Flexible Foil of Hybrid TaS2 /Organic Superlattice: Fabrication and Electrical Properties

Peng-An Zong; Dongho Yoo; Peng Zhang; Yifeng Wang; Yujia Huang; Shujia Yin; Jia Liang; Yiliang Wang; Kunihito Koumoto; Chunlei Wan

doi:10.1002/smll.201901901

Flexible Foil of Hybrid TaS₂ /Organic Superlattice: Fabrication and Electrical Properties

Small. 2020 Apr;16(15):e1901901. doi: 10.1002/smll.201901901. Epub 2019 Jul 24.

Authors

Peng-An Zong¹, Dongho Yoo², Peng Zhang¹, Yifeng Wang³, Yujia Huang¹, Shujia Yin¹, Jia Liang¹, Yiliang Wang⁴, Kunihito Koumoto^{5

6

7}, Chunlei Wan¹

Affiliations

¹ State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing, 100084, P. R. China.
² Graduate School of Engineering, Nagoya University, Nagoya, 464-8603, Japan.
³ College of Materials Science and Engineering, Nanjing Tech University, Nanjing, 210009, China.
⁴ Department of Chemistry and Center of Nano and Micro Mechanics, Tsinghua University, Beijing, 100084, P. R. China.
⁵ Nagoya Industrial Science Research Institute, Nagoya University, Nagoya, 464-0819, Japan.
⁶ Center of Nanotechnology, King Abdulaziz University, Jeddah, 21589, Saudi Arabia.
⁷ School of Materials Science and Engineering, Guilin University of Electronic Technology, Guilin, Guangxi, 541004, P. R. China.

PMID: 31338976
DOI: 10.1002/smll.201901901

Abstract

TaS₂ nanolayers with reduced dimensionality show interesting physics, such as a gate-tunable phase transition and enhanced superconductivity, among others. Here, a solution-based strategy to fabricate a large-area foil of hybrid TaS₂ /organic superlattice, where [TaS₂ ] monolayers and organic molecules alternatively stack in atomic scale, is proposed. The [TaS₂ ] layers are spatially isolated with remarkably weakened interlayer bonding, resulting in lattice vibration close to that of TaS₂ monolayers. The foil also shows excellent mechanical flexibility together with a large electrical conductivity of 1.2 × 10³ S cm^-1 and an electromagnetic interference of 31 dB, among the highest values for solution-processed thin films of graphene and inorganic graphene analogs. The solution-based strategy reported herein can add a new dimension to manipulate the structure and properties of 2D materials and provide new opportunities for flexible nanoelectronic devices.

Keywords: TaS2; electrical conductivity; flexible; organic intercalation; superlattice.

Abstract

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