Hysteresis mechanism and control in pentacene organic field-effect transistors with polymer dielectric

Wei Huang, Wei Shi, Shijiao Han, Junsheng Yu*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

25 Scopus citations

Abstract

Hysteresis mechanism of pentacene organic field-effect transistors (OFETs) with polyvinyl alcohol (PVA) and/or polymethyl methacrylate (PMMA) dielectrics is studied. Through analyzing the electrical characteristics of OFETs with various PVA/PMMA arrangements, it shows that charge, which is trapped in PVA bulk and at the interface of pentacene/PVA, is one of the origins of hysteresis. The results also show that memory window is proportional to both trap amount in PVA and charge density at the gate/PVA or PVA/pentacene interfaces. Hence, the controllable memory window of around 0 ∼ 10 V can be realized by controlling the thickness and combination of triple-layer polymer dielectrics.

Original languageEnglish (US)
Article number052122
JournalAIP Advances
Volume3
Issue number5
DOIs
StatePublished - May 2013

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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