Rational Kinetics Control toward Universal Growth of 2D Vertically Stacked Heterostructures

Rational Kinetics Control toward Universal Growth of 2D Vertically Stacked Heterostructures

© 2019 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

Bibliographische Detailangaben
Veröffentlicht in:Advanced materials (Deerfield Beach, Fla.). - 1998. - 31(2019), 27 vom: 11. Juli, Seite e1901351
1. Verfasser: Li, Fang (VerfasserIn)
Weitere Verfasser: Feng, Yexin, Li, Ziwei, Ma, Chao, Qu, Junyu, Wu, Xueping, Li, Dong, Zhang, Xuehong, Yang, Tiefeng, He, Yunqiu, Li, Honglai, Hu, Xuelu, Fan, Peng, Chen, Ying, Zheng, Biyuan, Zhu, Xiaoli, Wang, Xiao, Duan, Xiangfeng, Pan, Anlian
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2019
Zugriff auf das übergeordnete Werk:Advanced materials (Deerfield Beach, Fla.)
Schlagworte:Journal Article active clusters heterostructures kinetics metal/chalcogenide ratio nucleation
Beschreibung
Zusammenfassung:© 2019 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
The rational control of the nucleation and growth kinetics to enable the growth of 2D vertical heterostructure remains a great challenge. Here, an in-depth study is provided toward understanding the growth mechanism of transition metal dichalcogenides (TMDCs) vertical heterostructures in terms of the nucleation and kinetics, where active clusters with a high diffusion barrier will induce the nucleation on top of the TMDC templates to realize vertical heterostructures. Based on this mechanism, in the experiment, through rational control of the metal/chalcogenide ratio in the vapor precursors, effective manipulation of the diffusion barrier of the active clusters and precise control of the heteroepitaxy direction are realized. In this way, a family of vertical TMDCs heterostructures is successfully designed. Optical studies and scanning transmission electron microscopy investigations exhibit that the resulting heterostructures possess atomic sharp interfaces without apparent alloying and defects. This study provides a deep understanding regarding the growth mechanism in terms of the nucleation and kinetics and the robust growth of 2D vertical heterostructures, defining a versatile material platform for fundamental studies and potential device applications
Beschreibung:Date Revised 01.10.2020
published: Print-Electronic
Citation Status PubMed-not-MEDLINE
ISSN:1521-4095
DOI:10.1002/adma.201901351