Molecular Orientation Control of Liquid Crystal Organic Semiconductor for High-Performance Organic Field-Effect Transistors

2021 ◽  
Vol 13 (9) ◽  
pp. 11125-11133
Author(s):  
Moon Jong Han ◽  
Don-Wook Lee ◽  
Eun Kyung Lee ◽  
Joo-Young Kim ◽  
Ji Young Jung ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Organic Semiconductor ◽  
Molecular Orientation ◽  
Field Effect ◽  
High Performance ◽  
Field Effect Transistors ◽  
Organic Field Effect Transistors ◽  
Orientation Control

scholarly journals Exploring the Critical Thickness of Organic Semiconductor Layer for Enhanced Piezoresistive Sensitivity in Field-Effect Transistor Sensors

Materials ◽  
2020 ◽  
Vol 13 (7) ◽  
pp. 1583 ◽  
Author(s):  
Damien Thuau ◽  
Katherine Begley ◽  
Rishat Dilmurat ◽  
Abduleziz Ablat ◽  
Guillaume Wantz ◽  
...  
Keyword(s):  
Organic Semiconductors ◽  
Organic Semiconductor ◽  
Field Effect ◽  
High Performance ◽  
Critical Thickness ◽  
Field Effect Transistors ◽  
Mechanical Strain ◽  
Semiconductor Layer ◽  
Organic Field Effect Transistors ◽  
P Type

Organic semiconductors (OSCs) are promising transducer materials when applied in organic field-effect transistors (OFETs) taking advantage of their electrical properties which highly depend on the morphology of the semiconducting film. In this work, the effects of OSC thickness (ranging from 5 to 15 nm) on the piezoresistive sensitivity of a high-performance p-type organic semiconductor, namely dinaphtho [2,3-b:2,3-f] thieno [3,2–b] thiophene (DNTT), were investigated. Critical thickness of 6 nm thin film DNTT, thickness corresponding to the appearance of charge carrier percolation paths in the material, was demonstrated to be highly sensitive to mechanical strain. Gauge factors (GFs) of 42 ± 5 and −31 ± 6 were measured from the variation of output currents of 6 nm thick DNTT-based OFETs engineered on top of polymer cantilevers in response to compressive and tensile strain, respectively. The relationship between the morphologies of the different thin films and their corresponding piezoresistive sensitivities was discussed.

Precise Patterning of Single Crystal Arrays of Organic Semiconductors by Patterned Microchannel Dip-coating Method for Organic Field-Effect Transistors

2021 ◽  
Author(s):  
Chaoqiang Wang ◽  
Zhengjun Lu ◽  
Wei Deng ◽  
Wanqin Zhao ◽  
Bei Lu ◽  
...  
Keyword(s):  
Single Crystals ◽  
Organic Semiconductors ◽  
Organic Semiconductor ◽  
Field Effect ◽  
High Performance ◽  
Field Effect Transistors ◽  
Dip Coating ◽  
Organic Field Effect Transistors ◽  
Coating Method ◽  
Dip Coating Method

Control over the growth location and orientation of organic semiconductor single crystals (OSSCs) is of key importance to enable high-performance organic circuits. However, the previous approaches are difficult to create...

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