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 journalArticlepeer-review

9 Citations (Scopus)


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
Issue number6
Publication statusPublished - 2009 Nov

Bibliographical note

Funding Information:
This work was supported by the Korea Ministry of Education, Science and Technology (NRL Program R0A-2008-000-20066-0, User Program of Proton Engineering Frontier Project, KRF-2006-005-J03601). This work was also supported by the Seoul Research and Business Development Program (Grant No. 10583). The measurements at the Korean Basic Science Institute (KBSI) are acknowledged.


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

ASJC Scopus subject areas

  • General Materials Science
  • General Physics and Astronomy


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