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Cited 20 time in webofscience Cited 25 time in scopus
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A novel design of donor-acceptor polymer semiconductors for printed electronics: application to transistors and gas sensors

Authors
Cheon, Hyung JinLi, XinlinJeong, Yong JinSung, Min JaeLi, ZhijunJeon, InhaTang, XiaowuGirma, Henok GetachewKong, HoyoulKwon, Soon-KiAn, Tae KyuKim, Se HyunKim, Yun-Hi
Issue Date
7-Jul-2020
Publisher
ROYAL SOC CHEMISTRY
Citation
JOURNAL OF MATERIALS CHEMISTRY C, v.8, no.25, pp.8410 - 8419
Indexed
SCIE
SCOPUS
Journal Title
JOURNAL OF MATERIALS CHEMISTRY C
Volume
8
Number
25
Start Page
8410
End Page
8419
URI
https://scholarworks.bwise.kr/gnu/handle/sw.gnu/6406
DOI
10.1039/d0tc01341b
ISSN
2050-7526
Abstract
Jet printing of pi-conjugated polymers synthesized through simple solution processes has been considered to be promising for the direct patterning of organic semiconductors on large-area substrates. However, it is still challenging to achieve direct patterns of high-performance polymer semiconductors through electrohydrodynamic jet printing because of the relatively low solubilities of donor-acceptor pi-conjugated polymers which have high charge carrier mobilities and operation stabilities. A novel synthesis is proposed to obtain donor-acceptor pi-conjugated polymer semiconductors suitable for printed electronics while exhibiting high performance of hole transport properties. The backbones and side chains of the donor-acceptor pi-conjugated polymers are fully engineered to (1) achieve balanced jetting conditions and (2) provide time to induce the intermolecular self-assembly during the continuous printing. The printed polymers have similar morphologies and molecular orderings to those of spin-coated semiconductor films, which provide highly uniform electrical performances of organic field-effect transistors (OFETs) with a saturation mobility similar to those of the spin-coated films, up to 3.07 cm(2) V-1 s(-1). Furthermore, these high performances and operational stabilities suggest feasibility of the printed OFETs to be applied to ammonia gas sensors. Our study guides the design of pi-conjugated polymers suitable for large-area printing processes to contribute to printed electronics.
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