Surface Plasmon-Enhanced Luminescence of Silicon Quantum Dots in Gold Nanoparticle Composites

Abstract

Figure S1. (a), (b) TEM images of Au-NPs/Si-QDs. Si-QDs are grown at 1200 o C.

Optically coupled gold nanostructures: plasmon enhanced luminescence from gold nanorod-nanocluster hybrids

“…In many cases, an optimal distance of approximately 10-12 nm was previously found for various NIR-emitting fluorophores. 48,60,61 Based on this, we prepared two AuNR samples with a silica thickness of ≈5 and ≈12 nm (see Fig. S1 in ESI † for complete histograms of the dimensions of the prepared bare AuNRs and silica coated Au@SiO 2 NRs).…”

“…Five days after radiolabeling, gamma spectra of the 198 Au radiolabeled samples collected in the experiment were acquired using a coaxial HPGe detector with a relative efficiency of 78% and full width at half maximum of 1.8 keV for 1332.5 keV photons of 60 Co, connected to a modular gamma-spectrometric system controlled by the Genie 2000 v. 3.3 software (all components and software by Canberra, Meriden, CT, USA). The individual samples (0.700 or 1.400 mL aliquots) in Eppendorf® microcentrifuge tubes were placed (cap down) directly onto the detector top.…”

Surface Plasmon-Enhanced Luminescence of CdSe/CdS Quantum Dots Film Based on Au Nanoshell Arrays

“…For example, some works mainly focused on enhancing the luminous efficiency of QDs in solution environments by means of the interaction between Au/Ag nanoparticles and QDs [8,9,10,11]. In addition, some scholars focused on improving the luminous efficiency of QDs film based on metal nanostructure arrays [12,13,14,15,16,17,18,19,20,21]. However, luminous properties of core-shell CdSe/CdS QDs film based on metal nanostructure arrays have been little investigated.…”

Enhanced Electroluminescence from Silicon Quantum Dots Embedded in Silicon Nitride Thin Films Coupled with Gold Nanoparticles in Light Emitting Devices

“…All these works also shared the proposal that the PL enhancement was due to effects of localized surface plasmon resonance (LSPR) [ 16 , 17 , 18 , 20 ]. Therefore, they have motivated the development of other plasmonic coupled systems with enhanced PL, such as core-shell-type SiQDs-based nanocomposites consisting of a Au nanoparticle (NP) core and a thick shell of SiQDs agglomerates [ 21 ], a structure where SiQDs are placed in a gap between a gold thin film and an Au nanoparticle [ 22 ]. Or finally, a structure composed of a monolayer of luminescent SiQDs and a silver (Ag) film over nanosphere (AgFON) plasmonic structure, separated with a polymer spacer [ 23 ].…”