Engineering covalently bonded 2D layered materials by self-intercalation

doi:10.1038/s41586-020-2241-9

GSTDTAP > 地球科学

DOI	10.1038/s41586-020-2241-9
	Engineering covalently bonded 2D layered materials by self-intercalation
	Shang, Jian 1; Ye, Gang 1; Shi, Ke 2; Wan, Yushun 1; Luo, Chuming 1; Aihara, Hideki 2; Geng, Qibin 1; Auerbach, Ashley 1; Li, Fang 1
	2020-05-01
发表期刊	NATURE
ISSN	0028-0836
EISSN	1476-4687
出版年	2020
卷号	581 期号:7807 页码:171-+
文章类型	Article
语种	英语
国家	Singapore; Peoples R China; Denmark
英文关键词	Two-dimensional (2D) materials(1-5) offer a unique platform from which to explore the physics of topology and many-body phenomena. New properties can be generated by filling the van der Waals gap of 2D materials with intercalants(6,7) however, post-growth intercalation has usually been limited to alkali metals(8-10). Here we show that the self-intercalation of native atoms(11,12) into bilayer transition metal dichalcogenides during growth generates a class of ultrathin, covalently bonded materials, which we name ic-2D. The stoichiometry of these materials is defined by periodic occupancy patterns of the octahedral vacancy sites in the van der Waals gap, and their properties can be tuned by varying the coverage and the spatial arrangement of the filled sites(7,13). By performing growth under high metal chemical potential(14,15) we can access a range of tantalum-intercalated TaS(Se)(y), including 25% Ta-intercalated Ta9S16, 33.3% Ta-intercalated Ta7S12, 50% Ta-intercalated Ta10S16, 66.7% Ta-intercalated Ta8Se12 (which forms a Kagome lattice) and 100% Ta-intercalated Ta9Se12. Ferromagnetic order was detected in some of these intercalated phases. We also demonstrate that self-intercalated V11S16, In11Se16 and FexTey can be grown under metal-rich conditions. Our work establishes self-intercalation as an approach through which to grow a new class of 2D materials with stoichiometry- or composition-dependent properties.
领域	地球科学 ; 气候变化 ; 资源环境
收录类别	SCI-E
WOS记录号	WOS:000532836000027
WOS关键词	ELECTRONIC-PROPERTIES ; TRANSITION ; MOS2 ; STABILITY
WOS类目	Multidisciplinary Sciences
WOS研究方向	Science & Technology - Other Topics
引用统计
文献类型	期刊论文
条目标识符	http://119.78.100.173/C666/handle/2XK7JSWQ/281048
专题	地球科学资源环境科学气候变化
作者单位	1.Univ Minnesota, Dept Vet & Biomed Sci, St Paul, MN 55108 USA; 2.Univ Minnesota, Dept Biochem Mol Biol & Biophys, Minneapolis, MN USA
推荐引用方式 GB/T 7714	Shang, Jian,Ye, Gang,Shi, Ke,et al. Engineering covalently bonded 2D layered materials by self-intercalation[J]. NATURE,2020,581(7807):171-+.
APA	Shang, Jian.,Ye, Gang.,Shi, Ke.,Wan, Yushun.,Luo, Chuming.,...&Li, Fang.(2020).Engineering covalently bonded 2D layered materials by self-intercalation.NATURE,581(7807),171-+.
MLA	Shang, Jian,et al."Engineering covalently bonded 2D layered materials by self-intercalation".NATURE 581.7807(2020):171-+.