The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Plasmonic and nanophotonic structures enable the manipulation and molding of light in nanoscale devices. These nanostructures are designed and integrated to achieve broadband photocurrent enhancement in ultrathin film photovoltaics.
We propose a planar ultra-thin absorber concept exploiting plasmonic resonance absorption enhancement. We calculate >13-fold enhancement in a 7.5 nm thin-film absorber yielding a maximum absorption of 74.4%. Broadband and wide-angle absorption is demonstrated.
III–V semiconductors like GaAs and InGaN are very promising candidates for solar cells. While GaAs has near-ideal bandgap to reach the maximum possible efficiency limit for single junction solar cells, InGaN provides the ability to tune the bandgap of absorbing layers over a wide energy range. Since III–V semiconductors are mostly direct bandgap semiconductors, they are also very strong absorbers...
We analytically determine the contribution of plasmonic nanospheres embedded in absorbing media to total optical absorption. We estimate gains of ∼30% for a 1 µm µc-Si solar cell using 54 nm silica-coated silver nanoparticles.
The addition of a tiny amount of Aluminum nanoparticles in dye solutions is shown to yield a significant enhancement of the down conversion of ultraviolet light while maintaining a high transparency at visible wavelengths.
Plasmonic nanostructures can increase photon capture and lead to enhancement of photocurrent in photovoltaic (PV) cells. This has special implications for Si absorber layers much thinner than 10 µm, when optical absorption of near-bandgap light is reduced and current light trapping schemes, such as surface texturing, may be a poor candidate. There has been an increasing amount of work in the field...
A plasmon waveguide resonance biosensor is designed and optimized for bulk index sensing using a genetic algorithm. The optimized biosensor has a large combined sensitivity factor (4116 RIU−1) and penetration depth (7.2µm) for TM polarization.
We experimentally characterize a plasmonic waveguide and demonstrate its capability of transmitting an optical signal at 49 Gbit/s. The 3.6-mm long gold strip embedded in Cytop polymer exhibits 13.2 dB optical insertion loss.
Plasmonic color filters and polarizers were produced using nanotransfer printing to create aluminium nanostructures, as small as 75nm, on a polycarbonate sheet measuring 10mm × 12mm. Plasmonic filters showed good agreement with simulations.
Recently preferential orientation was demonstrated in phosphorescent emitters. We simulate the efficiency of oriented emitters in bottom and top-emitting OLEDs. The oucoupling is increased by a factor 1.4 and 1.68 for bottom and top emission.
We propose sensitive imaging measurements enabled by waveguide-coupled surface plasmon resonance sensors. In the measurement, almost all the sensors with different waveguide thicknesses show around 60% sensitivity improvement compared with traditional surface plasmon resonance sensor.
We have compared a number of well known plasmonic guides in terms of power confinement, normalized power density, and propagation loss. We have identified the relative advantages and limitations of these guides.
The experimental realization of a nanoscale, high efficiency, and non-resonant broadband orthogonal junction as a coupling scheme between plasmonic slot and silicon waveguide is presented. This serves as an enabling platform for hybrid plasmonic interconnects.
We present two dual types of Si-based hybrid photonic-plasmonic structures for extreme light concentration. Both structures are ultra-compact (length < 1µm) and highly efficient.
The optical properties of gold stripe waveguides enhanced with a liquid-crystal overlayer are theoretically investigated. Extensive tunability of modal effective index, area and losses can be achieved via the electro-optic control of the nematic molecules.
We discuss an analytic expression for the spectral shape of propagating surface plasmon polaritons (SPPs). Based on Drude's model, the SPP spectral deformation, determined by differences in the intensity decay length, has been confirmed.
A novel polarization splitting is proposed through plasmonic-dielectric coupling with ultrashort coupling length. Extinction ratios of 20.8 dB and 17.0 dB for TE and TM polarizations are achieved at a coupling length of 4.13 µm.
We propose a novel ultra-compact (4.7 µm) hybrid-plasmonic polarization rotator at telecommunication wavelength for integrated Si photonic circuits. The device shows an extinction ratio of >17 dB, and low insertion losses of 1.6 dB.
We present various classes of monolithically-integrated nanoplasmonic devices and circuits on a complementary metal-oxide-semiconductor (CMOS) platform for electronic-plasmonic hybrid integration. Through this investigation, we demonstrate ultrafast switching, modulation and routing of such devices.
We studied a plasmonic graded grating structure that can simultaneously generate third harmonic ultraviolet light of different wavelengths at different positions along the grating. Such broadband discrete ultraviolet generation is achieved through surface dispersion engineering.
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.