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

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.

scholarly journals Raman investigation of electric field induced molecular modifications in organic field effect transistors

ELEMENTOS ◽  
2013 ◽  
Vol 2 (2) ◽  
Author(s):  
Beynor Antonio Paez Sierra ◽  
Fredy Giovanni Mesa Rodríguez
Keyword(s):  
Electric Field ◽  
Electric Fields ◽  
Field Effect ◽  
Density Functional ◽  
Field Effect Transistors ◽  
Dipole Interaction ◽  
Original Structure ◽  
Organic Layer ◽  
Organic Field Effect Transistors ◽  
Functional Theory

The influence of external electric fields on the vibrational properties of Pentacene-based field effect transistors were investigated by Ramanspectroscopy.ThemonitoredRamanbandswereintherangefrom 1100cm−1 to1200cm−1,whereabroadbandispresentandenhanceddue to the external electric field. The process is modeled by density functional theory (DFT) at the B3LYP/3–21G level. Additionally, the relaxation of the Raman bands after the removal of the external field was determined from an exponential Debye like decay fitting to be approximately 94 min, this finding indicates that a long relaxation time ca. 8 h is required in order to recover the original structure. Experimentally and theoretically was demonstrated that the applied electric fields induce artificial traps in the organic layer mediated by charge carrier–dipole interaction.

scholarly journals Effect of contact resistance in organic field‐effect transistors

Nano Select ◽  
2021 ◽  
Author(s):  
Yanjun Shi ◽  
Jie Liu ◽  
Yuanyuan Hu ◽  
Wenping Hu ◽  
Lang Jiang
Keyword(s):  
Contact Resistance ◽  
Field Effect ◽  
Field Effect Transistors ◽  
Organic Field Effect Transistors

Isomeric Dibenzoheptazethrenes for Air‐stable Organic Field‐effect Transistors

2021 ◽  
Author(s):  
Chaoyang Zong ◽  
Xiaoting Zhu ◽  
Zhanqiang Xu ◽  
Lifeng Zhang ◽  
Jun Xu ◽  
...  
Keyword(s):  
Field Effect ◽  
Field Effect Transistors ◽  
Organic Field Effect Transistors

scholarly journals Recent structural evolution of lactam- and imide-functionalized polymers applied in organic field-effect transistors and organic solar cells

2021 ◽  
Author(s):  
Yankai Zhou ◽  
Weifeng Zhang ◽  
Gui Yu
Keyword(s):  
Solar Cells ◽  
Organic Solar Cells ◽  
Field Effect ◽  
Field Effect Transistors ◽  
Structural Evolution ◽  
Functionalized Polymers ◽  
Organic Field Effect Transistors

This review highlights the recent structural evolution of lactam- and imide-functionalized polymers applied in organic field-effect transistors and organic solar cells.

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