Journal
CARBON
Volume 176, Issue -, Pages 500-510Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.carbon.2021.01.145
Keywords
Carbonization; Laser-carbonization; N-doped carbon; Carbon laser patterning; WAXS; Wide-angle X-ray scattering
Funding
- Fonds der Chemischen Industrie
- Max Planck Society
- DFG
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Despite centuries-old experience in carbonizing materials, new lessons can still be learned and new applications can be found for carbonized materials. Laser-carbonization offers a method for patterning eco-friendly and potentially biodegradable electronic materials for future applications in flexible electronics.
Even after centuries-old experience in carbonizing materials we can still learn new lessons and find new applications for carbonized materials. In the past decades, laser-assisted syntheses of materials have emerged as versatile tools for the fabrication of micro- and nanostructured functional devices. In this regard, laser-carbonization is of particular interest, as it provides a method for patterning eco-friendly and potentially biodegradable electronic materials for future applications in comparison to the state-of-the-art in flexible electronics. However, using molecular precursors for laser-carbonization has been a challenge for many years. We identified a set of three different precursors and conducted an in-depth morphological and compositional study to understand how molecular precursors must be prepared for the high-speed carbonization reactions used in laser-patterning. The resulting laser-patterned carbons (LP-C) or N-doped carbons (LP-NC) are different from their conventionally pyrolyzed reference products mostly in terms of morphology. A generally porous structure and a carbonization gradient induced by the top-to-bottom energy input are the most remarkable features. Additionally, the microstructure, the elemental composition and the resulting electronic properties are different as demonstrated by X-ray photoelectron spectroscopy (XPS) and wide-angle X-ray scattering (WAXS) analysis. (C) 2021 Elsevier Ltd. All rights reserved.
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