scholarly journals Incorporating Cyano Groups to a Conjugated Polymer Based on Double B←N Bridged Bipyridine Unit for Unipolar n-Type Organic Field-Effect Transistors

2021 ◽  
Author(s):  
Jun Liu ◽  
Xu Cao ◽  
Yang Min ◽  
Hongkun Tian
Keyword(s):  
Conjugated Polymers ◽  
Conjugated Polymer ◽  
Field Effect ◽  
Field Effect Transistors ◽  
Energy Levels ◽  
Semiconducting Polymers ◽  
Organic Field Effect Transistors ◽  
Strong Electron ◽  
Cyano Groups ◽  
P Type

The development of n-type semiconductors lags far behind that of their p-type counterparts, demonstrating the exploration of exclusive n-type π-conjugated polymers is significant. The double B←N bridged bipyridine (BNBP)-based polymers P-BNBP-TVT containing (E)-1,2-di(thiophen-2-yl)ethene (TVT) previously reported exhibits ambipolar character because of the electron-rich nature. Herein, we incorporated strong electron-withdrawing cyano groups into the 3,3’-positions of TVT moiety to a copolymer P-BNBP-2CNTVT to develop n-type π-conjugated polymers. The LUMO/HOMO energy levels of P-BNBP-2CNTVT are –3.80/–5.95 eV, respectively, which are ~0.4 eV lower than that of P-BNBP-TVT without cynao groups. Unsurprisingly, compared with ambipolar P-BNBP-TVT, the organic field‐effect transistors (OFETs) based on P-BNBP-2CNTVT showed unipolar n-type characteristics with an electron mobility of 0.026 cm2 V–1 s–1 and lower threshold voltage of ~25 V as well as high Ion/Ioff of ~105. This study demonstrates organoboron π-conjugated polymers could be regarded as a tool for constructing exclusive n-type semiconducting polymers used in OFETs.

scholarly journals Unprecedented quinoid-donor-acceptor strategy to boost carrier mobilities of semiconducting polymers for organic field-effect transistors

2021 ◽  
Author(s):  
Cheng Liu ◽  
Xuncheng Liu ◽  
Guohui Zheng ◽  
Xiu Gong ◽  
Chen Yang ◽  
...  
Keyword(s):  
Conjugated Polymers ◽  
Field Effect ◽  
Field Effect Transistors ◽  
High Mobility ◽  
Semiconducting Polymers ◽  
Organic Field Effect Transistors ◽  
Donor Acceptor ◽  
Application Potential

Quinoidal-aromatic conjugated polymers hold great application potential in organic field-effect transistors (OFETs). However, the development of high mobility quinoidal-aromatic conjugated polymers still lags behind the more popular donor-acceptor (D-A) conjugated...

Pyridine-bridged diketopyrrolopyrrole conjugated polymers for field-effect transistors and polymer solar cells

2015 ◽  
Vol 6 (26) ◽  
pp. 4775-4783 ◽  
Author(s):  
Xiaotao Zhang ◽  
Chengyi Xiao ◽  
Andong Zhang ◽  
Fangxu Yang ◽  
Huanli Dong ◽  
...  
Keyword(s):  
Solar Cells ◽  
Conjugated Polymers ◽  
Field Effect ◽  
Field Effect Transistors ◽  
Polymer Solar Cells ◽  
Energy Levels ◽  
Organic Field Effect Transistors ◽  
Variable Energy

Five different pyridine-bridged diketopyrrolopyrrole-based polymers with variable energy levels were applied in organic field-effect transistors and polymer solar cells.

scholarly journals 2,2'-(Arylenedivinylene)bis-8-hydroxyquinolines exhibiting aromatic π-π stacking interactions as solution-processable p-type organic semiconductors for high-performance organic field effect transistors

2021 ◽  
Author(s):  
Suman Yadav ◽  
Shivani Sharma ◽  
Satinder K Sharma ◽  
Chullikkattil P. Pradeep
Keyword(s):  
Organic Semiconductors ◽  
Field Effect ◽  
High Performance ◽  
Field Effect Transistor ◽  
Field Effect Transistors ◽  
Organic Field Effect Transistors ◽  
Organic Thin Film ◽  
Effect Transistor ◽  
Solution Processable ◽  
P Type

Solution-processable organic semiconductors capable of functioning at low operating voltages (~5 V) are in demand for organic field-effect transistor (OFET) applications. Exploration of new classes of compounds as organic thin-film...

Methoxylation of quinoidal bithiophene as a single regioisomer building block for narrow-bandgap conjugated polymers and high-performance organic field-effect transistors

2020 ◽  
Vol 8 (43) ◽  
pp. 15168-15174 ◽  
Author(s):  
Yunlong Sun ◽  
Yunpeng Zhang ◽  
Yang Ran ◽  
Longxian Shi ◽  
Qingsong Zhang ◽  
...  
Keyword(s):  
Conjugated Polymers ◽  
Building Block ◽  
Field Effect ◽  
High Performance ◽  
Field Effect Transistors ◽  
Hole Mobility ◽  
Methoxyl Group ◽  
Organic Field Effect Transistors ◽  
Narrow Bandgap

Methoxyl group was introduced to obtain isomer-free methoxylation quinoidal bithiophene building block. Four polymers displayed narrow bandgap (<1.20 eV) and hole mobility of up to 2.70 cm2 V−1 s−1.

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