Synthesis of High-Density Indium Oxide Nanowires with Low Electrical Resistivity

In this study, indium oxide nanowires of high-density were synthesized by chemical vapor deposition (CVD) through a vapor–liquid–solid (VLS) mechanism without carrier gas. The indium oxide nanowires possess great morphology with an aspect ratio of over 400 and an average diameter of 50 nm; the lengt...

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Main Authors: Yu-Yang Chen, Shu-Meng Yang, Kuo-Chang Lu
Format: Article
Language:English
Published: MDPI AG 2020-10-01
Series:Nanomaterials
Subjects:
Online Access:https://www.mdpi.com/2079-4991/10/11/2100
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author Yu-Yang Chen
Shu-Meng Yang
Kuo-Chang Lu
author_facet Yu-Yang Chen
Shu-Meng Yang
Kuo-Chang Lu
author_sort Yu-Yang Chen
collection DOAJ
description In this study, indium oxide nanowires of high-density were synthesized by chemical vapor deposition (CVD) through a vapor–liquid–solid (VLS) mechanism without carrier gas. The indium oxide nanowires possess great morphology with an aspect ratio of over 400 and an average diameter of 50 nm; the length of the nanowires could be over 30 μm, confirmed by field-emission scanning electron microscopy (SEM). Characterization was conducted with X-ray diffraction (XRD), transmission electron microscopy (TEM), photoluminescence spectrum (PL). High-resolution TEM studies confirm that the grown nanowires were single crystalline c-In<sub>2</sub>O<sub>3</sub> nanowires of body-centered cubic structures. The room temperature PL spectrum shows a strong peak around 2.22 eV, originating from the defects in the crystal structure. The electrical resistivity of a single indium oxide nanowire was measured to be 1.0 × 10<sup>−4</sup> Ω⋅cm, relatively low as compared with previous works, which may result from the abundant oxygen vacancies in the nanowires, acting as unintentional doping.
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spelling doaj.art-0d5941081a0e4b03aafbbbb0c0521d032023-11-20T18:14:11ZengMDPI AGNanomaterials2079-49912020-10-011011210010.3390/nano10112100Synthesis of High-Density Indium Oxide Nanowires with Low Electrical ResistivityYu-Yang Chen0Shu-Meng Yang1Kuo-Chang Lu2Department of Materials Science and Engineering, National Cheng Kung University, Tainan 701, TaiwanDepartment of Materials Science and Engineering, National Cheng Kung University, Tainan 701, TaiwanDepartment of Materials Science and Engineering, National Cheng Kung University, Tainan 701, TaiwanIn this study, indium oxide nanowires of high-density were synthesized by chemical vapor deposition (CVD) through a vapor–liquid–solid (VLS) mechanism without carrier gas. The indium oxide nanowires possess great morphology with an aspect ratio of over 400 and an average diameter of 50 nm; the length of the nanowires could be over 30 μm, confirmed by field-emission scanning electron microscopy (SEM). Characterization was conducted with X-ray diffraction (XRD), transmission electron microscopy (TEM), photoluminescence spectrum (PL). High-resolution TEM studies confirm that the grown nanowires were single crystalline c-In<sub>2</sub>O<sub>3</sub> nanowires of body-centered cubic structures. The room temperature PL spectrum shows a strong peak around 2.22 eV, originating from the defects in the crystal structure. The electrical resistivity of a single indium oxide nanowire was measured to be 1.0 × 10<sup>−4</sup> Ω⋅cm, relatively low as compared with previous works, which may result from the abundant oxygen vacancies in the nanowires, acting as unintentional doping.https://www.mdpi.com/2079-4991/10/11/2100indium oxidenanowirechemical vapor depositioncarbothermalresistivity
spellingShingle Yu-Yang Chen
Shu-Meng Yang
Kuo-Chang Lu
Synthesis of High-Density Indium Oxide Nanowires with Low Electrical Resistivity
Nanomaterials
indium oxide
nanowire
chemical vapor deposition
carbothermal
resistivity
title Synthesis of High-Density Indium Oxide Nanowires with Low Electrical Resistivity
title_full Synthesis of High-Density Indium Oxide Nanowires with Low Electrical Resistivity
title_fullStr Synthesis of High-Density Indium Oxide Nanowires with Low Electrical Resistivity
title_full_unstemmed Synthesis of High-Density Indium Oxide Nanowires with Low Electrical Resistivity
title_short Synthesis of High-Density Indium Oxide Nanowires with Low Electrical Resistivity
title_sort synthesis of high density indium oxide nanowires with low electrical resistivity
topic indium oxide
nanowire
chemical vapor deposition
carbothermal
resistivity
url https://www.mdpi.com/2079-4991/10/11/2100
work_keys_str_mv AT yuyangchen synthesisofhighdensityindiumoxidenanowireswithlowelectricalresistivity
AT shumengyang synthesisofhighdensityindiumoxidenanowireswithlowelectricalresistivity
AT kuochanglu synthesisofhighdensityindiumoxidenanowireswithlowelectricalresistivity