Phase transitions have been investigated for silver deposition onto In2S3
precursor layers by spray chemical vapor deposition from a trimethylphosphine
(hexafluoroacetylacetonato) silver (Ag(hfacac)(PMe3)) solution. The formation
of Ag nanoparticles (Ag NPs) on top of the semiconductor layer set on
concomitant with the formation of AgIn5S8. The increase of the diameter of Ag
NPs was accompanied by the evolution of orthorhombic AgInS2. The formation of
Ag2S at the interface between Ag NPs and the semiconductor layer was observed.
Surface photovoltage spectroscopy indicated charge separation and electronic
transitions in the ranges of corresponding band gaps. The phase transition
approach is aimed to be applied for the formation of plasmonic nanostructures
on top of extremely thin semiconducting layers.