University of Science and Technology (KAUST) Office of Sponsored Research (OSR)[CRF-2016-2996-CRG5] ; Hundred Talents Program of the Chinese Academy of Sciences ; Ministry of Science and Technology (MOST) of Taiwan[105-2119-M-009-014-MY3] ; Ministry of Science and Technology (MOST) of Taiwan[107-2112-M-009-024-MY3] ; Center for Emergent Functional Matter Science (CEFMS) of NCTU
WOS Research AreaChemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
WOS SubjectChemistry, Multidisciplinary ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter
WOS IDWOS:000456421000002
PublisherWILEY-V C H VERLAG GMBH
Citation statistics
Cited Times:54[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/131308
Collection中国科学院金属研究所
Corresponding AuthorXue, Fei; Li, Lain-Jong; Zhang, Xixiang
Affiliation1.King Abdullah Univ Sci & Technol, Phys Sci & Engn Div, Thuwal 239556900, Saudi Arabia
2.Chinese Acad Sci, IMR, Shenyang Natl Lab Mat Sci, Shenyang 110016, Liaoning, Peoples R China
3.Natl TsingHua Univ, Inst Elect Engn, Hsinchu 30013, Taiwan
4.Natl Chiao Tung Univ, Dept Electrophys, Hsinchu 30010, Taiwan
5.King Abdullah Univ Sci & Technol, Comp Elect & Math Sci & Engn Div, Thuwal 239556900, Saudi Arabia
6.TSMC, Corp Res & Chief Technol Off, Hsinchu 30075, Taiwan
Recommended Citation
GB/T 7714
Xue, Fei,Hu, Weijin,Lee, Ko-Chun,et al. Room-Temperature Ferroelectricity in Hexagonally Layered alpha-In2Se3 Nanoflakes down to the Monolayer Limit[J]. ADVANCED FUNCTIONAL MATERIALS,2018,28(50):7.
APA Xue, Fei.,Hu, Weijin.,Lee, Ko-Chun.,Lu, Li-Syuan.,Zhang, Junwei.,...&Zhang, Xixiang.(2018).Room-Temperature Ferroelectricity in Hexagonally Layered alpha-In2Se3 Nanoflakes down to the Monolayer Limit.ADVANCED FUNCTIONAL MATERIALS,28(50),7.
MLA Xue, Fei,et al."Room-Temperature Ferroelectricity in Hexagonally Layered alpha-In2Se3 Nanoflakes down to the Monolayer Limit".ADVANCED FUNCTIONAL MATERIALS 28.50(2018):7.
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