Ultrafast Heating for Intrinsic Properties of Atomically Thin Two-Dimensional Materials on Plastic Substrates

Authors
Kim, Ho YoungLee, Jae-WonOh, Hye MinBaeg, Kang-JunJung, SunshinYang, Ho-SoonLee, WonkiHwang, Jun YeonKim, Keun SooJeong, Seung YolHan, Joong TarkJeong, Mun SeokLee, Geon-WoongJeong, Hee Jin
Issue Date
2016-11-16
Publisher
American Chemical Society
Citation
ACS Applied Materials & Interfaces, v.8, no.45, pp.31222 - 31230
Abstract
Despite recent progress in producing flexible and stretchable electronics based on two-dimensional (2D) nanosheets, their intrinsic properties are often degraded by the presence of polymeric residues that remain attached to the 2D nanosheet surfaces following fabrication. Further breakthroughs are therefore keenly awaited to obtain clean surfaces compatible with flexible applications. Here, we report a method that allows the 2D nanosheets to be intrinsically integrated onto flexible substrates. The method involves thermal decomposition of polymeric residues by microwave-induced ultrafast heating of the surface without affecting the underlying flexible substrate. Mapping the C=O stretching mode by Fourier-transform infrared spectroscopy in combination with atomic force microscopy confirms elimination of the polymeric residues from the 2D nanosheet surface. Flexible devices prepared using microwave-cleaned 2D nanosheets show enhanced electrical, optical, and electrothermal performances. This simple technique is applicable to a wide range of 2D nanomaterials and represents an important advance in the field of flexible devices.
Keywords
LARGE-AREA; GRAPHENE FILMS; TRANSPARENT; OXIDE; MULTIFUNCTIONALITY; TRANSPORT; COPPER; LARGE-AREA; GRAPHENE FILMS; TRANSPARENT; OXIDE; MULTIFUNCTIONALITY; TRANSPORT; COPPER; microwave; ultrafast heating; 2D nanomaterial; selective heating; flexible device
ISSN
1944-8244
URI
https://pubs.kist.re.kr/handle/201004/123427
DOI
10.1021/acsami.6b09677
Appears in Collections:
KIST Article > 2016
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