scholarly journals Raman Spectroscopic Studies of Dinaphthothienothiophene (DNTT)

Materials ◽  
2019 ◽  
Vol 12 (4) ◽  
pp. 615 ◽  
Author(s):  
Bishwajeet Bhardwaj ◽  
Takeshi Sugiyama ◽  
Naoko Namba ◽  
Takayuki Umakoshi ◽  
Takafumi Uemura ◽  
...  
Keyword(s):  
Charge Carrier ◽  
Carrier Mobility ◽  
Density Functional ◽  
Field Effect Transistors ◽  
Charge Carrier Mobility ◽  
Spectroscopic Studies ◽  
Organic Field Effect Transistors ◽  
Functional Theory ◽  
Raman Spectroscopic ◽  
The Density Functional Theory

The application of dinaphthothienothiophene (DNTT) molecules, a novel organic semiconductor material, has recently increased due to its high charge carrier mobility and thermal stability. Since the structural properties of DNTT molecules, such as the molecular density distribution and molecular orientations, significantly affect their charge carrier mobility in organic field-effect transistors devices, investigating these properties would be important. Here, we report Raman spectroscopic studies on DNTT in a transistor device, which was further analyzed by the density functional theory. We also show a perspective of this technique for orientation analysis of DNTT molecules within a transistor device.

Dianthraceno[a,e]pentalenes: synthesis, crystallographic structures and applications in organic field-effect transistors

2015 ◽  
Vol 51 (3) ◽  
pp. 503-506 ◽  
Author(s):  
Gaole Dai ◽  
Jingjing Chang ◽  
Wenhua Zhang ◽  
Shiqiang Bai ◽  
Kuo-Wei Huang ◽  
...  
Keyword(s):  
Charge Carrier ◽  
Field Effect ◽  
Carrier Mobility ◽  
Field Effect Transistors ◽  
Charge Carrier Mobility ◽  
Dense Packing ◽  
Organic Field Effect Transistors ◽  
High Charge ◽  
Crystallographic Structures ◽  
High Charge Carrier Mobility

Two stable dianthraceno[a,e]pentalenes were synthesized and DAP2 exhibited a high charge carrier mobility of 0.65 cm2 V−1 s−1 due to its dense packing.

Effect of Film Morphology on Charge Transport in C60-based Organic Field Effect Transistors

2010 ◽  
Vol 1270 ◽  
Author(s):  
Mujeeb Ullah ◽  
Andrey K. Kadashchuk ◽  
Philipp Stadler ◽  
Alexander Kharchenko ◽  
Almantas Pivrikas ◽  
...  
Keyword(s):  
Grain Size ◽  
Charge Carrier ◽  
Substrate Temperature ◽  
Charge Transport ◽  
Field Effect ◽  
Carrier Mobility ◽  
Field Effect Transistors ◽  
Charge Carrier Mobility ◽  
Film Morphology ◽  
Organic Field Effect Transistors

AbstractThe critical factor that limits the efficiencies of organic electronic devices is the low charge carrier mobility which is attributed to disorder in organic films. In this work we study the effects of active film morphology on the charge transport in Organic Field Effect Transistors (OFETs). We fabricated the OFETs using different substrate temperature to grow different morphologies of C60 films by Hot Wall Epitaxy. Atomic Force Microscopy images and XRD results showed increasing grain size with increasing substrate temperature. An increase in field effect mobility was observed for different OFETs with increasing grain size in C60 films. The temperature dependence of charge carrier mobility in these devices followed the empirical relation named as Meyer-Neldel Rule and showed different activation energies for films with different degree of disorder. A shift in characteristic Meyer-Neldel energy was observed with changing C60 morphology which can be considered as an energetic disorder parameter.

A bowl-shaped sumanene derivative with dense convex–concave columnar packing for high-performance organic field-effect transistors

2017 ◽  
Vol 53 (83) ◽  
pp. 11407-11409 ◽  
Author(s):  
Beibei Fu ◽  
Xueqing Hou ◽  
Cong Wang ◽  
Yu Wang ◽  
Xiaotao Zhang ◽  
...  
Keyword(s):  
Charge Carrier ◽  
Single Crystal ◽  
Field Effect ◽  
High Performance ◽  
Carrier Mobility ◽  
Field Effect Transistors ◽  
Charge Carrier Mobility ◽  
Organic Field Effect Transistors ◽  
Crystal Field Effect ◽  
First Time

The charge carrier mobility of a sumanene derivative was probed using single-crystal field-effect transistors for the first time.

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.

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.

Ligand Engineering in Cu(II) Paddle Wheel Metal-Organic Frameworks for Enhanced Electrical Conductivity

2020 ◽  
Author(s):  
Matthias Golomb ◽  
Joaquín Calbo ◽  
Jessica K. Bristow ◽  
Aron Walsh
Keyword(s):  
Charge Carrier ◽  
Carrier Mobility ◽  
Density Functional ◽  
Metal Organic Frameworks ◽  
Building Blocks ◽  
Charge Carrier Mobility ◽  
Functional Theory ◽  
Paddle Wheel ◽  
Metal Organic ◽  
Crystal Orbitals

We report the electronic structure of two metal-organic frameworks (MOFs) with copper paddle wheel nodes connected by a N<sub>2</sub>(C<sub>2</sub>H<sub>4</sub>)<sub>3</sub> (DABCO) ligand with accessible nitrogen lone pairs. The coordination is predicted, from first-principles density functional theory, to enable electronic pathways that could facilitate charge carrier mobility. Calculated frontier crystal orbitals indicate extended electronic communication in DMOF-1, but not in MOF-649. This feature is confirmed by bandstructure calculations and effective masses of the valence band egde. We explain the origin of the frontier orbitals of both MOFs based on the energy and symmetry alignment of the underlying building blocks. The effects of doping on the bandstructure of MOF-649 are considered. Our findings highlight DMOF-1 as a potential semiconductor with 1D charge carrier mobility along the framework

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