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Shin, Tae Joo
UNIST Synchrotron Radiation Research Laboratory
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  • Synchrotron Radiation Application Researches

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Orientation control of semiconducting polymers using microchannel molds

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Title
Orientation control of semiconducting polymers using microchannel molds
Author
Han, Moon JongKim, JunkyuKim, BomiPark, Soon MoAhn, HyungjuShin, Tae JooKim, BongSooKim, HyoungsooYoon, Dong Ki
Issue Date
2020-10
Publisher
AMER CHEMICAL SOC
Citation
ACS NANO, v.14, no.10, pp.12951 - 12961
Abstract
The molecular orientation of organic semiconductors (OSCs) is of fundamental importance to anisotropic electrical behavior as well as superior properties in practical applications. Here, a simple and effective method is demonstrated to fabricate highly oriented semiconducting polymers, poly(3-hexylthiophene) (P3HT) and poly{[N,N'-bis (2-octyldodecyl)-1,4, 5,8-naphthalenediimide-2,6-diyl]-alt-5,5'-(2,2'-bithiophene)} (P(NDI2OD-T2)), by mass transfer effect under microchannel molds by diffusion and convection. Furthermore, parallel or perpendicular molecular arrangements relative Ito the channel direction were achieved by varying lthe widths of the microchannels, which are directly observed using polarized optical microscopy and twodimensional grazing-incidence-'X-ray diffraction experiments. The method could enable the fabrication of organic field-effect transistors that exhibit anisotropic electrical properties indicating inter- or intrachain charge transport. The resulting platform will provide a simple approach for multidirectional orientations of anisotropic OSCs.
URI
https://scholarworks.unist.ac.kr/handle/201301/48864
URL
https://pubs.acs.org/doi/10.1021/acsnano.0c04138
DOI
10.1021/acsnano.0c04138
ISSN
1936-0851
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