Resonant nano-dimer metasurface for ultra-thin a-Si:H solar cells

Nano-Photonic Structures for Light Trapping in Ultra-Thin Crystalline Silicon Solar Cells

Thick wafer-silicon is the dominant solar cell technology. It is of great interest to develop ultra-thin solar cells that can reduce materials usage, but still achieve acceptable performance and high solar absorption. Accordingly, we developed a highly absorbing ultra-thin crystalline Si based solar cell architecture using periodically patterned front and rear dielectric nanocone arrays which p...

Multi-resonant absorption in ultra-thin silicon solar cells with metallic nanowires.

We propose a design to confine light absorption in flat and ultra-thin amorphous silicon solar cells with a one-dimensional silver grating embedded in the front window of the cell. We show numerically that multi-resonant light trapping is achieved in both TE and TM polarizations. Each resonance is analyzed in detail and modeled by Fabry-Perot resonances or guided modes via grating coupling. Thi...

Resonant Raman characterisation of ultra-thin nano-protective carbon layers for magnetic storage devices

Carbon thin films are very important as protective coatings for a wide range of applications such as magnetic storage devices. The key parameter of interest is the sp fraction, since it controls the mechanical properties of the film. Visible Raman 3 spectroscopy is a very popular technique to determine the carbon bonding. However, the visible Raman spectra mainly depend on the configuration and...

Multi-resonant Silver Nano-disk Patterned Thin Film Hydrogenated Amorphous Silicon Solar Cells for Staebler-Wronski Effect Compensation

Nano-scale Characterization of Thin-Film Solar Cells

1. Microstructure Physics and Alloy Design, Max-Planck-Institut für Eisenforschung GmbH, Düsseldorf, Germany. 2. Zentrum für Sonnenenergieund Wasserstoff-Forschung Baden Württemberg, Stuttgart, Germany. 3. Laboratory for Photovoltaics, University of Luxembourg, Belvaux, Luxembourg 4. LPMCN, CRNS, Université Lyon 1, Villerbanne, France. 5. Laboratoire des Solides Irradiés and ETSF, École Polytec...