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 language | English |
---|---|
Pages (from-to) | 1315-1317 |
Number of pages | 3 |
Journal | Current Applied Physics |
Volume | 9 |
Issue number | 6 |
DOIs | |
State | Published - Nov 2009 |
Keywords
- Charge transport
- Low-concentration MEH-PPV/fullerene composites