Switching-on quantum size effects in silicon nanocrystals.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 25472530.
- Also identified by DOI 10.1002/adma.201403552.
- No licence information is recorded for this record.
- Because redistribution is not established, this page shows the abstract only. Follow the links below for the full text.
Abstract
The size-dependence of the absolute luminescence quantum yield of size-separated silicon nanocrystals reveals a "volcano" behavior, which switches on around 5 nm, peaks at near 3.7-3.9 nm, and decreases thereafter. These three regions respectively define: i) the transition from bulk to strongly quantum confined emissive silicon, ii) increasing confinement enhancing radiative recombination, and iii) increasing contributions favoring non-radiative recombination.
Medical subject headings
- Nanoparticles
- Silicon