  In this work we present how the optical properties of ZnSe nanowires are
modified by the presence of Ag nanoparticles on the sidewalls of the ZnSe
nanowires. In particular we show that the low-temperature luminescence of the
ZnSe nanowires changes its shape, enhancing the phonon-replicas of impurity
related recombination and affecting rise and decay times of the transient
absorption bleaching at room temperatures, with an increase of the former and a
decrease of the latter. In contrast, the deposition of Au NPs on the ZnSe
nanowires does not change the optical properties of the sample. We suggest that
the mechanism underlying these experimental observations is energy transfer via
the Foerster interaction based on the fact that the localized surface plasmon
resonance (LSPR) of Ag nanoparticles spectrally overlaps with absorption and
emission of ZnSe while the Au LSPR does not.

Mesoscale and Nanoscale Physics;Materials Science