Air-stable, low-voltage organic transistors: High-mobility thienoacene derivatives for unipolar and complementary ring oscillators on flexible substrates

U. Kraft, M. Sejfie, T. Zaki, F. Letzkus, J. N. Burghartz, K. Takimiya, E. Weber, H. Klauk

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

The organic semiconductor DNTT (dinaphtho-[2,3-b:2',3'-f]thieno[3,2-b] thiophene) and its didecyl- and diphenyl derivatives C10-DNTT and DPh-DNTT [1-3] have recently shown exceptionally large field-effect mobilities together with excellent air stability [4]. Here we present a detailed analysis of the mobility, contact resistance, air stability and signal delay (measured in unipolar as well as complementary ring oscillators) of low-voltage (∼3 V) thin-film transistors (TFTs) based on these semiconductors with channel lengths down to 0.5 μm on flexible plastic substrates. The TFTs were fabricated with an inverted staggered device structure and with Al gate electrodes, a gate dielectric composed of a plasma-grown AlOx layer (3.6 nm thick) and a tetradecylphosphonic acid self-assembled monolayer (SAM), a vacuum-deposited organic semiconductor layer (25 nm), and Au source and drain contacts [4]. The fabrication of organic TFTs with channel lengths as short as 0.5 μm was accomplished using high-resolution silicon stencil masks [6,7]. All measurements were performed in ambient air.

Original languageEnglish
Title of host publication72nd Device Research Conference, DRC 2014 - Conference Digest
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages283-284
Number of pages2
ISBN (Print)9781479954056
DOIs
Publication statusPublished - 2014 Jan 1
Externally publishedYes
Event72nd Device Research Conference, DRC 2014 - Santa Barbara, CA, United States
Duration: 2014 Jun 222014 Jun 25

Publication series

NameDevice Research Conference - Conference Digest, DRC
ISSN (Print)1548-3770

Other

Other72nd Device Research Conference, DRC 2014
CountryUnited States
CitySanta Barbara, CA
Period14/6/2214/6/25

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

Fingerprint Dive into the research topics of 'Air-stable, low-voltage organic transistors: High-mobility thienoacene derivatives for unipolar and complementary ring oscillators on flexible substrates'. Together they form a unique fingerprint.

  • Cite this

    Kraft, U., Sejfie, M., Zaki, T., Letzkus, F., Burghartz, J. N., Takimiya, K., Weber, E., & Klauk, H. (2014). Air-stable, low-voltage organic transistors: High-mobility thienoacene derivatives for unipolar and complementary ring oscillators on flexible substrates. In 72nd Device Research Conference, DRC 2014 - Conference Digest (pp. 283-284). [6872407] (Device Research Conference - Conference Digest, DRC). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/DRC.2014.6872407