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Influence of bank geometry on the electrical characteristics of printed organic field-effect transistors SCIE SCOPUS

Title
Influence of bank geometry on the electrical characteristics of printed organic field-effect transistors
Authors
JO, YOUNGMIN,PARK, HYUNJINAHN, HYUNGJUKIM, YUN HOJUNG, SUNGJUNE
Date Issued
2019-12
Publisher
IOP PUBLISHING LTD
Abstract
The electrical characteristics of organic field-effect transistors (OFETs) based on small-molecule organic semiconductors (OSCs) have been significantly improved by employing various fabrication techniques in solution processes to enhance the OSC crystallinity. However, complicated fabrication and inhomogeneity of OFETs remain as challenges before commercialization. In this work, we have efficiently controlled the size and orientation of 6,13-bis(triisopropylsilylethynyl)-pentacene (TIPS-pentacene) crystalline domains by tuning the Cytop bank dimension, in which OSC inks are printed, to improve the device performance. The optimized bank pattern forms uniform thin film morphology and well-aligned TIPS-pentacene crystalline domains along the charge transport direction, resulting in four-fold increase in field-effect mobility and one third reduction in relative standard deviation.
URI
https://oasis.postech.ac.kr/handle/2014.oak/100353
DOI
10.1088/2058-8585/ab56b7
ISSN
2058-8585
Article Type
Article
Citation
FLEXIBLE AND PRINTED ELECTRONICS, vol. 4, no. 4, page. 042001, 2019-12
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