3 research outputs found
Single Crystal-Like Performance in Solution-Coated Thin-Film Organic Field-Effect Transistors
In electronics, the fi eld-effect transistor (FET) is a crucial cornerstone and
successful integration of this semiconductor device into circuit applications
requires stable and ideal electrical characteristics over a wide range of temperatures
and environments. Solution processing, using printing or coating
techniques, has been explored to manufacture organic fi eld-effect transistors
(OFET) on fl exible carriers, enabling radically novel electronics applications.
Ideal electrical characteristics, in organic materials, are typically only found in
single crystals. Tiresome growth and manipulation of these hamper practical
production of fl exible OFETs circuits. To date, neither devices nor any circuits,
based on solution-processed OFETs, has exhibited an ideal set of characteristics
similar or better than today’s FET technology based on amorphous
silicon. Here, bar-assisted meniscus shearing of dibenzo-tetrathiafulvalene
to coat-process self-organized crystalline organic semiconducting domains
with high reproducibility is reported. Including these coatings as the channel
in OFETs, electric fi eld and temperature-independent charge carrier mobility
and no bias stress effects are observed. Furthermore, record-high gain in
OFET inverters and exceptional operational stability in both air and water are
measured.The authors thank the ERC StG 2012-306826 e-GAMES project, the
Networking Research Center on Bioengineering, Biomaterials, and
Nanomedicine (CIBER-BBN), the DGI (Spain) project BE-WELL
CTQ2013-40480-R, and the Generalitat de Catalunya (2014-SGR-
17). Research in Sweden was fi nancially supported by the Advanced
Functional Materials Center at Linköping University, the Önnesjö
Foundation, the Knut and Alice Wallenberg Foundation (Power Paper
project, scholars), the Swedish Foundation for Strategic Research (SSF,
Synergi project). F.G.D.P. thanks Universidad Técnica de Ambato and
Secretaría de Educación Superior, Ciencia, Tecnología e Innovación for
funding through a doctoral scholarship “Convocatoria abierta 2010.”
The authors also thank Witold Tatkiewicz for his help with the ImageJ
software.Peer reviewe
Single Crystal-Like Performance in Solution-Coated Thin-Film Organic Field-Effect Transistors
In electronics, the field-effect transistor (FET) is a crucial cornerstone and successful integration of this semiconductor device into circuit applications requires stable and ideal electrical characteristics over a wide range of temperatures and environments. Solution processing, using printing or coating techniques, has been explored to manufacture organic field-effect transistors (OFET) on flexible carriers, enabling radically novel electronics applications. Ideal electrical characteristics, in organic materials, are typically only found in single crystals. Tiresome growth and manipulation of these hamper practical production of flexible OFETs circuits. To date, neither devices nor any circuits, based on solution-processed OFETs, has exhibited an ideal set of characteristics similar or better than todays FET technology based on amorphous silicon. Here, bar-assisted meniscus shearing of dibenzo-tetrathiafulvalene to coat-process self-organized crystalline organic semiconducting domains with high reproducibility is reported. Including these coatings as the channel in OFETs, electric field and temperature-independent charge carrier mobility and no bias stress effects are observed. Furthermore, record-high gain in OFET inverters and exceptional operational stability in both air and water are measured.Funding Agencies|ERC [StG 2012-306826]; Networking Research Center on Bioengineering, Biomaterials, and Nanomedicine (CIBER-BBN); DGI (Spain) [BE-WELL CTQ2013-40480-R]; Generalitat de Catalunya [2014-SGR-17]; Advanced Functional Materials Center at Linkoping University; Onnesjo Foundation; Knut and Alice Wallenberg Foundation; Swedish Foundation for Strategic Research (SSF); Universidad Tecnica de Ambato; Secretaria de Educacion Superior, Ciencia, Tecnologia e Innovacion</p