增强过氧化物复合氧化物薄膜远程外延的途径

IF 15.8 1区 材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY
Sangho Lee, Xinyuan Zhang, Pooya Abdollahi, Matthew R. Barone, Chengye Dong, Young Jin Yoo, Min-Kyu Song, Doyoon Lee, Jung-El Ryu, Jun-Hui Choi, Jae-Hyun Lee, Joshua A. Robinson, Darrell G. Schlom, Hyun S. Kum, Celesta S. Chang*, Ambrose Seo* and Jeehwan Kim*, 
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引用次数: 0

摘要

远程外延技术正在成为创造具有高结晶度的独立复杂氧化物薄膜的核心,这种薄膜可以作为堆叠具有独特功能的人工异质结构的理想构件。然而,目前还存在一些技术挑战,尤其是在包晶氧化物的远程外延过程中,由于其生长环境恶劣,石墨烯夹层难以存活。转移石墨烯通常用于创建远程外延模板,但由于石墨烯降解很容易观察到,因此在确保包晶薄膜的产量方面存在局限性,尤其是在进行脉冲激光沉积(PLD)生长时。在此,我们采用光谱椭偏仪,通过原位跟踪石墨烯光学特性的变化,确定在 PLD 过程中破坏石墨烯完整性的关键因素。为了缓解在 PLD 过程中观察到的问题,我们提出了一种基于分子束外延的替代生长策略,以生产单晶包晶膜。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Route to Enhancing Remote Epitaxy of Perovskite Complex Oxide Thin Films

Route to Enhancing Remote Epitaxy of Perovskite Complex Oxide Thin Films

Remote epitaxy is taking center stage in creating freestanding complex oxide thin films with high crystallinity that could serve as an ideal building block for stacking artificial heterostructures with distinctive functionalities. However, there exist technical challenges, particularly in the remote epitaxy of perovskite oxides associated with their harsh growth environments, making the graphene interlayer difficult to survive. Transferred graphene, typically used for creating a remote epitaxy template, poses limitations in ensuring the yield of perovskite films, especially when pulsed laser deposition (PLD) growth is carried out, since graphene degradation can be easily observed. Here, we employ spectroscopic ellipsometry to determine the critical factors that damage the integrity of graphene during PLD by tracking the change in optical properties of graphene in situ. To mitigate the issues observed in the PLD process, we propose an alternative growth strategy based on molecular beam epitaxy to produce single-crystalline perovskite membranes.

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来源期刊
ACS Nano
ACS Nano 工程技术-材料科学:综合
CiteScore
26.00
自引率
4.10%
发文量
1627
审稿时长
1.7 months
期刊介绍: ACS Nano, published monthly, serves as an international forum for comprehensive articles on nanoscience and nanotechnology research at the intersections of chemistry, biology, materials science, physics, and engineering. The journal fosters communication among scientists in these communities, facilitating collaboration, new research opportunities, and advancements through discoveries. ACS Nano covers synthesis, assembly, characterization, theory, and simulation of nanostructures, nanobiotechnology, nanofabrication, methods and tools for nanoscience and nanotechnology, and self- and directed-assembly. Alongside original research articles, it offers thorough reviews, perspectives on cutting-edge research, and discussions envisioning the future of nanoscience and nanotechnology.
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