期刊
APPLIED MATERIALS TODAY
卷 20, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.apmt.2020.100718
关键词
Transition metal dichalcogenide; 2D PtTe2; Stretchable electronics; Wearable heater; Kirigami
资金
- National Science Foundation [ECCS-1809112, CMMI-1728390]
- Korea Institute of Energy Technology Evaluation and Planning (KETEP)
- Ministry of Trade, Industry & Energy (MOTIE) of the Republic of Korea [20173010013340]
- University of Central Florida
- Creative Materials Discovery Program through the National Research Foundation of Korea (NRF) - Ministry of Science, ICT and Future Planning [NRF-2019M3D1A1069793]
With increasing interests in emergent wearable technologies such as e-skin healthcare devices, it is essential to develop new materials that can satisfy their demanded attributes; e.g., mechanical strain-invariant electrical and thermal properties. In this regard, two-dimensional (2D) transition metal dichalcogenide (TMD) layered materials have received tremendous attention owing to their intrinsic suitability, such as large tolerance limits under mechanical deformation coupled with decent electrical and thermal properties. However, these intrinsic advantages are often compromised upon their large wafer-scale integrations onto deformable substrates, which is commonly observed with conventional liquid-based or mechanical exfoliation approaches. In this paper, we demonstrate high-performance electrically-stretchable heaters by combining 2D platinum ditelluride (PtTe2) layers - a relatively unexplored class of 2D TMDs - with a strain engineering design scheme. We directly grew wafer-scale 2D PtTe2 layers on soft polyimide (PI) substrates by taking advantage of their low growth temperature. We verified their intrinsically low sheet resistance as low as 19.4 Omega/ EI (thus, high electrical conductivity), which is superior to most other 2D TMDs. We then explored their Joule heating efficiencies and demonstrated they greatly surpass the performances of previously explored flexible heaters employing state-of-the-art nanomaterials including graphene, silver nanowires (Ag NWs), carbon nanotubes (CNTs) and their hybrids. By employing Kirigami patterning approaches for judicious strain engineering, we developed high-efficiency skin attachable 2D PtTe2 layers-based Kirigami heaters, which exhibited nearly strain-invariant excellent electrical-thermal properties; e.g., voltage-driven reliable heat generation upon a cyclic application/termination of 70% tensile stretch for 10 0 0 times. We believe this study on intrinsically metallic 2D layered material will open up new venues for futuristic high-performance large-scale stretchable electronic applications of wearable thermotherapy, e-textile, and soft actuators. (c) 2020 Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据