Electrically Tunable Perfect Terahertz Absorber Using Embedded Combline Graphene Layer

Graphene is a powerful 2-D matter with the capability of extraordinary transparency, and tunable conductivity is employed in emerging optoelectronics devices. In this article, the design of an electrically tunable graphene-based perfect terahertz absorber is proposed and evaluated numerically. The i...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Amir Maghoul, Ali Rostami, Azeez Abdullah Barzinjy, Peyman Mirtaheri
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	graphene perfect absorber plasmon fermi energy tunable Technology T Engineering (General). Civil engineering (General) TA1-2040 Biology (General) QH301-705.5 Physics QC1-999 Chemistry QD1-999
Acceso en línea:	https://doaj.org/article/798dbb03ed10494cadd1300a60abad5f
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:798dbb03ed10494cadd1300a60abad5f
record_format	dspace
spelling	oai:doaj.org-article:798dbb03ed10494cadd1300a60abad5f2021-11-25T16:41:48ZElectrically Tunable Perfect Terahertz Absorber Using Embedded Combline Graphene Layer10.3390/app1122109612076-3417https://doaj.org/article/798dbb03ed10494cadd1300a60abad5f2021-11-01T00:00:00Zhttps://www.mdpi.com/2076-3417/11/22/10961https://doaj.org/toc/2076-3417Graphene is a powerful 2-D matter with the capability of extraordinary transparency, and tunable conductivity is employed in emerging optoelectronics devices. In this article, the design of an electrically tunable graphene-based perfect terahertz absorber is proposed and evaluated numerically. The introduced structure is composed of two graphene layers with a sharp absorption peak in the terahertz band. These graphene layers are combline and stripline separated by the insulator substrate. The position of the absorption peak is tunable on the absorption band by means of manipulation in geometric parameters of the combline graphene layer. Furthermore, the intensity and frequency of the absorption peak can be flexibly modulated by varying Fermi potential of the combline graphene layer, which can be controlled through external DC voltages without the need of changing the geometry of the structure. It is shown that the absorption band can be tuned in the bandwidth from 5 to 15 in terahertz. The findings of this paper can promote a new perspective in designing perfect ribbon absorbers based on graphene properties that can be utilized for future photodetectors, solar cells, and thermal sensors with an absorption intensity above 2 × 10<sup>5</sup>(nm<sup>2</sup>) with narrow absorption bandwidth of 0.112 THz.Amir MaghoulAli RostamiAzeez Abdullah BarzinjyPeyman MirtaheriMDPI AGarticlegrapheneperfect absorberplasmonfermi energytunableTechnologyTEngineering (General). Civil engineering (General)TA1-2040Biology (General)QH301-705.5PhysicsQC1-999ChemistryQD1-999ENApplied Sciences, Vol 11, Iss 10961, p 10961 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	graphene perfect absorber plasmon fermi energy tunable Technology T Engineering (General). Civil engineering (General) TA1-2040 Biology (General) QH301-705.5 Physics QC1-999 Chemistry QD1-999
spellingShingle	graphene perfect absorber plasmon fermi energy tunable Technology T Engineering (General). Civil engineering (General) TA1-2040 Biology (General) QH301-705.5 Physics QC1-999 Chemistry QD1-999 Amir Maghoul Ali Rostami Azeez Abdullah Barzinjy Peyman Mirtaheri Electrically Tunable Perfect Terahertz Absorber Using Embedded Combline Graphene Layer
description	Graphene is a powerful 2-D matter with the capability of extraordinary transparency, and tunable conductivity is employed in emerging optoelectronics devices. In this article, the design of an electrically tunable graphene-based perfect terahertz absorber is proposed and evaluated numerically. The introduced structure is composed of two graphene layers with a sharp absorption peak in the terahertz band. These graphene layers are combline and stripline separated by the insulator substrate. The position of the absorption peak is tunable on the absorption band by means of manipulation in geometric parameters of the combline graphene layer. Furthermore, the intensity and frequency of the absorption peak can be flexibly modulated by varying Fermi potential of the combline graphene layer, which can be controlled through external DC voltages without the need of changing the geometry of the structure. It is shown that the absorption band can be tuned in the bandwidth from 5 to 15 in terahertz. The findings of this paper can promote a new perspective in designing perfect ribbon absorbers based on graphene properties that can be utilized for future photodetectors, solar cells, and thermal sensors with an absorption intensity above 2 × 10<sup>5</sup>(nm<sup>2</sup>) with narrow absorption bandwidth of 0.112 THz.
format	article
author	Amir Maghoul Ali Rostami Azeez Abdullah Barzinjy Peyman Mirtaheri
author_facet	Amir Maghoul Ali Rostami Azeez Abdullah Barzinjy Peyman Mirtaheri
author_sort	Amir Maghoul
title	Electrically Tunable Perfect Terahertz Absorber Using Embedded Combline Graphene Layer
title_short	Electrically Tunable Perfect Terahertz Absorber Using Embedded Combline Graphene Layer
title_full	Electrically Tunable Perfect Terahertz Absorber Using Embedded Combline Graphene Layer
title_fullStr	Electrically Tunable Perfect Terahertz Absorber Using Embedded Combline Graphene Layer
title_full_unstemmed	Electrically Tunable Perfect Terahertz Absorber Using Embedded Combline Graphene Layer
title_sort	electrically tunable perfect terahertz absorber using embedded combline graphene layer
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/798dbb03ed10494cadd1300a60abad5f
work_keys_str_mv	AT amirmaghoul electricallytunableperfectterahertzabsorberusingembeddedcomblinegraphenelayer AT alirostami electricallytunableperfectterahertzabsorberusingembeddedcomblinegraphenelayer AT azeezabdullahbarzinjy electricallytunableperfectterahertzabsorberusingembeddedcomblinegraphenelayer AT peymanmirtaheri electricallytunableperfectterahertzabsorberusingembeddedcomblinegraphenelayer
_version_	1718413026975023104

Electrically Tunable Perfect Terahertz Absorber Using Embedded Combline Graphene Layer

Ejemplares similares