Inorganic nanocomposites have emerged as a means of controlling material functionality by morphology and composition to give combinations of properties not generally found in single-phase materials. Although these materials display unique physical properties, a comprehensive understanding of their structure-function relationship is lacking.  We used PbSe-GeS2 nanocmposites as a model system to characterize the molecular structure at the nanocrystal interface and to determine the influence it has on the optoelectronic properties of inorganic nanocomposites. X-Ray photoelectron (XPS) and Near Edge X-Ray absorption (NEXAFS) spectroscopies show evidence of intimate mixing of the two materials at the nanocrystal interface.  Furthermore, unique bonding motifs arise in the inorganic matrix phase upon incorporation into the nanocomposite.  These results suggest a diverse chemical environment that has the potential to be tuned for targeted electronic applications.

Nanocrystal interfaces in modular inorganic nanocomposites

245th National Meeting (2013)

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