Charge Dynamics Study of the Percolation Threshold in a Polymer-Fullerene Composite System

Kyu Hyun Mo, Dong Min Choi, Cheol Eui Lee

Research output: Contribution to journalArticle

Abstract

A fullerene percolation threshold has been identified in the current density-voltage (J-V) characteristics of a 5-(2’-ethyl-hexyloxy)-p-phenylene-vinylene (MEH-PPV) conjugated polymer and fullerene (C 60 ) composite system. Charge dynamics associated with the percolation threshold was studied in this work by means of time-of-flight (TOF) measurements of the charge carrier mobilities. The hole mobility showed little change up to a fullerene concentration of 1 wt.%. On the other hand, the electron mobility increased with increasing fullerene concentration and exhibited a critical behavior with a maximum at a percolation threshold of 0.8 wt.%, at which a minimum in the energetic disorder took place.

Original languageEnglish
Pages (from-to)527-529
Number of pages3
JournalJournal of the Korean Physical Society
Volume74
Issue number5
DOIs
Publication statusPublished - 2019 Mar 1

Fingerprint

fullerenes
composite materials
thresholds
polymers
hole mobility
carrier mobility
electron mobility
charge carriers
disorders
current density
electric potential

Keywords

  • Charge dynamics
  • Fullerene-doped MEH-PPV conjugated polymers
  • Percolation threshold

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Charge Dynamics Study of the Percolation Threshold in a Polymer-Fullerene Composite System. / Mo, Kyu Hyun; Choi, Dong Min; Lee, Cheol Eui.

In: Journal of the Korean Physical Society, Vol. 74, No. 5, 01.03.2019, p. 527-529.

Research output: Contribution to journalArticle

@article{bb613fc70e1e4bbebb7b0c614a3831f0,
title = "Charge Dynamics Study of the Percolation Threshold in a Polymer-Fullerene Composite System",
abstract = "A fullerene percolation threshold has been identified in the current density-voltage (J-V) characteristics of a 5-(2’-ethyl-hexyloxy)-p-phenylene-vinylene (MEH-PPV) conjugated polymer and fullerene (C 60 ) composite system. Charge dynamics associated with the percolation threshold was studied in this work by means of time-of-flight (TOF) measurements of the charge carrier mobilities. The hole mobility showed little change up to a fullerene concentration of 1 wt.{\%}. On the other hand, the electron mobility increased with increasing fullerene concentration and exhibited a critical behavior with a maximum at a percolation threshold of 0.8 wt.{\%}, at which a minimum in the energetic disorder took place.",
keywords = "Charge dynamics, Fullerene-doped MEH-PPV conjugated polymers, Percolation threshold",
author = "Mo, {Kyu Hyun} and Choi, {Dong Min} and Lee, {Cheol Eui}",
year = "2019",
month = "3",
day = "1",
doi = "10.3938/jkps.74.527",
language = "English",
volume = "74",
pages = "527--529",
journal = "Journal of the Korean Physical Society",
issn = "0374-4884",
publisher = "Korean Physical Society",
number = "5",

}

TY - JOUR

T1 - Charge Dynamics Study of the Percolation Threshold in a Polymer-Fullerene Composite System

AU - Mo, Kyu Hyun

AU - Choi, Dong Min

AU - Lee, Cheol Eui

PY - 2019/3/1

Y1 - 2019/3/1

N2 - A fullerene percolation threshold has been identified in the current density-voltage (J-V) characteristics of a 5-(2’-ethyl-hexyloxy)-p-phenylene-vinylene (MEH-PPV) conjugated polymer and fullerene (C 60 ) composite system. Charge dynamics associated with the percolation threshold was studied in this work by means of time-of-flight (TOF) measurements of the charge carrier mobilities. The hole mobility showed little change up to a fullerene concentration of 1 wt.%. On the other hand, the electron mobility increased with increasing fullerene concentration and exhibited a critical behavior with a maximum at a percolation threshold of 0.8 wt.%, at which a minimum in the energetic disorder took place.

AB - A fullerene percolation threshold has been identified in the current density-voltage (J-V) characteristics of a 5-(2’-ethyl-hexyloxy)-p-phenylene-vinylene (MEH-PPV) conjugated polymer and fullerene (C 60 ) composite system. Charge dynamics associated with the percolation threshold was studied in this work by means of time-of-flight (TOF) measurements of the charge carrier mobilities. The hole mobility showed little change up to a fullerene concentration of 1 wt.%. On the other hand, the electron mobility increased with increasing fullerene concentration and exhibited a critical behavior with a maximum at a percolation threshold of 0.8 wt.%, at which a minimum in the energetic disorder took place.

KW - Charge dynamics

KW - Fullerene-doped MEH-PPV conjugated polymers

KW - Percolation threshold

UR - http://www.scopus.com/inward/record.url?scp=85062727940&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85062727940&partnerID=8YFLogxK

U2 - 10.3938/jkps.74.527

DO - 10.3938/jkps.74.527

M3 - Article

VL - 74

SP - 527

EP - 529

JO - Journal of the Korean Physical Society

JF - Journal of the Korean Physical Society

SN - 0374-4884

IS - 5

ER -