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TiO(2) Nanotube Arrays: Fabricated by Soft–Hard Template and the Grain Size Dependence of Field Emission Performance

Highly ordered TiO(2) nanotube (TNT) arrays were successfully synthesized by the combination of soft and hard templates. In the fabrication of them, anodic aluminum oxide membranes act as the hard template while the self-assembly of polystyrene-block-poly(ethylene oxide) (PS-b-PEO) complexed with ti...

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Autores principales: Yang, Xuxin, Ma, Pei, Qi, Hui, Zhao, Jingxin, Wu, Qiang, You, Jichun, Li, Yongjin
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Springer US 2017
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5684055/
https://www.ncbi.nlm.nih.gov/pubmed/29134371
http://dx.doi.org/10.1186/s11671-017-2361-9
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author Yang, Xuxin
Ma, Pei
Qi, Hui
Zhao, Jingxin
Wu, Qiang
You, Jichun
Li, Yongjin
author_facet Yang, Xuxin
Ma, Pei
Qi, Hui
Zhao, Jingxin
Wu, Qiang
You, Jichun
Li, Yongjin
author_sort Yang, Xuxin
collection PubMed
description Highly ordered TiO(2) nanotube (TNT) arrays were successfully synthesized by the combination of soft and hard templates. In the fabrication of them, anodic aluminum oxide membranes act as the hard template while the self-assembly of polystyrene-block-poly(ethylene oxide) (PS-b-PEO) complexed with titanium-tetraisopropoxide (TTIP, the precursor of TiO(2)) provides the soft template to control the grain size of TiO(2) nanotubes. Our results indicate that the field emission (FE) performance depends crucially on the grain size of the calcinated TiO(2) which is dominated by the PS-b-PEO and its blending ratio with TTIP. The optimized sample (with the TTIP/PEO ratio of 3.87) exhibits excellent FE performances involving both a low turn-on field of 3.3 V/um and a high current density of 7.6 mA/cm(2) at 12.7 V/μm. The enhanced FE properties can be attributed to the low effective work function (1.2 eV) resulted from the smaller grain size of TiO(2).
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spelling pubmed-56840552017-11-27 TiO(2) Nanotube Arrays: Fabricated by Soft–Hard Template and the Grain Size Dependence of Field Emission Performance Yang, Xuxin Ma, Pei Qi, Hui Zhao, Jingxin Wu, Qiang You, Jichun Li, Yongjin Nanoscale Res Lett Nano Express Highly ordered TiO(2) nanotube (TNT) arrays were successfully synthesized by the combination of soft and hard templates. In the fabrication of them, anodic aluminum oxide membranes act as the hard template while the self-assembly of polystyrene-block-poly(ethylene oxide) (PS-b-PEO) complexed with titanium-tetraisopropoxide (TTIP, the precursor of TiO(2)) provides the soft template to control the grain size of TiO(2) nanotubes. Our results indicate that the field emission (FE) performance depends crucially on the grain size of the calcinated TiO(2) which is dominated by the PS-b-PEO and its blending ratio with TTIP. The optimized sample (with the TTIP/PEO ratio of 3.87) exhibits excellent FE performances involving both a low turn-on field of 3.3 V/um and a high current density of 7.6 mA/cm(2) at 12.7 V/μm. The enhanced FE properties can be attributed to the low effective work function (1.2 eV) resulted from the smaller grain size of TiO(2). Springer US 2017-11-13 /pmc/articles/PMC5684055/ /pubmed/29134371 http://dx.doi.org/10.1186/s11671-017-2361-9 Text en © The Author(s). 2017 Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
spellingShingle Nano Express
Yang, Xuxin
Ma, Pei
Qi, Hui
Zhao, Jingxin
Wu, Qiang
You, Jichun
Li, Yongjin
TiO(2) Nanotube Arrays: Fabricated by Soft–Hard Template and the Grain Size Dependence of Field Emission Performance
title TiO(2) Nanotube Arrays: Fabricated by Soft–Hard Template and the Grain Size Dependence of Field Emission Performance
title_full TiO(2) Nanotube Arrays: Fabricated by Soft–Hard Template and the Grain Size Dependence of Field Emission Performance
title_fullStr TiO(2) Nanotube Arrays: Fabricated by Soft–Hard Template and the Grain Size Dependence of Field Emission Performance
title_full_unstemmed TiO(2) Nanotube Arrays: Fabricated by Soft–Hard Template and the Grain Size Dependence of Field Emission Performance
title_short TiO(2) Nanotube Arrays: Fabricated by Soft–Hard Template and the Grain Size Dependence of Field Emission Performance
title_sort tio(2) nanotube arrays: fabricated by soft–hard template and the grain size dependence of field emission performance
topic Nano Express
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5684055/
https://www.ncbi.nlm.nih.gov/pubmed/29134371
http://dx.doi.org/10.1186/s11671-017-2361-9
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