Emission dynamics of hybrid plasmonic gold/organic GaN nanorods.
作者： F Mohammadi , H Schmitzer , G Kunert , D Hommel , J Ge
关键词: Exciton 、 Wurtzite crystal structure 、 Optoelectronics 、 Layer (electronics) 、 Plasmon 、 Luminescence 、 Molecular beam epitaxy 、 Nanorod 、 Photoluminescence 、 Materials science
摘要: We studied the emission of bare and aluminum quinoline (Alq3)/gold coated wurtzite GaN nanorods by temperature- intensity-dependent time-integrated time-resolved photoluminescence (PL). The ∼1.5 μm length ∼250 nm diameter were grown plasma-assisted molecular beam epitaxy. Gold/Alq3 synthesized organic deposition. near band-edge donor-acceptor pair luminescence was investigated in compared with multilevel model calculations providing dynamical parameters for electron-hole pairs, excitons, impurity bound donors acceptors. Subsequently, influence a 10 gold coating without an Alq3 spacer layer experimental results analyzed model. Without layer, significant PL quenching lifetime reduction is found. behavior attributed to surface band-bending Forster energy transfer from excitons plasmons layer. Inserting 5 reduces which consistent reduced transfer. Increasing 30 lifetimes are similar uncoated structures, showing significantly decreased on excitonic dynamics.
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