Projects per year
Abstract
The diameter, bundle length, and bundle diameter of single-walled carbon nanotubes (SWCNTs) are key factors to their thin-film conductivity. Whereas these parameters interact and evolve simultaneously during SWCNT growth. Thus it is challenging to study the effect of one parameter solely on thin-film conductivity. Herein, we synthesized SWCNT samples with controllable shapes by simply modulating the flow rate of gases using floating catalyst chemical vapor deposition (FCCVD), where the carbon monoxide is served as the carbon source (CO) and ferrocene as catalyst precursor. By varying CO flow rates through ferrocene and the quartz tube, we obtained SWCNT samples with the constant mean tube diameter, while the bundle diameter or bundle length differs from each other. As a result, the SWCNT thin films exhibit tunable sheet resistance, in which the film with the bundle length of 16 μm and bundle diameter of 4.8 nm presents the lowest sheet resistance (84 Ω/□ at 90% transmittance by AuCl3 doping). Differing from the conventional methods, such as modulating temperature or catalyst size, our facile approach of regulating gas flow rates offers a new option for the controlled synthesis of SWCNTs.
Original language | English |
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Article number | 108716 |
Journal | Diamond and Related Materials |
Volume | 120 |
Early online date | 2021 |
DOIs | |
Publication status | Published - Dec 2021 |
MoE publication type | A1 Journal article-refereed |
Keywords
- Aerosol synthesis
- Flow rates
- Flow reactor
- Single-walled carbon nanotubes
- Transparent conducting films
Fingerprint
Dive into the research topics of 'Aerosol synthesis of single-walled carbon nanotubes by tuning feeding flow configuration for transparent conducting films'. Together they form a unique fingerprint.Projects
- 3 Finished
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CNTstress: Using Carbon Nanotube Materials to Improve the Stress Grading System of an Electrical Machine
Kauppinen, E. (Principal investigator)
01/09/2018 → 31/08/2022
Project: Academy of Finland: Other research funding
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FEDOC: Fast electrochemical detection of opioids in blood sample by carbon nano hybrid electrodes
Koskinen, J. (Principal investigator)
01/06/2016 → 31/12/2018
Project: Business Finland: Other research funding
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CNT-PV: Carbon nanotube hole-transporting and collecting layers for semi-transparent, flexible and low-cost solid-state photovoltaic cells
Kauppinen, E. (Principal investigator)
01/01/2016 → 31/12/2017
Project: Business Finland: Other research funding
Equipment
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OtaNano - Nanomicroscopy Center
Seitsonen, J. (Manager) & Rissanen, A. (Other)
OtaNanoFacility/equipment: Facility