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Maximizing the Field Emission Performance of Graphene Arrays
To design efficient and powerful field emission cathodes, the screening effect is of great importance and should be traded off between screening and emitter number. It has long been found that to achieve maximum emission efficiency in an array, neighboring emitters are at two or three times their he...
Autores principales: | , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2020
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7599458/ https://www.ncbi.nlm.nih.gov/pubmed/33050566 http://dx.doi.org/10.3390/nano10102003 |
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author | Yang, Kaiqiang Liu, Jianlong Jiang, Ruirui Gong, Yubing Zeng, Baoqing Yang, Jianjun Chi, Feng Liu, Liming |
author_facet | Yang, Kaiqiang Liu, Jianlong Jiang, Ruirui Gong, Yubing Zeng, Baoqing Yang, Jianjun Chi, Feng Liu, Liming |
author_sort | Yang, Kaiqiang |
collection | PubMed |
description | To design efficient and powerful field emission cathodes, the screening effect is of great importance and should be traded off between screening and emitter number. It has long been found that to achieve maximum emission efficiency in an array, neighboring emitters are at two or three times their height from each other. However, this is only true for one-dimensional emitters, such as carbon nanotubes, but for graphene, a two-dimensional material, it is different. In this work, we found that to achieve maximum emission efficiency in an array of graphene, the separation of the emitter is four times the height, and it is insensitive to the anode voltage and the distance between the cathode and the anode. |
format | Online Article Text |
id | pubmed-7599458 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-75994582020-11-01 Maximizing the Field Emission Performance of Graphene Arrays Yang, Kaiqiang Liu, Jianlong Jiang, Ruirui Gong, Yubing Zeng, Baoqing Yang, Jianjun Chi, Feng Liu, Liming Nanomaterials (Basel) Article To design efficient and powerful field emission cathodes, the screening effect is of great importance and should be traded off between screening and emitter number. It has long been found that to achieve maximum emission efficiency in an array, neighboring emitters are at two or three times their height from each other. However, this is only true for one-dimensional emitters, such as carbon nanotubes, but for graphene, a two-dimensional material, it is different. In this work, we found that to achieve maximum emission efficiency in an array of graphene, the separation of the emitter is four times the height, and it is insensitive to the anode voltage and the distance between the cathode and the anode. MDPI 2020-10-11 /pmc/articles/PMC7599458/ /pubmed/33050566 http://dx.doi.org/10.3390/nano10102003 Text en © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Yang, Kaiqiang Liu, Jianlong Jiang, Ruirui Gong, Yubing Zeng, Baoqing Yang, Jianjun Chi, Feng Liu, Liming Maximizing the Field Emission Performance of Graphene Arrays |
title | Maximizing the Field Emission Performance of Graphene Arrays |
title_full | Maximizing the Field Emission Performance of Graphene Arrays |
title_fullStr | Maximizing the Field Emission Performance of Graphene Arrays |
title_full_unstemmed | Maximizing the Field Emission Performance of Graphene Arrays |
title_short | Maximizing the Field Emission Performance of Graphene Arrays |
title_sort | maximizing the field emission performance of graphene arrays |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7599458/ https://www.ncbi.nlm.nih.gov/pubmed/33050566 http://dx.doi.org/10.3390/nano10102003 |
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