Trap Modulated Charge Carrier Transport in Polyethylene/Graphene Nanocomposites

Abstract The role of trap characteristics in modulating charge transport properties is attracting much attentions in electrical and electronic engineering, which has an important effect on the electrical properties of dielectrics. This paper focuses on the electrical properties of Low-density Polyet...

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Autores principales:	Zhonglei Li, Boxue Du, Chenlei Han, Hang Xu
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/ac1af3ebf6664af19dcae11241dc02f0
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spelling	oai:doaj.org-article:ac1af3ebf6664af19dcae11241dc02f02021-12-02T12:32:02ZTrap Modulated Charge Carrier Transport in Polyethylene/Graphene Nanocomposites10.1038/s41598-017-04196-52045-2322https://doaj.org/article/ac1af3ebf6664af19dcae11241dc02f02017-06-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-04196-5https://doaj.org/toc/2045-2322Abstract The role of trap characteristics in modulating charge transport properties is attracting much attentions in electrical and electronic engineering, which has an important effect on the electrical properties of dielectrics. This paper focuses on the electrical properties of Low-density Polyethylene (LDPE)/graphene nanocomposites (NCs), as well as the corresponding trap level characteristics. The dc conductivity, breakdown strength and space charge behaviors of NCs with the filler content of 0 wt%, 0.005 wt%, 0.01 wt%, 0.1 wt% and 0.5 wt% are studied, and their trap level distributions are characterized by isothermal discharge current (IDC) tests. The experimental results show that the 0.005 wt% LDPE/graphene NCs have a lower dc conductivity, a higher breakdown strength and a much smaller amount of space charge accumulation than the neat LDPE. It is indicated that the graphene addition with a filler content of 0.005 wt% introduces large quantities of deep carrier traps that reduce charge carrier mobility and result in the homocharge accumulation near the electrodes. The deep trap modulated charge carrier transport attributes to reduce the dc conductivity, suppress the injection of space charges into polymer bulks and enhance the breakdown strength, which is of great significance in improving electrical properties of polymer dielectrics.Zhonglei LiBoxue DuChenlei HanHang XuNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-8 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Zhonglei Li Boxue Du Chenlei Han Hang Xu Trap Modulated Charge Carrier Transport in Polyethylene/Graphene Nanocomposites
description	Abstract The role of trap characteristics in modulating charge transport properties is attracting much attentions in electrical and electronic engineering, which has an important effect on the electrical properties of dielectrics. This paper focuses on the electrical properties of Low-density Polyethylene (LDPE)/graphene nanocomposites (NCs), as well as the corresponding trap level characteristics. The dc conductivity, breakdown strength and space charge behaviors of NCs with the filler content of 0 wt%, 0.005 wt%, 0.01 wt%, 0.1 wt% and 0.5 wt% are studied, and their trap level distributions are characterized by isothermal discharge current (IDC) tests. The experimental results show that the 0.005 wt% LDPE/graphene NCs have a lower dc conductivity, a higher breakdown strength and a much smaller amount of space charge accumulation than the neat LDPE. It is indicated that the graphene addition with a filler content of 0.005 wt% introduces large quantities of deep carrier traps that reduce charge carrier mobility and result in the homocharge accumulation near the electrodes. The deep trap modulated charge carrier transport attributes to reduce the dc conductivity, suppress the injection of space charges into polymer bulks and enhance the breakdown strength, which is of great significance in improving electrical properties of polymer dielectrics.
format	article
author	Zhonglei Li Boxue Du Chenlei Han Hang Xu
author_facet	Zhonglei Li Boxue Du Chenlei Han Hang Xu
author_sort	Zhonglei Li
title	Trap Modulated Charge Carrier Transport in Polyethylene/Graphene Nanocomposites
title_short	Trap Modulated Charge Carrier Transport in Polyethylene/Graphene Nanocomposites
title_full	Trap Modulated Charge Carrier Transport in Polyethylene/Graphene Nanocomposites
title_fullStr	Trap Modulated Charge Carrier Transport in Polyethylene/Graphene Nanocomposites
title_full_unstemmed	Trap Modulated Charge Carrier Transport in Polyethylene/Graphene Nanocomposites
title_sort	trap modulated charge carrier transport in polyethylene/graphene nanocomposites
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/ac1af3ebf6664af19dcae11241dc02f0
work_keys_str_mv	AT zhongleili trapmodulatedchargecarriertransportinpolyethylenegraphenenanocomposites AT boxuedu trapmodulatedchargecarriertransportinpolyethylenegraphenenanocomposites AT chenleihan trapmodulatedchargecarriertransportinpolyethylenegraphenenanocomposites AT hangxu trapmodulatedchargecarriertransportinpolyethylenegraphenenanocomposites
_version_	1718394234340376576

Trap Modulated Charge Carrier Transport in Polyethylene/Graphene Nanocomposites

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