Alkoxy functionalized benzothiadiazole based donor–acceptor conjugated copolymers for organic field-effect transistors

2021 ◽  
Author(s):  
Marc Comí ◽  
Dhananjaya Patra ◽  
Rui Yang ◽  
Zhihui Chen ◽  
Alexandra Harbuzaru ◽  
...  
Keyword(s):  
Charge Carrier ◽  
Transport Properties ◽  
Field Effect ◽  
Carrier Transport ◽  
Field Effect Transistors ◽  
Charge Carrier Transport ◽  
Organic Field Effect Transistors ◽  
Donor Acceptor ◽  
Optoelectronic Applications ◽  
Carrier Transport Properties

Benzothiadiazole (BT) and its derivatives have been widely used as strong acceptors for enhancing π-stacking and improving the charge carrier transport properties in optoelectronic applications.

scholarly journals Synthesis and Performance of (E)-3-Phenyl-2-(thiophen-2-yl)acrylonitrile-Based Small-Molecule Semiconductors

2019 ◽  
Vol 01 (01) ◽  
pp. 078-087
Author(s):  
Dizao Li ◽  
Qiang Wang ◽  
Liping Wang ◽  
Weifeng Zhang ◽  
Gui Yu
Keyword(s):  
Thermal Stability ◽  
Charge Carrier ◽  
Transport Properties ◽  
Small Molecule ◽  
Carrier Transport ◽  
Field Effect Transistors ◽  
Outer Side ◽  
Charge Carrier Transport ◽  
P Type ◽  
Carrier Transport Properties

Based on diketopyrrolopyrrole (DPP) and (E)-3-phenyl-2-(thiophen-2-yl)acrylonitrile (BVCNT)-linked conjugated backbones, three donor–acceptor type conjugated organic small-molecule compounds DPP-BVCNT, DPP-2FBVCNT, and DPP-3FBVCNT were designed and synthesized. Among them, the 2-decyltetradecyl side chain on the DPP acceptor unit was used to ensure the solubility of the material. The fluorine (F) atoms combined with the nitrile on the BVCNT donor unit were used to adjust electronic structures and charge carrier transport properties of the conjugated system. All the three small molecules exhibited good solution dispersibility and thermal stability, providing an important guarantee for the solution processing and annealing optimization of organic field-effect transistors (OFETs). The top-gate-bottom-contact OFET devices based on these compounds showed good ambipolar or p-type performances. The relationship between molecular structures and OFET performances indicated that the F-substitution and its position significantly affected their charge carrier transport properties. The F-substitution could remarkably change the performance from p-type to ambipolar especially for the outer-side-F-substituted compound DPP-2FBVCNT, which showed the best OFET performances with the maximum hole/electron mobilities of 0.023/0.220 cm2 V−1 s−1. These results provided a promising idea for developing small-molecule OFET materials with good solution processability, good thermal stability, and high ambipolar performances.

Carrier Transport Properties of Monodisperse Glassy-Nematic Oligofluorenes in Organic Field-Effect Transistors

2005 ◽  
Vol 17 (2) ◽  
pp. 264-268 ◽  
Author(s):  
Takeshi Yasuda ◽  
Katsuhiko Fujita ◽  
Tetsuo Tsutsui ◽  
Yanhou Geng ◽  
Sean W. Culligan ◽  
...  
Keyword(s):  
Transport Properties ◽  
Field Effect ◽  
Carrier Transport ◽  
Field Effect Transistors ◽  
Organic Field Effect Transistors ◽  
Carrier Transport Properties
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