scholarly journals Localizing trapped charge carriers in NO2 sensors based on organic field-effect transistors

2012 ◽  
Vol 101 (15) ◽  
pp. 153302 ◽  
Author(s):  
Anne-Marije Andringa ◽  
W. S. Christian Roelofs ◽  
Michael Sommer ◽  
Mukundan Thelakkat ◽  
Martijn Kemerink ◽  
...  
Keyword(s):  
Field Effect ◽  
Field Effect Transistors ◽  
Charge Carriers ◽  
Organic Field Effect Transistors ◽  
Trapped Charge

Self-Assembled Dipoles of o-Carborane on Gate Oxide Tuning Charge Carriers in Organic Field Effect Transistors

2021 ◽  
Author(s):  
Ming Chu ◽  
Jie Zhang ◽  
Xingwei Zeng ◽  
Zefeng Chen ◽  
Danqing Liu ◽  
...  
Keyword(s):  
Field Effect ◽  
Field Effect Transistors ◽  
Gate Oxide ◽  
Charge Carriers ◽  
Acid Form ◽  
Organic Field Effect Transistors ◽  
Self Assembled Monolayer ◽  
Self Assembled

Molecules of 12-o-carboranyldodecylphosphonic acid form a novel self-assembled monolayer (SAM) on alumina, which can effectively tune charge carriers in organic field effect transistors (OFETs) with the assembled dipoles of o−carborane...

scholarly journals The Quinonoid Zwitterion Interlayer for the Improvement of Charge Carrier Mobility in Organic Field-Effect Transistors

Polymers ◽  
2021 ◽  
Vol 13 (10) ◽  
pp. 1567
Author(s):  
Adam Luczak ◽  
Angélina Ruiz ◽  
Simon Pascal ◽  
Adrian Adamski ◽  
Jarosław Jung ◽  
...  
Keyword(s):  
Charge Carrier ◽  
Field Effect ◽  
Carrier Mobility ◽  
Field Effect Transistors ◽  
Charge Carrier Mobility ◽  
Charge Carriers ◽  
Organic Field Effect Transistors ◽  
Order Of Magnitude ◽  
Charge Carrier Trapping ◽  
Trapping Sites

The interface between the semiconductor and the dielectric layer plays a crucial role in organic field-effect transistors (OFETs) because it is at the interface that charge carriers are accumulated and transported. In this study, four zwitterionic benzoquinonemonoimine dyes featuring alkyl and aryl N-substituents were used to cover the dielectric layers in OFET structures. The best interlayer material, containing aliphatic side groups, increased charge carrier mobility in the measured systems. This improvement can be explained by the reduction in the number of the charge carrier trapping sites at the dielectric active layer interface from 1014 eV−1 cm−2 to 2 × 1013 eV−1 cm−2. The density of the traps was one order of magnitude lower compared to the unmodified transistors. This resulted in an increase in charge carrier mobility in the tested poly [2,5-(2-octyldodecyl)-3,6-diketopyrrolopyrrole-alt-5,5-(2,5-di(thien-2-yl)thieno [3,2-b]thiophene)] (DPPDTT)-based transistors to 5.4 × 10−1 cm2 V−1 s−1.

Degradation Process in Pentacene-Based Organic Field-Effect Transistors Evaluated by Three-Terminal Capacitance-Voltage Measurements

MRS Advances ◽  
2017 ◽  
Vol 2 (23) ◽  
pp. 1267-1272 ◽  
Author(s):  
Yuya Tanaka ◽  
Kohei Yamamoto ◽  
Yutaka Noguchi ◽  
Hisao Ishii
Keyword(s):  
Field Effect ◽  
Stress Measurement ◽  
Field Effect Transistors ◽  
Degradation Process ◽  
Hole State ◽  
Organic Field Effect Transistors ◽  
Bias Stress ◽  
Insulator Interface ◽  
Capacitance Voltage ◽  
Trapped Charge

ABSTRACTBy taking advantage of three-terminal capacitance-voltage (TT-CV) measurement, we investigated a formation of trapped charge in pentacene(Pn)-based organic field-effect transistors (OFETs) during the bias stress measurement. The shift of the turn-on voltage in transfer curve correlated well with the increase of trapped charge estimated from TT-CV curves. Moreover, TT-CV measurement revealed that the trapped charges were distributed inhomogeneously at the vicinity of the pentacene/insulator interface, indicating that the current does not obviously affect their formation. Thus we suggested that the trapped charges are formed by keeping Pn molecules as unstable cation (hole state) by the prolonged bias stress.

