DataVXACS Applied Nano MaterialsPaper
journal article·2025-01-17

Iptycene-Assisted Alignment of Chirality-Sorted SWCNTs for Field-Effect Transistors

Monika R. Snowdon, Ekaterina V. Sukhanova, Zakhar I. Popov, Shisheng Li, Leanddas Nurdiwijayanto, Takaaki Taniguchi, Shinsuke Ishihara, Takeshi Tanaka, Hiromichi Kataura, Kazuhito Tsukagoshi, Robert L. F. Liang, Marina Freire-Gormaly, Derek J. Schipper, Dmitry G. Kvashnin, Dai-Ming Tang

ACS Applied Nano Materials· Volume 8· Issue 2
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Source abstract

Abstract

Single-walled carbon nanotubes (SWCNTs) are ideal channel material candidates for energy-efficient nanoscale transistors; however, it is challenging to achieve uniform alignment of semiconducting SWCNTs with homogeneous chirality. Here, we report the proof-of-concept of using organized chirality-sorted SWCNTs via the alignment relay technique (ART), where iptycene molecules order the nanotubes through π–π interactions. Top-gated field-effect transistors (FETs) were fabricated with aligned (10,3) chirality SWCNTs as channels to show an I ON of 3.8 μA, an I ON /I OFF ratio of 2.9 × 10 6, and a carrier mobility of 10.08 cm 2 /(V s), which is enhanced by two magnitudes of order compared with a bundled SWCNT network channel. In addition, the ART was applied to align commercially available semiconducting SWCNTs to fabricate a chemiresistive gas sensor that showed prompt detection of 4 ppm ammonia (NH 3 ) with a sensitivity of 0.43 ± 0.04%/ppm, demonstrating a general approach to align SWCNTs for applications in electronic devices.
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Research context

NanomaterialsElectronic materials

OpenAlex topics: Mechanical and Optical Resonators · Carbon Nanotubes in Composites · Molecular Junctions and Nanostructures

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Waterloo Institute for Nanotechnology, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada

Research Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), Tsukuba 305-0044, Japan

Emanuel Institute of Biochemical Physics of RAS, 4 Kosygin Street, Moscow 119334, Russian Federation

Nanomaterials Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba Ibaraki 305-8565, Japan

Lassonde School of Engineering, York University, North York, Ontario M3J 2S5, Canada

Institute of Pure and Applied Sciences, University of Tsukuba, Tsukuba 305-8571, Japan

Funding

Japan Society for the Promotion of Science · Fusion Oriented REsearch for disruptive Science and Technology · National Institute for Materials Science · Natural Sciences and Engineering Research Council of Canada · Russian Ministry of Science and Higher Education

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