Enhanced Photoluminescence Property for Quantum Dot-Gold Nanoparticle Hybrid

Manipulating coupling between a single semiconductor quantum dot and single gold nanoparticle.

Using atomic force microscopy nanomanipulation, we position a single Au nanoparticle near a CdSe/ZnS quantum dot to construct a hybrid nanostructure with variable geometry. The coupling between the two particles is varied in a systematic and reversible manner. The photoluminescence lifetime and blinking of the same quantum dot are measured before and after assembly of the structure. In some hyb...

Experimental observation of mode-selective anticrossing in surface-plasmon-coupled metal nanoparticle arrays

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Hybrid Type-I InAs/GaAs and Type-II GaSb/GaAs Quantum Dot Structure with Enhanced Photoluminescence

Gap-Plasmon Enhanced Gold Nanoparticle Photoluminescence

Gap-plasmon-enhanced gold nanoparticle photoluminescence is studied experimentally at the single-particle level. The photoluminescence spectra of gold nanoparticles on an Al2O3-coated gold film under both 532 and 633 nm excitation show a clear peak near the measured gap-plasmon resonance wavelength. Comparing the collected emission spectrum with that from a gold reference film under 633 nm exci...

Surface plasmon enhanced Förster resonance energy transfer between the CdTe quantum dots

Förster resonance energy transfer FRET between CdTe quantum dots QDs at nanoscale proximity to gold nanoparticle Au NP layers is investigated experimentally. We have observed the enhancement in the acceptor QDs’ photoluminescence lifetime intensities. The decrease in donor QDs’ exciton lifetime from 5.74 to 2.06 ns, accompanied by an increase in acceptor QDs’ exciton lifetime from 3.38 to 7.52 ...