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Title: High- κ polymers of intrinsic microporosity: a new class of high temperature and low loss dielectrics for printed electronics

Journal Article · · Materials Horizons
DOI:https://doi.org/10.1039/C9MH01261C· OSTI ID:1616434

High performance polymer dielectrics are a key component for printed electronics. In this work, organo-soluble polymers of intrinsic microporosity (PIMs) are reported for the first time to demonstrate desirable dielectric properties with a high permittivity (or κ), heat resistance, and low dielectric loss simultaneously. Due to the highly dipolar sulfonyl side groups (4.5 D) and rigid contorted polymer backbone, a sulfonylated PIM (SO2-PIM) enabled friction-free rotation of sulfonyl dipoles in the nanopores. As such, an optimal balance between relatively high κ and low dielectric loss is achieved in a broad temperature window (-50–200 °C). For example, the discharged energy density reached 17 J cm-3 with κ = 6.0. The discharge efficiency was 94% at 150 °C/300 MV m-1 and 88% at 200 °C/200 MV m-1. Furthermore, its application as a high-κ gate dielectric in field effect transistors (FETs) is demonstrated. With the bilayer SO2-PIM/SiO2 gate dielectric, InSe FETs exhibited a high electron mobility in the range of 200–400 cm2 V-1 s-1, as compared to 40 cm2 V-1 s-1 for the bare SiO2-gated InSe FET. This study indicates that highly dipolar PIMs with a rigid polymer backbone and large free volume are promising as next generation gate dielectric materials for printed electronics.

Research Organization:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
SC0012704
OSTI ID:
1616434
Alternate ID(s):
OSTI ID: 1574039
Report Number(s):
BNL-213872-2020-JAAM; MHAOAL
Journal Information:
Materials Horizons, Vol. 7, Issue 2; ISSN 2051-6347
Publisher:
Royal Society of ChemistryCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 73 works
Citation information provided by
Web of Science

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