Charge transport in low-concentration MEH-PPV conjugated polymer/fullerene composites

K. W. Lee, K. H. Mo, J. W. Jang, N. K. Kim, W. Lee, I. M. Kim, Cheol Eui Lee

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

Charge transport was studied in composites of poly[2-methoxy-5-(2′-ethyl-hexyloxy)-p-phenylene-vinylene] (MEH-PPV) conjugate polymer and low-concentration fullerenes (C60) below the percolation threshold. The electron mobility showed a linear increase with the fullerene concentration, to which the hole mobility was insensitive. Our results indicate that fullerene-polymer networks provide a conduction path to the electrons, whereas the holes are transported through the polymer-only paths. The microscopic environments of the two distinct conduction paths in the composites as revealed by the electric field dependence of the mobilities are also discussed.

Original languageEnglish
Pages (from-to)1315-1317
Number of pages3
JournalCurrent Applied Physics
Volume9
Issue number6
DOIs
Publication statusPublished - 2009 Nov

Keywords

  • Charge transport
  • Low-concentration MEH-PPV/fullerene composites

ASJC Scopus subject areas

  • Materials Science(all)
  • Physics and Astronomy(all)

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