In our lab we are developing new strategies for the bottom-up approach for preparing semiconductor nanocrystals and nanostructures with tailored properties. We focus on the basic knowledge and parametrs for the nanocrystal growth for the development of new heterstructures with a special care on crystal structure, surface and interface chemistry and growth rates.

Novel NCs with Supirior Optical Properties:

We focus on the growth of novel nanocrystals suitable for display and optoelectronic applications. Recent developements include  core/shell nanocrystals and seeded nanorods exhibiting high emission quantum yield and seeded nanorod with high light polarization ability (Nano Lett 2017). Our lab invests a significant effort for the preparation of Cd free CQDs. For the sake of biological and photocatalytic applications, heavy metal free nanoparticles are highly demanded. Among the heavy metal free system, a special focus is given on the Zinc chalchogenide nanoparticles for their promising optoelectronic and photocatalytic activity (Read our recent review on anisotrpoic Zn-Chalcogenide). Recently we developed ZnSe/ZnTe nanodumbells with tunable type-II behavior and ZnSe/ZnS type-I nanorods and quantum dots with strain controlled shell morphology (ACS Nano 2017 ; Nano Lett. 2020)

 

 

 

 

 

 

 

 

 

Development of multi-component hybrid nanocrystals:

Semiconductor–metal hybrid nanoparticles manifest combined and often synergistic properties exceeding the functionality of the individual components, thereby opening up interesting opportunities for controlling their properties through the direct manipulation of their unique semiconductor–metal interface. With bottom-up collidal approach, we synthesize hybrid metal-semiconductor nanocrystals with tunable metal domain on demand for the physical applications.