@article{078150f4dea6404fb0009dfac18c2c98,
title = "Mechanisms of Interface Cleaning in Heterostructures Made from Polymer-Contaminated Graphene",
abstract = "Heterostructures obtained from layered assembly of 2D materials such as graphene and hexagonal boron nitride have potential in the development of new electronic devices. Whereas various materials techniques can now produce macroscopic scale graphene, the construction of similar size heterostructures with atomically clean interfaces is still unrealized. A primary barrier has been the inability to remove polymeric residues from the interfaces that arise between layers when fabricating heterostructures. Here, the interface cleaning problem of polymer-contaminated heterostructures is experimentally studied from an energy viewpoint. With this approach, it is established that the interface cleaning mechanism involves a combination of thermally activated polymer residue mobilization and their mechanical actuation. This framework allows a systematic approach for fabricating record large-area clean heterostructures from polymer-contaminated graphene. These heterostructures provide state-of-the-art electronic performance. This study opens new strategies for the scalable production of layered materials heterostructures.",
keywords = "graphene, heterostructures, interface cleaning, transport",
author = "Zhujun Huang and Edoardo Cuniberto and Suji Park and Kim Kisslinger and Qin Wu and Takashi Taniguchi and Kenji Watanabe and Yager, {Kevin G.} and Davood Shahrjerdi",
note = "Funding Information: The authors acknowledge partial financial support from NSF (grants EECS‐ 1940764). K.W. and T.T. acknowledge support from the Elemental Strategy Initiative conducted by the MEXT, Japan (Grant Number JPMXP0112101001) and JSPS KAKENHI (Grant Numbers 19H05790, 20H00354 and 21H05233). This work was performed in part at the ASRC NanoFabrication Facility of CUNY in New York. This research used resources of the Center for Functional Nanomaterials (CFN), which is a U.S. Department of Energy Office of Science User Facility, at Brookhaven National Laboratory under Contract No. DE‐SC0012704. D.S. acknowledges Prof. J. Uichanco at the University of Michigan Ann Arbor and Dr. C. Black at the Center for Functional Nanomaterials at BNL for helpful discussions. Funding Information: The authors acknowledge partial financial support from NSF (grants EECS- 1940764). K.W. and T.T. acknowledge support from the Elemental Strategy Initiative conducted by the MEXT, Japan (Grant Number JPMXP0112101001) and JSPS KAKENHI (Grant Numbers 19H05790, 20H00354 and 21H05233). This work was performed in part at the ASRC NanoFabrication Facility of CUNY in New York. This research used resources of the Center for Functional Nanomaterials (CFN), which is a U.S. Department of Energy Office of Science User Facility, at Brookhaven National Laboratory under Contract No. DE-SC0012704. D.S. acknowledges Prof. J. Uichanco at the University of Michigan Ann Arbor and Dr. C. Black at the Center for Functional Nanomaterials at BNL for helpful discussions. Publisher Copyright: {\textcopyright} 2022 Wiley-VCH GmbH.",
year = "2022",
month = may,
day = "19",
doi = "10.1002/smll.202201248",
language = "English (US)",
volume = "18",
journal = "Small",
issn = "1613-6810",
publisher = "Wiley-VCH Verlag",
number = "20",
}