Electric field enhancements in In2O3-coated single-walled carbon nanotubes |
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| Affiliation: | 1. Osaka University, 1-1 Machikaneyama, Toyonaka, Japan;2. Institute of Particle and Nuclear Studies, High Energy Accelerator Research Org. (KEK), 1-1 Oho, Tsukuba, Japan;1. Taras Shevchenko National University, 64/13 Volodymyrska St., Kyiv 01601, Ukraine;2. Dept. of Physics and Astronomy, Texas Christian University, Fort Worth, TX 76129, USA;1. Department of Electrical and Electronic Engineering, Universiti Teknologi PETRONAS, 32610 Seri Iskandar, Perak, Malaysia;2. Department of Fundamental and Applied Sciences, Universiti Teknologi PETRONAS, 32610 Seri Iskandar, Perak, Malaysia;3. Center of Innovative Nanostructures and Nanodevices (COINN), Universiti Teknologi PETRONAS, 32610 Seri Iskandar, Perak, Malaysia;4. Low Dimensional Materials Research Centre, Department of Physics, University of Malaya, Kuala Lumpur, 50603, Malaysia;1. Center of Research Excellence in Nanotechnology, King Fahd University of Petroleum and Minerals, Dhahran, Saudi Arabia;2. Department of Chemistry, King Fahd University of Petroleum and Minerals, Dhahran, Saudi Arabia;3. Department of Physics, King Fahd University of Petroleum and Minerals, Dhahran, Saudi Arabia |
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| Abstract: | In2O3 nanoparticles are coated on the surfaces of single-walled carbon nanotubes (SWCNTs) by a successive ionic layer adsorption and reaction process. The thickness of the In2O3 nanoparticle film is tuned by controlling the number of coating cycles. The electric field around the In2O3-coated SWCNTs is compared with that of pristine SWCNTs. Field enhancement of the In2O3-coated SWCNTs is confirmed by conductive atomic force microscopy at low electric field (contact mode: 1 V to ?1 V) and also field emission (FE) analysis at high electric field (0–4.2 V/μm). The uniformity and emission stability are also measured via FE analysis. Near infrared and X-ray photoemission spectroscopy data are suggested to explain the charge transfer, bandgap change between the In2O3 nanoparticles and SWCNTs, and the electric field enhancements in the In2O3-coated SWCNTs at both low and high electric field. |
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