@inproceedings{eb332b5bf5cb426f9fcae0f889a1be21,
title = "Distinguishing between nonlinear channel transport and contact effects in organic FETs",
abstract = "We investigate charge injection and transport in organic field-effect transistors fabricated by using poly(2,5-bis(3-tetradecylthiophene-2-yl) thieno[3,2-b]thiophene) (pBTTT-C14) or poly(3-hexylthiophene) (P3HT) as the active polymer layer. We show that in high mobility devices where the channel resistances are low compared to the contact resistances, the device performance can be dominated by the metal/organic semiconductor (OSC) contacts. However, in sets of devices where the channel resistance is dominant over the contacts (usually the lower mobility devices), we see pronounced field dependence in the saturation regime mobilities consistent with a Poole-Frenkel model of charge transport within the channel. The field-dependent mobility in short-channel devices produces nonlinear output current-voltage characteristics which can be modeled consistently in the Poole-Frenkel framework.",
keywords = "Channel resistance, Contact resistance, Organic field-effect transistor, Poole-Frenkel effect",
author = "Hamadani, {B. H.} and LeBoeuf, {J. L.} and Kline, {R. J.} and I. McCulloch and M. Heeney and Richter, {C. A.} and Richter, {L. J.} and Gundlach, {D. J.}",
year = "2007",
doi = "10.1117/12.734433",
language = "English (US)",
isbn = "9780819468062",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
booktitle = "Organic Field-Effect Transistors VI",
note = "Organic Field-Effect Transistors VI ; Conference date: 26-08-2007 Through 28-08-2007",
}