Several chemical routes to CdSe/CdS core-shell nanocrystals (NCs) with each of them leading to different shape of nanocrystals were developed. Also a simple chemical method for growing Au domains onto CdS nanorods and CdSe/CdS NCs in oleylamine was developed. The size of Au NCs can be precisely tuned by adjusting the temperature of the reaction mixture, while the shape of Au/CdS nano-composites (matchstick or barbells) is controllable via the reaction rate. All of the aforementioned nanocomposites had semiconductor emission quenched and further study is necessary to determine whether a significantly wider band gap shell material can prevent fast transfer of excited carriers from semiconductor into metal domains.

Optoelectronic properties of metal-semiconductor nanocomposites   in strongly coupled regime

243rd National Meeting (2012)

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