TY - JOUR
T1 - Mitigating Meniscus Instabilities in Solution-Sheared Polymer Films for Organic Field-Effect Transistors
AU - Teixeira Da Rocha, Cecilia
AU - Qu, Ge
AU - Yang, Xuegeng
AU - Shivhare, Rishi
AU - Hambsch, Mike
AU - Diao, Ying
AU - Mannsfeld, Stefan C.B.
N1 - Publisher Copyright:
Copyright © 2019 American Chemical Society.
PY - 2019/8/21
Y1 - 2019/8/21
N2 - Semiconducting donor-acceptor copolymers are considered to be a promising material class for solution-coated, large-scale organic electronic applications. A large number of works have shown that the best-performing organic field-effect transistors (OFETs) are obtained on low-surface-energy substrates. The meniscus instabilities that occur when coating on such surfaces considerably limit the effective deposition speeds. This represents a limiting factor for the upscaling of device fabrication for mass production, an issue that needs to be addressed if organic electronic devices are ever to become commercially relevant. In this work, we present a method to increase the accessible window of coating speeds for the solution shearing of donor-acceptor semiconductor polymers for the fabrication of OFETs. By incorporating a piezo crystal that is capable of producing high-frequency vibrations into the coating head, we are able to mitigate contact line instabilities due to the depinning of the contact line, thereby suppressing the commonly encountered "stick-and-slip" phenomenon.
AB - Semiconducting donor-acceptor copolymers are considered to be a promising material class for solution-coated, large-scale organic electronic applications. A large number of works have shown that the best-performing organic field-effect transistors (OFETs) are obtained on low-surface-energy substrates. The meniscus instabilities that occur when coating on such surfaces considerably limit the effective deposition speeds. This represents a limiting factor for the upscaling of device fabrication for mass production, an issue that needs to be addressed if organic electronic devices are ever to become commercially relevant. In this work, we present a method to increase the accessible window of coating speeds for the solution shearing of donor-acceptor semiconductor polymers for the fabrication of OFETs. By incorporating a piezo crystal that is capable of producing high-frequency vibrations into the coating head, we are able to mitigate contact line instabilities due to the depinning of the contact line, thereby suppressing the commonly encountered "stick-and-slip" phenomenon.
KW - large-area fabrication
KW - meniscus instabilities
KW - organic field-effect transistors
KW - solution shearing
KW - vibration
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U2 - 10.1021/acsami.9b07832
DO - 10.1021/acsami.9b07832
M3 - Article
C2 - 31403762
AN - SCOPUS:85071702867
SN - 1944-8244
VL - 11
SP - 30079
EP - 30088
JO - ACS Applied Materials and Interfaces
JF - ACS Applied Materials and Interfaces
IS - 33
ER -