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Mapping the heterogeneity of charge carriers in nanocrystals

Direct mapping of charge carrier heterogeneity in Bi2Se3 nanocrystals

Nano-FTIR spectroscopy and IR nano-imaging neaSCOPE systems are ideal tools for studying the density of electric charge carriers at the nanoscale, and in addition to qualitative analysis, they also enable their quantitative determination in topological insulators and other quantum materials.

Nanocrystal charge carrier distribution mapping

IR nanoscopy and nano-FTIR spectroscopy of polyol-synthesized Bi2Se3 and Sb2Te3 nanocrystals can detect local changes in charge carrier concentration with much greater sensitivity than other commonly used methods. The observed inhomogeneities shown in the figure are attributed to the formation of internal defects during the synthesis of the material. IR nano-imaging and infrared nanoscopy thus provide a unique way to optimize the production of nanomaterials with specific properties.

You can find out more about this and other applications here.

IR-neaSCOPE+fs is designed for pump-probe spectroscopy with 10fs temporal and 10nm spatial resolution: it enables ultra-fast nanoscale science.
IR-neaSCOPE+s enables IR imaging and nano-FTIR spectroscopy by detecting radiation reflected from a standard AFM tip. It is a universal solution for all types of materials. It measures both absorbed and reflected radiation simultaneously and uses the fastest and most reliable modules for nano-imaging and nano-spectroscopy.
IR-neaSCOPE+TERs is a revolution in nano-spectroscopy thanks to a combination of nano-FTIR and Raman spectroscopy techniques, providing complete spectral analysis.
cryo-neaSCOPE+xs is a pioneering instrument for nanoscale optical imaging and spectroscopy in an extreme cryogenic environment.

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