  Spontaneous emission (SE) rate of any light emitters directly scales with the
locally available modes for photons. The emission rate can be modified, by
changing the dielectric environment of light emitters. Generally cavities with
modes in resonance to light emission frequency, are used to amplify the light
emission rate. The Fermi golden rule predicts that if the cavity modes are
offresonant to the emission frequency, then the SE rate is suppressed. In this
study, we demonstrate that the SE of colloidal alloyed quantum dots is
inhibited by coupling them to chemically synthesized Silver nanowires and
Silver nanoplatelet systems. The silver nanoplatelet and silver nanowire
plasmonic resonance modes are in ultraviolet and infrared regions of the
electromagnetic spectrum. The quantum dots emit in visible region of light.
This off-resonant weak coupling of emitters and cavities results in emission
rate suppression and is quantified by time resolved photoluminescence (TRPL)
measurements. TRPL decay profiles show that the emission rate can be suppressed
by coupling self assembled quantum dot monolayers to a single silver
nanoplatelet and a single silver nanowire respectively.
