: Fakultät für Elektrotechnik und Informationstechnik: Professur Materialsysteme der Nanoelektronik
Materialsysteme der Nanoelektronik
Active and passive rolled-up electronic devices
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Rolled-up nanomembranes as compact 3D architectures for field effect transistors and fluidic sensing applicationsWe fabricate inorganic thin film transistors with bending radii of less than 5μm maintaining their high electronic performance with on-off ratios of more than 100000 and subthreshold swings of 160mV/dec. The fabrication technology relies on the roll-up of highly strained semiconducting nanomembranes, which compacts planar transistors into three-dimensional tubular architectures opening intriguing potential for microfluidic applications. Our technique probes the ultimate limit for the bending radius of high performance thin film transistors.D. Grimm et al., Nano Lett. 13 (1), 213–218 (2013) DOI: 10.1021/nl303887b, Publication Date (Web): 17 Dec 2012, URL PDF
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Animation of 3D rolled-up field effect transistor (D. Grimm) |
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Self-wound ultra-compact energy storage elementsWe have demonstrated the self-assembly of ultra-compact energy storage devices based on self-wound three-dimensional hybrid organic/inorganic nanomembranes. Such ultra-compact elements exhibit capacitances per footprint area higher than their state-of-the-art planar counterparts and reach specific energies comparable to supercapacitors. The combination of self-assembled organic monolayers with inorganic capacitor materials leads to elements with small footprints, remarkable performance and properties strongly correlated with the organic materials incorporated. Our results represent a breakthrough for local on-chip energy storage and energy supply for autonomous systems at the micro- and nanoscale.C. C. Bof Bufon et al., Nano Lett. 10, 2506 (2010) URL PDF
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