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Gold nanosponges are gold/air percolated nanoparticles with three dimensionally intertwined gold and air filaments of sub-20 nm diameter. The internal structure of the nanosponges, i.e. the size of the gold and air filaments can be tuned by varying the fabrication parameters [1]. Gold nanosponges exhibit multiple scattering resonances in the visible to NIR spectral range. Using dark field optical...
Here we report on promising strategies for photon management in organic optolectronic devices. Multilayered hybrid plasmonic nanostars are used to boost the performance of organic light-emitting diodes (OLEDs). We designed and synthesized silver-enhanced gold nanostars coated with a very thin silica layer (∼10 nm), so that the hot-spots at the tips of the nanostars remain easily accessible, while...
Optical properties of black silicon (b-Si) can be tailored to minimize reflection losses to less than 0.6 % between 300–1000 nm and to improve the absorption at the silicon band-edge by light-trapping. Recently, metal assisted wet-chemically etched (MACE) b-Si was exploited to fabricate high efficiency (18.2 %) solar cells with surface passivation by thermal SiO2 and recombination velocities (SRV)...
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