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Stable Scaffolds for Reacting Si Nanowires with Further Organic Functionalities while Preserving Si-C Passivation of Surface Sites
Functionalization of Si NWs with CH3sCHdCHs groups gives nearly full coverage of the Si atop sites. The resulting Si NWs provide high stability against oxidations and, at the same time, reactive functionality...
PublikationenNanopatterned Carbon Films with Engineered Morphology by Direct Carbonization of UV-Stabilized Block Copolymer Films
Nanopatterned thin carbon films were prepared by direct and expeditious carbonization of the block copolymer polystyrene-block-poly(2-vinylpyridine) (PS-b-P2VP) without the necessity of slow heating to...
PublikationenSilicon nanowire-based solar cells
The fabrication of silicon nanowire-based solar cells on silicon wafers and on ulticrystalline silicon thin films on glass is described. The nanowires show a strong broadband optical absorption, which...
PublikationenFormation of nanovoids/microcracks in high dose hydrogen implanted AlN
Aluminium nitride (AlN) epitaxial layers grown on sapphire were implanted with 100 keV hydrogen, H2 + ions with doses in the range of 5 × 1016 cm–2 to 2.5 × 1017 cm-2 and subsequently annealed at temperatures...
PublikationenNanowires Enabling Signal-Enhanced Nanoscale Raman Spectroscopy
Silicon nanowires grown by the vapor–liquid–solid (VLS) mechanism catalyzed by gold show gold caps (droplets) approximately 20–500 nm in diameter with a half spherical towards almost spherical shape....
PublikationenChemical Passivation of Silicon Nanowires with C1-C6 Alkyl Chains through Covalent Si-C Bonds
We report on the functionalization of Si NWs with C1-C6 alkyl chains using a versatile two step chlorination/alkylation process. We show that Si NWs terminated with C1-C6 molecules, through Si-C bonds,...
PublikationenTwo Channel Microfluidic CARS for Quantifying Pure Vibrational Contrast of Model Analytes
We discuss the combination of a CARS-imaging system with microfluidics. Such system is a versatile tool to quantify the relative contributions of resonant and non-resonant scattering at the CARS frequency....
PublikationenBiomedical imaging by means of linear and non-linear Raman microspectroscopy
Biomedical imaging by means of nonlinear Raman microspectroscopy offers novel approaches towards individualized decisions on therapy routines as diagnosis is possible on the chemical composition of tissue...
PublikationenPhoto-induced processes in new materials for electro-optical applications
We present a spectroscopic study of the photoinduced excited-state processes in new materials for polymer solar cells and organic-light emitting diodes, which are based on extended conjugated terpyridine...
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