Material Nanocomposites photoluminiscent
Luminiscent aerogels emit red light when excited with ultraviolet light. This effect is due to a coat of silicon nanoparticles deposited within the structure of a silica aerogel, through chemical vapour infiltration.

The open pore network of silica aerogels, allowing for easy transport of vapours throughout the entire volume of the material, make the process easier.

The deposits are localized near the exterior surface of the aerogel substrate. Subsequent thermal annealing of the composite induces crystallization of the silicon.
Category Composites, Particulate composites
Similar materials Aerogels
Fluorescent materials
References Lawrence Berkeley National Laboratory
Photo Lawrence Berkeley National Laboratory
Copyright © 1996-2019 Torben Lenau
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