Colloidal Synthesis of Hollow Cobalt Sulfide Nanocrystals

Colloidal synthesis of germanium nanocrystals

In this study, colloidal germanium nanocrystals were synthesized by a simple and novel method, and their optical properties were also studied. Polyvinyl alcohol (PVA) as a surface modifier was used to control the optical properties of colloidal Ge nanocrystals. Fourier transform infrared spectroscopy (FTIR) analysis was performed to identify the various functional groups present in the sample. ...

Controlled self-assembly of colloidal cobalt nanocrystals

Spherical cobalt particles are synthesized by injecting stock solution (0.54 g Co2(CO)8 dissolved in 3ml 1,2-dichlorobenzene) into refluxing 1,2-dichlorobenzene at 182 C in the presence of 0.2ml oleic acid and 0.1 g TOPO. Disks are prepared in a similar manner except 0.34 g linear amines are substituted for TOPO. We are developing a precipitation technique that is a variation of the solvent–non...

Colloidal synthesis of nanocrystals and nanocrystal superlattices

This paper provides an overview of the synthetic techniques used to prepare colloidal nanocrystals (NCs) of controlled composition, size, shape, and internal structure and the methods for manipulation of these materials into ordered NC assemblies (superlattices). High-temperature solution-phase synthesis (100–300°C) is followed by size-selective separation techniques in the preparation of monod...

Colloidal Hybrid Nanocrystals: Synthesis, Properties, and Perspectives

Synthesis and photovoltaic application of copper(I) sulfide nanocrystals.

We present the rational synthesis of colloidal copper(I) sulfide nanocrystals and demonstrate their application as an active light absorbing component in combination with CdS nanorods to make a solution-processed solar cell with 1.6% power conversion efficiency on both conventional glass substrates and flexible plastic substrates with stability over a 4 month testing period.