scholarly journals Enhanced Performance of Cyclopentadithiophene-Based Donor-Acceptor-Type Semiconducting Copolymer Transistors Obtained by a Wire Bar-Coating Method

Polymers ◽  
2021 ◽  
Vol 14 (1) ◽  
pp. 2
Author(s):  
Doyeon Kim ◽  
Minho Yoon ◽  
Jiyoul Lee

Herein, we report the fabrications of high-performance polymer field-effect transistors (PFETs) with wire bar-coated semiconducting polymer film as an active layer. For an active semiconducting material of the PFETs, we employed cyclopentadithiophene-alt-benzothiadiazole (CDT-BTZ) that is a D-A-type-conjugated copolymer consisting of a repeated electron-donating unit and an electron-accepting unit, and the other two CDT-based D-A-type copolymer analogues are cyclopentadithiophene-alt-fluorinated-benzothiadiazole (CDT-FBTZ) and cyclopentadithiophene-alt-thiadiazolopyridine (CDT-PTZ). The linear field-effect mobility values obtained from the transfer curve of the PFETs fabricated with the spin-coating were 0.04 cm2/Vs, 0.16 cm2/Vs, and 0.31 cm2/Vs, for CDT-BTZ, CDT-FBTZ, and CDT-PTZ, respectively, while the mobility values measured from the PFETs with the wire bar-coated CDT-BTZ film, CDT-FBTZ film, and CDT-PTZ film were 0.16 cm2/Vs, 0.28 cm2/Vs, and 0.95 cm2/Vs, respectively, which are about 2 to 4 times higher values than those of the PFETs with spin-coated films. These results revealed that the aligned molecular chain is beneficial for the D-A-type semiconducting copolymer even though the charge transport in the D-A-type semiconducting copolymer is known to be less critical to the degree of disorder in film.

2009 ◽  
Vol 21 (2) ◽  
pp. NA-NA ◽  
Author(s):  
Hoi Nok Tsao ◽  
Don Cho ◽  
Jens Wenzel Andreasen ◽  
Ali Rouhanipour ◽  
Dag W. Breiby ◽  
...  

2015 ◽  
Vol 27 (34) ◽  
pp. 4949-4949
Author(s):  
Chengyi Xiao ◽  
Guangyao Zhao ◽  
Andong Zhang ◽  
Wei Jiang ◽  
René A. J. Janssen ◽  
...  

2020 ◽  
Vol 8 (18) ◽  
pp. 6006-6012 ◽  
Author(s):  
Fei Qiu ◽  
Yicai Dong ◽  
Jie Liu ◽  
Yanan Sun ◽  
Hua Geng ◽  
...  

We synthesized three asymmetric anthracene derivatives, in which 2-phvA shows a high field-effect mobility of 10 cm2 V−1 s−1. This work demonstrates the potential advantages of asymmetric structures for high-performance organic semiconductors.


2021 ◽  
Author(s):  
Yuanwei Zhu ◽  
Wanlong Lu ◽  
Nan Qiao ◽  
Huize Cui ◽  
Zhipeng Hu ◽  
...  

Abstract Polymers with excellent dielectric and electret capabilities are crucial for energy storage films, organic electronics and environmental filtrations. Nanocomposites is an emerging effective method, but the characteristics of complicated preparation, poor uniformity and high cost restrict its massive and practical applications. Here, we propose a gradient copolymerization strategy with controllable micro-phase interfaces for dielectric capability modulation, and gradient ethylene-styrene copolymer (PESt) exhibits extraordinarily enhanced dielectric, electrical insulating and electret properties against polyethylene and polystyrene. PESt exhibits a dielectric energy density towards 23 J·cm− 3, far exceeding commercially applied polymers and is comparable to nano-composites. By applying PESt as electret layer in organic field-effect transistors, largely enhanced memory window, optimized stability and field-effect mobility over 27 cm2·V− 1·s− 1 are achieved. Finally, PESt electret is employed in environmental filtrations with 20% enhancement in filtration efficiency. The simplicity and processability of gradient copolymerization against nano-composite, further suggest its potential in designing high-performance dielectric/electret polymers.


2015 ◽  
Vol 6 (32) ◽  
pp. 5884-5890 ◽  
Author(s):  
Shengxia Li ◽  
Linrun Feng ◽  
Jiaqing Zhao ◽  
Xiaojun Guo ◽  
Qing Zhang

Thermal cross-linking the bi-functional polymer thin-films at low temperature for gate dielectric application in solution processed organic field-effect transistors.


RSC Advances ◽  
2015 ◽  
Vol 5 (86) ◽  
pp. 70319-70322 ◽  
Author(s):  
Shaowei Shi ◽  
Keli Shi ◽  
Gui Yu ◽  
Xiaoyu Li ◽  
Haiqiao Wang

Two naphthodifuran-based donor–acceptor copolymers are presented. Via reasonable main-chain modification and side-chain engineering, remarkably dense π–π stacking spacings (2 V−1 s−1 are achieved at a moderate annealing temperature of 120 °C.


2013 ◽  
Vol 25 (45) ◽  
pp. 6589-6593 ◽  
Author(s):  
Ting Lei ◽  
Jin-Hu Dou ◽  
Xiao-Yu Cao ◽  
Jie-Yu Wang ◽  
Jian Pei

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