Visible-blind UV monitoring with a photochromic charge trapping layer in organic field-effect transistors

2019 ◽  
Vol 115 (11) ◽  
pp. 113302 ◽  
Author(s):  
Jing-Jing Lv ◽  
Xu Gao ◽  
Lin-Xi Zhang ◽  
Yang Feng ◽  
Jian-Long Xu ◽  
...  
Keyword(s):  
Field Effect ◽  
Field Effect Transistors ◽  
Charge Trapping ◽  
Organic Field Effect Transistors ◽  
Visible Blind

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.

scholarly journals Charge Trapping by Self-Assembled Monolayers as the Origin of the Threshold Voltage Shift in Organic Field-Effect Transistors

Small ◽  
2011 ◽  
Vol 8 (2) ◽  
pp. 241-245 ◽  
Author(s):  
Fatemeh Gholamrezaie ◽  
Anne-Marije Andringa ◽  
W. S. Christian Roelofs ◽  
Alfred Neuhold ◽  
Martijn Kemerink ◽  
...  
Keyword(s):  
Threshold Voltage ◽  
Field Effect ◽  
Field Effect Transistors ◽  
Charge Trapping ◽  
Self Assembled Monolayers ◽  
Organic Field Effect Transistors ◽  
Threshold Voltage Shift ◽  
Voltage Shift ◽  
Assembled Monolayers ◽  
Self Assembled

Charge-Trapping-Induced Non-Ideal Behaviors in Organic Field-Effect Transistors

2018 ◽  
Vol 30 (18) ◽  
pp. 1800017 ◽  
Author(s):  
Hio-Ieng Un ◽  
Peng Cheng ◽  
Ting Lei ◽  
Chi-Yuan Yang ◽  
Jie-Yu Wang ◽  
...  
Keyword(s):  
Field Effect ◽  
Field Effect Transistors ◽  
Charge Trapping ◽  
Organic Field Effect Transistors

The Influence of Diketopyrrolopyrrole Chemical Structure on Organic Field-Effect Transistors Performance

2016 ◽  
Vol 851 ◽  
pp. 189-193
Author(s):  
Stanislav Stříteský ◽  
Jozef Krajčovič ◽  
Martin Vala ◽  
Martin Weiter
Keyword(s):  
Organic Semiconductors ◽  
Field Effect ◽  
Soluble Group ◽  
Gate Dielectrics ◽  
Field Effect Transistors ◽  
Charge Trapping ◽  
Charge Carrier Mobility ◽  
Self Assembled Monolayers ◽  
Organic Field Effect Transistors ◽  
Assembled Monolayers

Organic semiconductors are suitable for application in biosensors and sensors based on transistors. The influence of soluble group modifications on the performance of diketopyrrolopyrrole-based organic field-effect transistors (OFETs) is studied. The lowest mobility 1·10-9 cm2/Vs was observed for non-symmetric substitution O,N. Measurable charge carrier mobility was observed due to reduction of the density charge trapping states after application of organosilane self-assembled monolayers (SAMs) on thinner gate-dielectrics (90 nm). We report similar drift mobility 1·10-7 cm2/Vs for smallest soluble group “butyl” as for biggest group “EthylAdamantyl” in N,N and O,O substitution prepared by spin-coating.

Light-activated electric bistability for evaporated silver nanoparticles in organic field-effect transistors

2017 ◽  
Vol 19 (27) ◽  
pp. 17653-17660 ◽  
Author(s):  
Tao Han ◽  
Linlin Liu ◽  
Mingying Wei ◽  
Cong Wang ◽  
Xiaoyan Wu ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Field Effect ◽  
Field Effect Transistors ◽  
Charge Trapping ◽  
Charge Storage ◽  
Organic Field Effect Transistors ◽  
Positive Effects ◽  
Storage Media ◽  
Trapping Process ◽  
Trapped Charge

Evaporated naked silver nanoparticles were embedded in the isolated layer of PTB7-based OFET, where the electric bistability behavior was successfully activated by photo-irradiation. The photoradiation has positive effects both in the charge trapping process and the trapped charge confinement in charge storage media.

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