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Unit-Cell-Thick Oxide Synthesis by Film-Based Scavenging
Pendse, S; Jiang, J; Guo, YW; Zhang, LF; Chen, ZZ; Lu, ZH; Wang, YD; Hu, Y; Li, SM; Feng, J; Lu, TM; Sun, YY; Shi, J
2020-04-16
Source PublicationJOURNAL OF PHYSICAL CHEMISTRY C
ISSN1932-7447
Issue15Pages:8394
SubtypeArticle
AbstractWith the influx of flexible electronics as well as the emergence or prediction of unique phenomena in two-dimensional forms of materials, epitaxy at weakly coupled interfaces is gaining momentum as a feasible technique to develop nanostructured and two-dimensional materials. The weak substrate-film chemical interaction expected in this method of epitaxy has been believed to be crucial in enabling not only the formation of sharp heterostructures but also the mechanical exfoliation of the epilayer. In this report, we unravel an unconventional understanding of epitaxy at weakly coupled interfaces, entailing ions of the van der Waals substrate being scavenged by the growing film, resulting in the formation of a distinct and uniform unit-cell-thick interfacial layer. Using a layered Dion- Jacobson perovskite as the substrate and VO2 as the growing epilayer, we show that VO2 scavenges ions from the substrate and forms an epitaxial vanadate compound. Additionally, the crystal anisotropy of the substrate significantly modifies the energy landscape for diffusion of ions and leads to the creation of a unit-cell-thick epitaxial Aurivillius phase at the interface, predicted to exhibit the ferroelectric Rashba-Dresselhaus effect. The scavenging effect, interfaced with an anisotropic low-dimensional substrate, opens a new window to develop two-dimensional flexible components for future electronics.
DOI10.1021/acs.jpcc.0c00578
WOS KeywordGROWTH ; VAN ; NANOSTRUCTURES ; HETEROEPITAXY ; FABRICATION ; TRANSITION ; BI5NB3O15 ; COMPONENT ; EPITAXY ; LAYERS
Language英语
WOS Research AreaChemistry ; Science & Technology - Other Topics ; Materials Science
PublisherAMER CHEMICAL SOC
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Document Type期刊论文
Identifierhttp://ir.sic.ac.cn/handle/331005/28132
Collection中国科学院上海硅酸盐研究所
Recommended Citation
GB/T 7714
Pendse, S,Jiang, J,Guo, YW,et al. Unit-Cell-Thick Oxide Synthesis by Film-Based Scavenging[J]. JOURNAL OF PHYSICAL CHEMISTRY C,2020(15):8394.
APA Pendse, S.,Jiang, J.,Guo, YW.,Zhang, LF.,Chen, ZZ.,...&Shi, J.(2020).Unit-Cell-Thick Oxide Synthesis by Film-Based Scavenging.JOURNAL OF PHYSICAL CHEMISTRY C(15),8394.
MLA Pendse, S,et al."Unit-Cell-Thick Oxide Synthesis by Film-Based Scavenging".JOURNAL OF PHYSICAL CHEMISTRY C .15(2020):8394.
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