Journal ArticleDOI
Electronic Energy Transfer in CdSe Quantum Dot Solids
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TLDR
Electronic energy transfer between close packed quantum dots using cw and time resolved photoluminescence is demonstrated and is consistent with long-range resonance transfer of electronic excitations from the more electronically confined states of the small dots to the higher excitedStates of the large dots.Abstract:
We demonstrate electronic energy transfer between close packed quantum dots using cw and time resolved photoluminescence. Optically clear and thin, close packed quantum dot solids were prepared from mixtures of small and large CdSe quantum dots (38.5 and 62 \AA{}, $\ensuremath{\sigma}l4.5%$). Quenching of the luminescence (lifetime) of the small dots accompanied by enhancement of the luminescence (lifetime) of the large dots is consistent with long-range resonance transfer of electronic excitations from the more electronically confined states of the small dots to the higher excited states of the large dots.read more
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Transparent and fluorescent thin films of polysilane–SiQD nanocomposite: cellulose acetate
TL;DR: In this article, a polysilane-silicon quantum dots nanocomposite (PSiQD) dispersed within cellulose triacetate (CA) was used for free standing thin films.
Journal ArticleDOI
Horizontal versus vertical charge and energy transfer in hybrid assemblies of semiconductor nanoparticles.
TL;DR: An unusual linker-length-dependency in the emission of the donors is found and may be explained by charge and energy transfer processes in the vertical direction from the donors to the acceptors that depend strongly on charge transfer processes occurring in the horizontal plane, namely, parallel to the substrate.
Journal ArticleDOI
Fluorescence properties of self assembled colloidal supraparticles from CdSe/CdS/ZnS nanocrystals
Victor Blondot,Alexandra Bogicevic,Antoine Coste,Christophe Arnold,Stéphanie Buil,Xavier Quélin,Thomas Pons,Nicolas Lequeux,Jean-Pierre Hermier +8 more
Journal ArticleDOI
Nucleation temperature-controlled synthesis and in vitro toxicity evaluation of L-cysteine-capped Mn:ZnS quantum dots for intracellular imaging.
Vivek Pandey,Vivek Pandey,Gajanan Pandey,Vinay Kumar Tripathi,Sapna Yadav,Mohana Krishna Reddy Mudiam,Mohana Krishna Reddy Mudiam +6 more
TL;DR: An attempt has been made to explore the efficacy of L-cysteine as a capping agent for Mn-doped ZnS QD for intracellular imaging and a room temperature nucleation strategy was adopted to prepare non-toxic, water-dispersible and biocompatible Mn:ZnSQDs.
Journal ArticleDOI
Large emission enhancement and emergence of strong coupling with plasmons in nanoassemblies: Role of quantum interactions and finite emitter size
TL;DR: In this article, the authors report large radiative enhancements of quantum dot assemblies with extremely small metal nanoparticles and emitter-particle separations $R$ of a few nanometers, where Purcell effect would lead to either no enhancements or quenching.