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TitlePolymer-silicon nanosheet composites: bridging the way to optoelectronic applications
AuthorAlina Lyuleeva1, Tobias Helbich2, Bernhard Rieger2 and Paolo Lugli1
Affiliation(s)1 Institute for Nanoelectronics, Technical University of Munich (TUM), Theresienstraße 90, 80333 Munich, Germany 2 Catalysis Research Center/Wacker-Lehrstuhl für Makromolekulare Chemie, TUM, Lichtenbergstraße 4, 85747 Garching bei München, Germany
PublishedJournal of Physics D: Applied Physics Volume 50, Number 13 2 March 2017
Keyword 
SnippetPL spectra were collected with an Avantes AVA-Spec 2048 using a Prizmatrix (LED current controller) as light source.
AbstractThe fabrication of electronic devices from sensitive, functional, two-dimensional (2D) nanomaterials with anisotropic structural properties has attracted much attention. Many theoretical and experimental studies have been performed; however, such materials have not been used in applications. In this context, the focus has shifted toward the study and synthesis of new materials. Freestanding hydrogen-terminated silicon nanosheets (SiNSs) are a new class of material with outstanding (opto)electronic properties (e.g. photoluminescence at approximately 510 nm) (Nakano 2014 J. Ceram. Soc. Japan 122 748). SiNSs are promising candidates for use in nanoelectronic devices and flexible electronics. Additional reasons for interest in such nanomaterials are their structural anisotropy and the fact that they are made from silicon. Here, we present examples for the application of functionalized SiNS-based composites as active materials for photonic sensors. The implementation of SiNSs in a covalent nanocomposite not only improves their stability but also facilitates subsequent device fabrication. Thus, SiNSs can be used in a straightforward setup preparation procedure. We show that the modification of novel Si-based 2D nanosheets with selected organic components not only opens a new field of photosensitive applications but also improves the processability of these nanosheets (Niu et al 2014 Sci. Rep. 4 4810, Chimene et al 2015 Adv. Mater. 27 7261)

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