Vacuum-processed polyethylene as a dielectric for low operating voltage organic field effect transistors

Kanbur, Yasin
Irimia-Vladu, Mihai
Glowacki, Eric D.
Voss, Gundula
Baumgartner, Melanie
Schwabegger, Guenther
Leonat, Lucia
Ullah, Mujeeb
Sarica, Hizir
Schwoediauer, Reinhard
Sitter, Helmut
Kucukyavuz, Zuhal
Bauer, Siegfried
Sariciftci, Niyazi Serdar
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 C-60 as the organic semiconductor, we demonstrate low operating voltage transistors with field effect mobilities in excess of 4 cm(2)/Vs. Devices with pentacene showed a mobility of 0.16 cm(2)/Vs. Devices using tyrian Purple as semiconductor show low-voltage ambipolar operation with equal electron and hole mobilities of similar to 0.3 cm(2)/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.

Citation Formats
Y. Kanbur et al. , “Vacuum-processed polyethylene as a dielectric for low operating voltage organic field effect transistors,” ORGANIC ELECTRONICS, vol. 13, no. 5, pp. 919–924, 2012, Accessed: 00, 2020. [Online]. Available: