Stability of silicon-tin alloyed nanocrystals with high tin concentration synthesized by femtosecond laser plasma in liquid media.

ABSTRACT: Nanocrystals have a great potential for future materials with tunable bandgap, due to their optical properties that are related with the material used, their sizes and their surface termination. Here, we concentrate on the silicon-tin alloy for photovoltaic applications due to their bandgap, lower than bulk Si, and also the possibility to activate direct band to band transition for high tin concentration. We synthesized silicon-tin alloy nanocrystals (SiSn-NCs) with diameter of about 2-3 nm by confined plasma technique employing a femtosecond laser irradiation on amorphous silicon-tin substrate submerged in liquid media. The tin concentration is estimated to be [Formula: see text], being the highest Sn concentration for SiSn-NCs reported so far. Our SiSn-NCs have a well-defined zinc-blend

SUBMITTER: Lozac'h M 

PROVIDER: S-EPMC10192323 | biostudies-literature | 2023 May

REPOSITORIES: biostudies-literature