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Proceedings Paper

Hole transport in polymeric field effect transistors and light-emitting diodes
Author(s): Cristina Tanase; Paul W. M. Blom; Eduard J. Meijer; Dago M. de Leeuw
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Paper Abstract

The hole transport in the amorphous poly(2-methoxy-5-(3’,7’-dimethyloctyloxy)-p-phenylene vinylene) (OC1C10-PPV) and in the more ordered poly[2,5-bis(3’,7’-dimethyloctyloxy)-p-phenylene vinylene] (OC10C10-PPV) has been investigated both in field-effect transistors (FETs) and light-emitting diodes (LEDs) as function of temperature and applied voltage. From J-V measurements on LEDs a difference of 15x has been found in the hole mobility between OC1C10-PPV and OC10C10-PPV. In FETs the dependence of the field-effect mobility on the carrier density is much stronger in OC1C10-PPV than in OC10C10-PPV. These differences in the mobility in both FETs and LEDs are determined by the difference in microscopic transport parameters between the two materials, which results from a different ordering in the polymeric film of the PPV derivatives. Due to their specific chemical composition OC1C10-PPV is an amorphous polymer and the transport is the same in all directions, while OC10C10-PPV is more ordered and the transport shows anisotropy between sandwich and in-plane devices.

Paper Details

Date Published: 17 November 2003
PDF: 7 pages
Proc. SPIE 5217, Organic Field Effect Transistors II, (17 November 2003); doi: 10.1117/12.507996
Show Author Affiliations
Cristina Tanase, Univ. Groningen (Netherlands)
Paul W. M. Blom, Univ. Groningen (Netherlands)
Eduard J. Meijer, Philips Research Labs. (Netherlands)
Dago M. de Leeuw, Philips Research Labs. (Netherlands)

Published in SPIE Proceedings Vol. 5217:
Organic Field Effect Transistors II
Christos D. Dimitrakopoulos, Editor(s)

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