Stability of CdS nanocrystals in glass - art. no. 155417

We have measured and analyzed optical and x-ray-absorption spectra of CdS n anocrystals grown by solid-state reaction in a borosilicate glass, with ave rage crystallite radii from 1.4 to 5 nm. The first (Cd-S) and second (Cd-Cd ) neighbor distances are within 0.2% of the bulk values in all cases. We es tablish an upper bound for the interfacial tension of 0.15 N/m. Such low in terface tension suggests that glass-embedded nanocrystals are inherently qu ite stable.