Journal
GREEN CHEMISTRY
Volume 15, Issue 6, Pages 1473-1476Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c3gc40388b
Keywords
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Funding
- Austrian Science Funds (FWF) within the Wittgenstein award
- ERC
- City of Linz
- Land Oberosterreich
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Biocompatible and sustainable electronic-grade materials are integral for the development of electronics for biointegration and 'use-and-throw' applications. Herein we report the use of the natural resin shellac in organic field-effect transistors. Shellac was employed to cast robust and smooth substrates suitable for durable transistor devices. In addition shellac displays excellent insulating properties enabling its use as a high-quality dielectric layer for organic field-effect transistor (OFET) devices. We demonstrate that two common organic semiconductors, pentacene and C-60, show hysteresis-free operation in OFETs that employ shellac both as the substrate and as dielectric material. Shellac is a fully biocompatible (even edible) material that offers many advantages for OFET fabrication, including high dielectric breakdown fields, simple solution processing from ethanol solutions, and low temperature crosslinking at 50-70 degrees C. This work shows that shellac as a biomaterial can enable OFET applications where biocompatibility is necessary.
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