doped – TechConnect Briefs

Synthesis of highly-doped silicon and germanium nanoparticles in a low-pressure plasma-reactor for thermoelectric and solar applications

Grimm H., Petermann N., Gupta A., Wiggers H., University of Duisburg-Essen, DE

Microwave-plasma induced thermal decomposition of gaseous precursors like germane (GeH4) and silane (SiH4) is used to synthesize semiconductor nanoparticles for thermoelectric and thermal applications. P and n-doping can be achieved by mixing silane and germane [...]

Exploring the Structure-Function Relationship in Multifunctional Nanoparticles

Casey P.S., Roussow C.R., Boskovic S., Lawrence K.A., Turney T.W., CSIRO (CMIT), AU

Nanoparticles of ZnO are increasingly being used as a pigment and UV absorber in personal care products (e.g. sunscreens), coatings and paints, predominantly because their absorbance efficiency increases with decreasing particle size. However, whilst protection [...]

Controlling the Photoactivity of Nanoparticles

Casey P., Boskovic S., Lawrence K., Turney T., CSIRO(CMIT), AU

The relative photoactivity of a series of nanophase ZnO powders with varying crystallite size (20-140nm) was determined using a chemical method based on the photobleaching behaviour of the stable radical 1,1-diphenyl-2-picrylhydrazyl (DPPH). It was confirmed [...]