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


Kanbur Y., Irimia-Vladu M., Glowacki E. D. , Voss G., Baumgartner M., Schwabegger G., ...Daha Fazla

ORGANIC ELECTRONICS, cilt.13, ss.919-924, 2012 (SCI İndekslerine Giren Dergi) identifier identifier identifier

  • Cilt numarası: 13 Konu: 5
  • Basım Tarihi: 2012
  • Doi Numarası: 10.1016/j.orgel.2012.02.006
  • Dergi Adı: ORGANIC ELECTRONICS
  • Sayfa Sayıları: ss.919-924

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 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. (C) 2012 Elsevier B.V. All rights reserved.