Vacuum-processed polyethylene as a dielectric for low operating voltage organic field effect transistors
Makaleler > Tam Makale · 2012
Yazarlar: Yasin Kanbur, Mihai Irimia-Vladu, Eric D. Glowacki, Gundula Voss, Melanie Baumgartner, Guenther Schwabegger, Lucia Leonat, Mujeeb Ullah, Hizir Sarica, Şule ERTEN ELA, Reinhard Schwoediauer, Helmut Sitter, Zuhal Kucukyavuz, Siegfried Bauer, Niyazi Serdar Sariciftci
Organic Electronics, SCI Expanded İndekslerine Giren Dergi, Uluslararası, Wos, 2012, cilt 13, ss 919-924
DOI: 10.1016/j.orgel.2012.02.006
Özet
We report on the fabrication and performance of vacuum-processed organic field effect transistors utilizing evaporated low-density polyethylene (LD-PE) as a dielectric layer. With C60 as the organic semiconductor, we demonstrate low operating voltage transistors with field effect mobilities in excess of 4 cm2/Vs. Devices with pentacene showed a mobility of 0.16 cm2/Vs. Devices using tyrian Purple as semiconductor show low-voltage ambipolar operation with equal electron and hole mobilities of ∼0.3 cm2/Vs. These devices demonstrate low hysteresis and operational stability over at least several months. Grazing-angle infrared spectroscopy of evaporated thin films shows that the structure of the polyethylene is similar to solution-cast films. We report also on the morphological and dielectric properties of these films. Our experiments demonstrate that polyethylene is a stable dielectric supporting both hole and electron channels.