scholarly journals Charge transport in disordered organic field-effect transistors

2002 ◽  
Vol 725 ◽  
Author(s):  
Cristina Tanase ◽  
Paul W.M. Blom ◽  
Eduard J. Meijer ◽  
Dago M. de Leeuw
Keyword(s):  
Charge Carrier ◽  
Field Effect ◽  
Carrier Mobility ◽  
Field Effect Transistors ◽  
Charge Carrier Mobility ◽  
Charge Carriers ◽  
Localized States ◽  
Charge Carrier Density ◽  
Organic Field Effect Transistors ◽  
Good Agreement

AbstractThe transport properties of poly(2,5-thienylene vinylene) (PTV) field-effect transistors (FET) have been investigated as a function of temperature under controlled atmosphere. In a disordered semiconductor as PTV the charge carrier mobility, dominated by hopping between localized states, is dependent on the charge carrier density. The transfer characteristics of PTV FET have been modeled considering the distribution of charge carriers and mobility over the accumulation channel. Good agreement with the experimental data is obtained.

Hall Effect in Organic Single-crystal Field-effect Transistors

2006 ◽  
Vol 937 ◽  
Author(s):  
Jun Takeya ◽  
Koichi Yamada ◽  
Kazuhito Tsukagoshi ◽  
Yoshinobu Aoyagi ◽  
Taishi Takenobu ◽  
...  
Keyword(s):  
Electric Field ◽  
Hall Effect ◽  
Field Effect ◽  
Field Effect Transistors ◽  
Charge Carriers ◽  
Direct Access ◽  
Positive Sign ◽  
Organic Field Effect Transistors ◽  
Crystal Field Effect ◽  
Gas System

ABSTRACTWe report Hall effect of charge carriers accumulated in organic field-effect transistors. Rubrene (C42H28) single crystals are shaped in to the Hall-bar congiguration in the devices so that the Hall signal is appropriately detected in external magnetic fields. It turned out that inverse Hall coefficient, having a positive sign, is close to the amount of electric-field induced charge upon the hole accumulation. The observation of the normal Hall effect means that the electromagnetic character of the surface charge is not of hopping carriers but resembles that of a two-dimensional hole-gas system. The direct access to the density of mobile charge carriers provides a tool to understand nontrivial features of organic field-effect transistors such as gate electric field dependent mobility.

Light-activated electric bistability for evaporated silver nanoparticles in organic field-effect transistors

2017 ◽  
Vol 19 (27) ◽  
pp. 17653-17660 ◽  
Author(s):  
Tao Han ◽  
Linlin Liu ◽  
Mingying Wei ◽  
Cong Wang ◽  
Xiaoyan Wu ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Field Effect ◽  
Field Effect Transistors ◽  
Charge Trapping ◽  
Charge Storage ◽  
Organic Field Effect Transistors ◽  
Positive Effects ◽  
Storage Media ◽  
Trapping Process ◽  
Trapped Charge

Evaporated naked silver nanoparticles were embedded in the isolated layer of PTB7-based OFET, where the electric bistability behavior was successfully activated by photo-irradiation. The photoradiation has positive effects both in the charge trapping process and the trapped charge confinement in charge storage media.

scholarly journals From chemical curiosity to versatile building blocks: unmasking the hidden potential of main-group phthalocyanines in organic field-effect transistors

2021 ◽  
Author(s):  
Weiyi Zhou ◽  
Nathan J. Yutronkie ◽  
Benoît H. Lessard ◽  
Jaclyn L. Brusso
Keyword(s):  
Organic Semiconductors ◽  
Field Effect ◽  
Field Effect Transistors ◽  
Building Blocks ◽  
Main Group ◽  
Charge Carriers ◽  
Organic Field Effect Transistors

Main-group phthalocyanines are an emerging class of organic semiconductors with versatile charge carriers in field-effect transistors. In this review, an overview is provided on the synthesis of these building blocks and device performances.

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