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Wang S, Levshov DI, Otsuka K, Zhang BW, Zheng Y, Feng Y, Liu M, Kauppinen EI, Xiang R, Chiashi S, Wenseleers W, Cambré S, Maruyama S. Evaluating the Efficiency of Boron Nitride Coating in Single-Walled Carbon-Nanotube-Based 1D Heterostructure Films by Optical Spectroscopy. ACS Nano 2024; 18:9917-9928. [PMID: 38548470 PMCID: PMC11008362 DOI: 10.1021/acsnano.3c09615] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/04/2023] [Revised: 03/04/2024] [Accepted: 03/07/2024] [Indexed: 04/10/2024]
Abstract
Single-walled carbon nanotube (SWCNT) films exhibit exceptional optical and electrical properties, making them highly promising for scalable integrated devices. Previously, we employed SWCNT films as templates for the chemical vapor deposition (CVD) synthesis of one-dimensional heterostructure films where boron nitride nanotubes (BNNTs) and molybdenum disulfide nanotubes (MoS2NTs) were coaxially nested over the SWCNT networks. In this work, we have further refined the synthesis method to achieve precise control over the BNNT coating in SWCNT@BNNT heterostructure films. The resulting structure of the SWCNT@BNNT films was thoroughly characterized using a combination of electron microscopy, UV-vis-NIR spectroscopy, Fourier-transform infrared (FT-IR) spectroscopy, and Raman spectroscopy. Specifically, we investigated the pressure effect induced by BNNT wrapping on the SWCNTs in the SWCNT@BNNT heterostructure film and demonstrated that the shifts of the SWCNT's G and 2D (G') modes in Raman spectra can be used as a probe of the efficiency of BNNT coating. In addition, we studied the impact of vacuum annealing on the removal of the initial doping in SWCNTs, arising from exposure to ambient atmosphere, and examined the effect of MoO3 doping in SWCNT films by using UV-vis-NIR spectroscopy and Raman spectroscopy. We show that through correlation analysis of the G and 2D (G') modes in Raman spectra, it is possible to discern distinct types of doping effects as well as the influence of applied pressure on the SWCNTs within SWCNT@BNNT heterostructure films. This work contributes to a deeper understanding of the strain and doping effect in both SWCNTs and SWCNT@BNNTs, thereby providing valuable insights for future applications of carbon-nanotube-based one-dimensional heterostructures.
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Affiliation(s)
- Shuhui Wang
- Department
of Mechanical Engineering, The University
of Tokyo, Tokyo 113-8656, Japan
| | - Dmitry I. Levshov
- Department
of Mechanical Engineering, The University
of Tokyo, Tokyo 113-8656, Japan
- Nanostructured
and Organic Optical and Electronic Materials, Department of Physics, University of Antwerp, Antwerp 2610, Belgium
| | - Keigo Otsuka
- Department
of Mechanical Engineering, The University
of Tokyo, Tokyo 113-8656, Japan
| | - Bo-Wen Zhang
- Department
of Mechanical Engineering, The University
of Tokyo, Tokyo 113-8656, Japan
| | - Yongjia Zheng
- Department
of Mechanical Engineering, The University
of Tokyo, Tokyo 113-8656, Japan
- State
Key Laboratory of Fluid Power and Mechatronic Systems, School of Mechanical
Engineering, Zhejiang University, Hangzhou 310027, People’s Republic of China
| | - Ya Feng
- Department
of Mechanical Engineering, The University
of Tokyo, Tokyo 113-8656, Japan
| | - Ming Liu
- Department
of Mechanical Engineering, The University
of Tokyo, Tokyo 113-8656, Japan
| | - Esko I. Kauppinen
- Department
of Applied Physics, Aalto University School
of Science, Espoo 15100, FI-00076 Aalto, Finland
| | - Rong Xiang
- Department
of Mechanical Engineering, The University
of Tokyo, Tokyo 113-8656, Japan
- State
Key Laboratory of Fluid Power and Mechatronic Systems, School of Mechanical
Engineering, Zhejiang University, Hangzhou 310027, People’s Republic of China
| | - Shohei Chiashi
- Department
of Mechanical Engineering, The University
of Tokyo, Tokyo 113-8656, Japan
| | - Wim Wenseleers
- Nanostructured
and Organic Optical and Electronic Materials, Department of Physics, University of Antwerp, Antwerp 2610, Belgium
| | - Sofie Cambré
- Nanostructured
and Organic Optical and Electronic Materials, Department of Physics, University of Antwerp, Antwerp 2610, Belgium
| | - Shigeo Maruyama
- Department
of Mechanical Engineering, The University
of Tokyo, Tokyo 113-8656, Japan
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Liu M, Hisama K, Zheng Y, Maruyama M, Seo S, Anisimov A, Inoue T, Kauppinen EI, Okada S, Chiashi S, Xiang R, Maruyama S. Photoluminescence from Single-Walled MoS 2 Nanotubes Coaxially Grown on Boron Nitride Nanotubes. ACS Nano 2021; 15:8418-8426. [PMID: 33881302 DOI: 10.1021/acsnano.0c10586] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Single-walled and multiwalled molybdenum disulfide (MoS2) nanotubes have been coaxially synthesized on small-diameter boron nitride nanotubes (BNNTs) that are obtained from removing single-walled carbon nanotubes (SWCNTs) in heteronanotubes of SWCNTs coated by BNNTs. The photoluminescence (PL) from single-walled MoS2 nanotubes supported by core BNNTs is observed in this work, which evidences the direct bandgap structure of single-walled MoS2 nanotubes with a diameter around 6-7 nm. The observation is consistent with our DFT results that the single-walled MoS2 nanotube changes from an indirect-gap to a direct-gap semiconductor when the diameter of a nanotube is more than around 5.2 nm. On the other hand, when there are SWCNTs inside the heteronanotubes of BNNTs and single-walled MoS2 nanotubes, the PL signal from MoS2 nanotubes is considerably quenched. The charge transfer and energy transfer between SWCNTs and single-walled MoS2 nanotubes were examined through characterizations by PL, X-ray photoelectron spectroscopy, and Raman spectroscopy. Moreover, the PL signal from multiwalled MoS2 nanotubes is significantly quenched. Single-walled and multiwalled MoS2 nanotubes exhibit different Raman features in both resonant and nonresonant Raman spectra.
