Solution-Processed, Photo-Patternable Fluorinated Sol-Gel Hybrid Materials as a Bio-Fluidic Barrier for Flexible Electronic Systems

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Reports have recently been published on ultrathin biofluid barriers, which enable the long-term measurement of biological signals and exhibit conformability on nonlinear surfaces such as skin and organs. However, inorganic- and organic-based barriers have process incompatibility and high water permeability, respectively. Siloxane- (inorganic) based fluorinated epoxy (organic) hybrid materials (FEH) are demonstrated for bio-fluidic barrier and the biocompatibility and barrier performance for flexible electronic systems as solution-processed oxide thin-film transistors (TFTs) on 1.2 mu m thick polyimide (PI) thin film substrate is confirmed. FEH thin film can be patterned as small as 10 mu m through conventional photolithography. The fabricated solution-processed indium oxide TFTs with FEH barriers exhibit durable performance over 16 h with no dramatic change of transfer characteristics in phosphate-buffered saline (PBS) environment. Furthermore, to realize FEH barriers for flexible systems, the solution-processed indium oxide TFTs with FEH barriers on ultrathin PI substrate are demonstrated subjected to compression test and successfully measure the electrical properties with no irreversible degradation during 1000 cycles of mechanical testing in PBS.
Publisher
WILEY
Issue Date
2020-03
Language
English
Article Type
Article
Citation

ADVANCED ELECTRONIC MATERIALS, v.6, no.3, pp.1901065

ISSN
2199-160X
DOI
10.1002/aelm.201901065
URI
http://hdl.handle.net/10203/276754
Appears in Collection
MS-Journal Papers(저널논문)
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