Horizontal versus vertical charge and energy transfer in hybrid assemblies of semiconductor nanoparticles

• Main Authors: Gilad Gotesman, Rahamim Guliamov, Ron Naaman
• Format: Article
• Language: English
• Published: Beilstein-Institut 2012-09-01
• Series: Beilstein Journal of Nanotechnology
• Subjects: charge transfer; energy transfer; nanoparticles; organic linker; quantum dots
• Online Access: https://doi.org/10.3762/bjnano.3.72

We studied the photoluminescence and time-resolved photoluminescence from self-assembled bilayers of donor and acceptor nanoparticles (NPs) adsorbed on a quartz substrate through organic linkers. Charge and energy transfer processes within the assemblies were investigated as a function of the length of the dithiolated linker (DT) between the donors and acceptors. We found an unusual linker-length-dependency in the emission of the donors. This dependency 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 (within the monolayer of the acceptor), namely, parallel to the substrate.