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Affiliation(s)
- Ming Liu
- Department of Mechanical Engineering, The University of Tokyo, Tokyo 113-8656, Japan
| | - Kaoru Hisama
- Department of Mechanical Engineering, The University of Tokyo, Tokyo 113-8656, Japan
| | - Yongjia Zheng
- Department of Mechanical Engineering, The University of Tokyo, Tokyo 113-8656, Japan
| | - Mina Maruyama
- Graduate School of Pure and Applied Sciences, University of Tsukuba, Tsukuba 305-8571, Japan
| | - Seungju Seo
- Department of Mechanical Engineering, The University of Tokyo, Tokyo 113-8656, Japan
| | | | - Taiki Inoue
- Department of Mechanical Engineering, The University of Tokyo, Tokyo 113-8656, Japan
- Department of Applied Physics, Graduate School of Engineering, Osaka University, Osaka 565-0871, Japan
| | - Esko I Kauppinen
- Department of Applied Physics, Aalto University School of Science, Espoo 15100, Aalto FI-00076, Finland
| | - Susumu Okada
- Graduate School of Pure and Applied Sciences, University of Tsukuba, Tsukuba 305-8571, Japan
| | - Shohei Chiashi
- Department of Mechanical Engineering, The University of Tokyo, Tokyo 113-8656, Japan
| | - Rong Xiang
- Department of Mechanical Engineering, The University of Tokyo, Tokyo 113-8656, Japan
| | - Shigeo Maruyama
- Department of Mechanical Engineering, The University of Tokyo, Tokyo 113-8656, Japan
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Abstract
The synthesis of one-dimensional van der Waals heterostructures was realized recently, which offers alternative possibilities for prospective applications in electronics and optoelectronics. The even reduced dimension will enable different properties and further miniaturization beyond the capabilities of their two-dimensional counterparts. The natural doping results in p-type electrical characteristics for semiconducting single-walled carbon nanotubes and n-type for molybdenum disulfide with conventional noble metal contacts. Therefore, we demonstrate here a one-dimensional heterostructure nanotube, 11 nm wide, with the coaxial assembly of a semiconducting single-walled carbon nanotube, insulating boron nitride nanotube, and semiconducting molybdenum disulfide nanotube, which induces a radial semiconductor-insulator-semiconductor heterojunction. When opposite potential polarity was applied on a semiconducting single-walled carbon nanotube and molybdenum disulfide nanotube, respectively, the rectifying effect was materialized.
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Affiliation(s)
- Ya Feng
- Department of Mechanical Engineering, School of Engineering, The University of Tokyo, Tokyo 113-8656, Japan
| | - Henan Li
- Department of Mechanical Engineering, School of Engineering, The University of Tokyo, Tokyo 113-8656, Japan
| | - Taiki Inoue
- Department of Mechanical Engineering, School of Engineering, The University of Tokyo, Tokyo 113-8656, Japan
- Department of Applied Physics, Graduate School of Engineering, Osaka University, Osaka 565-0871, Japan
| | - Shohei Chiashi
- Department of Mechanical Engineering, School of Engineering, The University of Tokyo, Tokyo 113-8656, Japan
| | - Slava V Rotkin
- Department of Engineering Science and Mechanics, Materials Research Institute, The Pennsylvania State University, Millennium Science Complex, University Park, Pennsylvania 16802, United States
| | - Rong Xiang
- Department of Mechanical Engineering, School of Engineering, The University of Tokyo, Tokyo 113-8656, Japan
| | - Shigeo Maruyama
- Department of Mechanical Engineering, School of Engineering, The University of Tokyo, Tokyo 113-8656, Japan
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