Abstract
Fluorescence and Raman spectroscopy are powerful techniques to probe the intrinsic properties of low dimensional materials such as carbon nanotubes and graphene. In this study, we present how a hyperspectral imaging platform based on Bragg gratings designed for global imaging can help improve the fabrication methods of various nanomaterials. Spectrally and spatially resolved maps were acquired on different samples over a million points. The intrinsic specificity of Raman scattering combined with the analysis performed by the global imaging modality makes it a useful method to assess large maps (hundreds of microns) of the spatial distribution of defects, number of layers and stacking order. On the other hand, hyperspectral photoluminescence provides straightforward information on photostability and allows multiplexing. This presentation will highlight how hyperspectral microscopy can be used to study carbon nanotubes based fluorophores, CVD graphene and MoS2.
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