Enhanced Environmental Stability Induced by Effective Polarization of a Polar Dielectric Layer in a Trilayer Dielectric System of Organic Field-Effect Transistors: A Quantitative Study

2015 ◽  
Vol 7 (3) ◽  
pp. 1915-1924 ◽  
Author(s):  
Nimmakayala V. V. Subbarao ◽  
Murali Gedda ◽  
Parameswar K. Iyer ◽  
Dipak K. Goswami
Keyword(s):  
Quantitative Study ◽  
Dielectric Layer ◽  
Field Effect ◽  
Field Effect Transistors ◽  
Environmental Stability ◽  
Organic Field Effect Transistors ◽  
Polar Dielectric ◽  
Dielectric System ◽  
Effective Polarization

Flexible organic field-effect transistors fabricated by the electrode-peeling transfer

2003 ◽  
Vol 769 ◽  
Author(s):  
Takeshi Yasuda ◽  
Katsuhiko Fujita ◽  
Tetsuo Tsutsui
Keyword(s):  
Dielectric Layer ◽  
Field Effect ◽  
Field Effect Transistors ◽  
Flexible Substrate ◽  
Chemical Vapor ◽  
Solid Substrate ◽  
Semiconductor Material ◽  
Organic Field Effect Transistors ◽  
Gate Electrode ◽  
Micro Patterning

AbstractWe report a simple and mild fabrication of flexible organic field-effect transistors (OFETs) by an electrode-peeling transfer method. Firstly, fine patterns of source-drain metal electrodes were formed on a solid substrate, where a micro-patterning process such as photolithography is applicable. An organic dielectric layer (poly-chloro-p-xylylene) was deposited by a chemical vapor deposition. Then patterned gate electrode was deposited using a shadow mask. On the top surface of the gate electrode, another adhesive flexible substrate was fixed and the stack of the flexible substrate/gate electrode /dielectric layer /source-drain electrode was peeled away from the solid substrate. The peeling-transfer was completed with a help of a self-assembled monolayer of n-decyl mercaptan as a connecting buffer layer between the gold electrodes and the dielectric layer. Then an organic semiconductor material was deposited on the fresh peeled-off surface on the flexible substrate. When pentacene was used as the semiconductor material, the OFETs exhibited a hole mobility of 0.1 cm2/Vs and a current on/off ratio of 105.

scholarly journals Bandgap Engineering of an Aryl-Fused Tetrathianaphthalene for Visible-Blind Organic Field-Effect Transistors

2021 ◽  
Vol 9 ◽  
Author(s):  
Lijuan Zhang ◽  
Xinzi Tian ◽  
Yantao Sun ◽  
Jiarong Yao ◽  
Shuyuan Yang ◽  
...  
Keyword(s):  
Field Effect ◽  
Large Scale ◽  
Near Infrared ◽  
Field Effect Transistors ◽  
Ambient Air ◽  
Operational Stability ◽  
Environmental Stability ◽  
Organic Field Effect Transistors ◽  
Major Barrier ◽  
Visible Blind

Stability problem of organic semiconductors (OSCs) because of photoabsorption has become a major barrier to large scale applications in organic field-effect transistors (OFETs). It is imperative to design OSCs which are insensitive to visible and near-infrared (VNIR) light to obtain both environmental and operational stability. Herein, taking a 2,3,8,9-tetramethoxy [1,4]benzodithiino[2,3-b][1,4]benzodithiine (TTN2) as an example, we show that controlling molecular configuration is an effective strategy to tune the bandgaps of OSCs for visible-blind OFETs. TTN2 adopts an armchair-like configuration, which is different from the prevailing planar structure of common OSCs. Because of the large bandgap, TTN2 exhibits no photoabsorption in the VNIR region and OFETs based on TTN2 show high environmental stability. The devices worked well after being stored in ambient air, (i.e. in the presence of oxygen and water) and light for over two years. Moreover, the OFETs show no observable response to light irradiation from 405–1,020 nm, which is also favorable for high operational stability.

Conjugated polymer/paraffin blends for organic field-effect transistors with high environmental stability

Nanoscale ◽  
2019 ◽  
Vol 11 (20) ◽  
pp. 10004-10016 ◽  
Author(s):  
Solip Choi ◽  
Jae Won Jeong ◽  
Gyounglyul Jo ◽  
Byung Chol Ma ◽  
Mincheol Chang
Keyword(s):  
Conjugated Polymer ◽  
Field Effect ◽  
Field Effect Transistors ◽  
Environmental Stability ◽  
Organic Field Effect Transistors

High environmental stability of organic field-effect transistors is achieved by the use of conjugated polymer/paraffin blends.

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