The semiconductor properties of silicon can result in fluorescence. Hydrogen-capped Si nanoparticles with sizes from 1-3 nm are highly fluorescent and exceed the brightness of dyes. The reference article shows that by increasing the particle size, the bandgap decreases and therefore allows to tune light absorption and emission. Particle sizes of 1.0, 1.67, 2.15, 2.9 and 3.7 emit light in the UV, blue, green, yellow and red.

Basic data

NameSilicon (Si)
Configuration3s2 3p2
Magnetic typeDiamagnetic
Melting point1414 ℃
Boiling point3265 ℃

Key trends at the nanoscale


The pie chart presented here is based on the distribution of research literature across various fields of application research over the period 1992 to 2017. The value listed is the number of papers discussing Silicon related to nanoparticles, sorted by application field. This gives an indication which applications are being or have been researched and where the core interest is. However, the distribution does not correct for the total publications in a given application field. So, a high score for a given application field indicates there is considerable interest in the element in that field, but it may also mean the field itself has considerable more publications than other fields. Therefore, the pie chart gives a general overview only. The application fields themselves are discussed in more detail on our Nanoparticles page.

Additionally, the total number of publications provides some insight in the amount of research into Silicon used in nanoparticles in general. Typically, a well-researched element will show 1000 or more publications over the 1992-2017 period.

Alloys and composites

The graph below presents an analysis of literature on core-shell, alloy and composite particles with silicon as a component of such nanoparticles. It shows possible combinations for alloy or composite nanoparticles and reflects research interest during the 1992-2017 period.