• 文献标题:   Growth Model of van der Waals Epitaxy of Films: A Case of AIN Films on Multilayer Graphene/SiC
  • 文献类型:   Article
  • 作  者:   XU Y, CAO B, LI ZY, CAI DM, ZHANG YM, REN GQ, WANG JF, SHI L, WANG CH, XU K
  • 作者关键词:   van der waals epitaxy, growth model, orientation relationship, multilayer graphene, aln film
  • 出版物名称:   ACS APPLIED MATERIALS INTERFACES
  • ISSN:   1944-8244 EI 1944-8252
  • 通讯作者地址:   Chinese Acad Sci
  • 被引频次:   8
  • DOI:   10.1021/acsami.7b14494
  • 出版年:   2017

▎ 摘  要

"Volmer-Weber" island nucleation and step-flow growth model are the classical processes of the conventional epitaxy of,films, However, a growth model.of van.der Waals epitaxy (vdWB) of films is still not very well-documented. Here, we present an example of vdWE of AIN films on-multilayer graphene (MI,C)/SiC by hydride vapor phase epitaxy at a high temperature pf 1100 C and reveal the orientation relationship of AIN, MLG, and SiC as (0001)[1-100](AlN)parallel to(0001)[1-100]MLG parallel to(0001)[11-20](SiC) which suggests that the vdWE heterointerface is not an usual-covalent bond and no excessive strain during "the growth process owing to the incommensurate in-plane lattices. Remarkably, zigzag cracks are formed because "Of the anisotropy of Strain after the films are cooled down to room temperature, indicating that the growth model of vdWE is different "from that of conventional epitaxy. It is a layer-by-layer "epitaxy, and a planar substrate without a miscut angle is essential for obtaining single-crystalline films. Additionally, the films can be transferred to foreign substrates by direct mechanical exfoliation without any stressor layer. An ultraviolet photosensor device illustrates an example of III-nitride heterogeneous integration application. Our work demonstrates an excellent step toward the vdWE varieties of compound films on 2D materials for the applications of transferrable' heterogeneous integration in future.