Nozzle-Free Printing of CNT Electronics Using Laser-Generated Focused Ultrasound.

Autor: Seva S; Electrical and Computer Engineering, Boise State University, 1910 W University Drive, Boise, ID, 83725, USA., Rorem B; Applied Physics, University of Michigan, Ann Arbor, MI, 48109, USA., Chinnathambi K; Micron School of Materials Science and Engineering, Boise State University, 1910 W University Drive, Boise, ID, 83725, USA., Estrada D; Micron School of Materials Science and Engineering, Boise State University, 1910 W University Drive, Boise, ID, 83725, USA.; Center for Advanced Energy Studies, Idaho National Laboratory, Idaho Falls, ID, 83415, USA., Guo LJ; Applied Physics, University of Michigan, Ann Arbor, MI, 48109, USA.; Department of Electrical Engineering and Computer Science, University of Michigan, Ann Arbor, MI, 48109, USA., Subbaraman H; School of Electrical Engineering and Computer Science, Oregon State University, 110 SW Park Terrace Pl, Corvallis, OR, 97331, USA.
Jazyk: angličtina
Zdroj: Small methods [Small Methods] 2024 Oct; Vol. 8 (10), pp. e2301596. Date of Electronic Publication: 2024 Mar 12.
DOI: 10.1002/smtd.202301596
Abstrakt: Printed electronics have made remarkable progress in recent years and inkjet printing (IJP) has emerged as one of the leading methods for fabricating printed electronic devices. However, challenges such as nozzle clogging, and strict ink formulation constraints have limited their widespread use. To address this issue, a novel nozzle-free printing technology is explored, which is enabled by laser-generated focused ultrasound, as a potential alternative printing modality called Shock-wave Jet Printing (SJP). Specifically, the performance of SJP-printed and IJP-printed bottom-gated carbon nanotube (CNT) thin film transistors (TFTs) is compared. While IJP required ten print passes to achieve fully functional devices with channel dimensions ranging from tens to hundreds of micrometers, SJP achieved comparable performance with just a single pass. For optimized devices, SJP demonstrated six times higher maximum mobility than IJP-printed devices. Furthermore, the advantages of nozzle-free printing are evident, as SJP successfully printed stored and unsonicated inks, delivering moderate electrical performance, whereas IJP suffered from nozzle clogging due to CNT agglomeration. Moreover, SJP can print significantly longer CNTs, spanning the entire range of tube lengths of commercially available CNT ink. The findings from this study contribute to the advancement of nanomaterial printing, ink formulation, and the development of cost-effective printable electronics.
(© 2024 The Authors. Small Methods published by Wiley‐VCH GmbH.)
Databáze: MEDLINE
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