Using Sum-Frequency Generation (SFG) to Probe Electric-Fields within Organic Field-Effect Transistors

2016 ◽  
Author(s):  
Douglas J. C. Gomes ◽  
Silvia G. Motti ◽  
Paulo B. Miranda
Keyword(s):  
Electric Fields ◽  
Field Effect ◽  
Field Effect Transistors ◽  
Sum Frequency Generation ◽  
Organic Field Effect Transistors ◽  
Sum Frequency ◽  
Frequency Generation

Direct imaging of electric field behavior in 2,7-diphenyl[1]benzothieno[3,2-b][1]benzothiophene organic field-effect transistors by sum-frequency generation imaging microscopy

2021 ◽  
Author(s):  
Chiho Katagiri ◽  
Takayuki Miyamae ◽  
Hao Li ◽  
Fangyuan Yang ◽  
Steven Baldelli
Keyword(s):  
Electric Field ◽  
Field Effect ◽  
Field Effect Transistors ◽  
Sum Frequency Generation ◽  
Internal Electric Field ◽  
Organic Field Effect Transistors ◽  
Direct Imaging ◽  
Sum Frequency ◽  
Field Behavior ◽  
Frequency Generation

Sum frequency generation imaging microscopy was applied to visualize the internal electric-field behavior in operating organic field effect transistors.

Enhanced Mobility of Organic Field-Effect Transistors with Epitaxially Grown C60 Film by in-situ Heat Treatment of the Organic Dielectric

2005 ◽  
Vol 871 ◽  
Author(s):  
Th. B. Singh ◽  
N. Marjanovic ◽  
G. J. Matt ◽  
S. Günes ◽  
N. S. Sariciftci ◽  
...  
Keyword(s):  
Thin Film ◽  
Electric Fields ◽  
Field Effect ◽  
Film Growth ◽  
Field Effect Transistors ◽  
Growth Conditions ◽  
Initial Growth ◽  
Organic Field Effect Transistors ◽  
Enhanced Mobility ◽  
High Electric Fields

AbstractElectron mobilities were studied as a function of thin-film growth conditions in hot wall epitaxially grown C60 based field-effect transistors. Mobilities in the range of ∼ 0.5 to 6 cm2/Vs are obtained depending on the thin-film morphology arising from the initial growth conditions. Moreover, the field-effect transistor current is determined by the morphology of the film at the interface with the dielectric, while the upper layers are less relevant to the transport. At high electric fields, a non-linear transport has been observed. This effect is assigned to be either because of the dominance of the contact resistance over the channel resistance or because of the gradual move of the Fermi level towards the band edge as more and more empty traps are filled due to charge injection.

Organic Field-Effect Transistors, Inverters, and Logic Circuits on Gate Electrets

2005 ◽  
Vol 889 ◽  
Author(s):  
Cheng Huang ◽  
James E. West ◽  
Howard E. Katz
Keyword(s):  
Organic Semiconductors ◽  
Electric Fields ◽  
Dielectric Layer ◽  
Field Effect ◽  
Field Effect Transistors ◽  
Logic Circuits ◽  
Organic Field Effect Transistors ◽  
Organic Thin Film ◽  
Electronic Components ◽  
Assembled Monolayers

ABSTRACTBy incorporating dielectrics with stored electric fields and organic semiconductors, new organic electronic components such as circuits with controlling voltages “restored” for transistor tuning can be developed. We have successfully used excellent electret materials including charged and surface-treated silicon dioxide (SiO2) and silsesquioxane (SSQ) polymers as the dielectric layer in organic field-effect transistors (OFETs). Charge injection and quasipermanent charge storage induce threshold voltage shifts and current modulation, which results from the built-in electric fields in the conduction channels. Static and dynamic characteristics of organic thin-film transistors (OTFTs) such as charging conditions and voltage/current retention were evaluated. In addition, self-assembled monolayers (SAMs) of dipolar molecules have been utilized in the dielectric layer, with different mechanisms but similar effects compared to charged dielectrics. We also present new OFET unipolar inverters, comprised of only two simple OTFTs with enhancement-mode driver and depletion-mode load to implement full-swing organic logic circuits for process simplification of electronic components in organic electronics.

Giant Transconductance of Organic Field-Effect Transistors in Compensation Electric Fields

2018 ◽  
Vol 10 (5) ◽  
Author(s):  
Yupeng Hu ◽  
Peng Wei ◽  
Xudong Wang ◽  
Laju Bu ◽  
Guanghao Lu
Keyword(s):  
Electric Fields ◽  
Field Effect ◽  
Field Effect Transistors ◽  
Organic Field Effect Transistors
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