DataVXAdvanced Functional MaterialsPaper
journal article·2022-01

High‐Purity Monochiral Carbon Nanotubes with a 1.2 nm Diameter for High‐Performance Field‐Effect Transistors

Yahui Li, Miaomiao Zheng, Jian Yao, Wenbin Gong, Yijun Li, Jianshi Tang, Shun Feng, Ruyue Han, Qicheng Sui, Song Qiu, Lixing Kang, Hehua Jin, Dongming Sun, Qingwen Li

Advanced Functional Materials· Volume 32· Issue 1
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Source abstract

Abstract

Abstract Monochiral single‐walled carbon nanotubes (SWCNTs) are promising materials with potential applications in 3D integrated circuits and optoelectronic hybrid circuits. However, the purity and device performance of monochiral SWCNTs are still far lower than expected. Here, the authors demonstrate that specific monochiral SWCNTs can be wrapped by conjugated polymers containing pyridine units, and the supramolecular assemblies show surprising suspension stability even after high‐intensity ultracentrifugation. Additionally, two novel methods are developed, namely, enhanced ultracentrifugation (E‐UCG) and stepwise extraction processing (STEP), which successfully achieve isolation of (10,8) and (12,5) SWCNTs with respective diameters of 1.24 and 1.2 nm at high monochiral purity (92.3% and 95.6%). Their S11 absorption and fluorescence emission peaks are both at ≈1.5 µm (optical telecommunications C‐band). Both micro‐ and nanoscale field‐effect transistor (FET) devices can be fabricated from the as‐isolated (10,8) SWCNTs, and these FETs exhibit excellent electrical performance and a high semiconducting purity of up to 99.94%.
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Research context

PolymersNanomaterialsElectronic materials

OpenAlex topics: Carbon Nanotubes in Composites · Graphene research and applications · Mechanical and Optical Resonators

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

Affiliations

School of Nano‐Tech and Nano‐Bionics University of Science and Technology of China 96 Jinzhai Road Hefei 230026 China

Division of Advanced Nano‐Materials Suzhou Institute of Nanotech and Nano‐bionics Chinese Academy of Science 398 Ruoshui Road Suzhou 215123 China

Nano Science and Technology Institute University of Science and Technology of China 166 Ren'ai Road Suzhou 215123 China

School of Physical Science and Technology Shanghai Tech University 393 Middle Huaxia Road Pudong Shanghai 201210 China

School of Physics and Energy Xuzhou University of Technology Xuzhou 221018 China

Institute of Microelectronics Beijing Innovation Center for Future Chips (ICFC) Tsinghua University 30 Shuangqing Road Beijing 100084 China

Shenyang National Laboratory for Materials Science Institute of Metal Research Chinese Academy of Sciences 72 Wenhua Road Shenyang 110016 China

Funding

National Natural Science Foundation of China

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