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New method for lateral mapping of bimolecular recombination in thin-film organic solar cells

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Review: Progress in solar cells from hydrogenated amorphous silicon

Christophe Ballif, Franz-Josef Haug, Michael Elias Stückelberger, Rémi Biron

Hydrogenated amorphous silicon (alpha-Si:H) has been used for decades doped and as intrinsic absorber layers in thin-film silicon solar cells. Whereas their effiency was improved for a long time by the deposition of higher quality absorber layers, recent i ...

Elsevier2017

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For crystalline-silicon solar cells, voltages close to the theoretical limit are nowadays readily achievable when using passivating contacts. Conversely, maximal current generation requires the integration of the electron and hole contacts at the back of t ...

Nature Publishing Group2017

From randomly self-textured substrates to highly efficient thin film solar cells: Influence of geometric interface engineering on light trapping, plasmonic losses and charge extraction

Christophe Ballif, Franz-Josef Haug, Etienne Antoine Julien Moulin

An approach that models the fabrication and enables the characterization of randomly self-textured silicon thin film solar cells is developed and are compared to experimental results. The optical and electrical properties of the solar cells depend on the m ...

Elsevier2017

High Gain Dual-Band Beam-Steering Transmit Array for Satcom Terminals at Ka-Band

Juan Ramon Mosig, Joana Rita Alves dos Santos Silva

Transmit array design is more challenging for dualband operation than for single band, due to the independent 360 degrees phase wrapping jumps needed at each band when large electrical length compensation is involved. This happens when aiming at large gain ...

Ieee-Inst Electrical Electronics Engineers Inc2017

Inverted solar cell and process for producing the same

Michael Graetzel, Mohammad Khaja Nazeeruddin

The present invention relates to a method for producing a solid solar cells, comprising the steps of providing a hole collector layer, applying a conductive layer onto the hole collector layer, applying an electron blocking layer onto the conductive layer, ...

2016

Optical and electrical properties of hydrogenated nanocrystalline silicon (nc-Si:H) solar cells are strongly influenced by the morphology of underlying substrates. By texturing the substrates, the photogenerated current of nc-Si:H solar cells can increase ...

Amer Chemical Soc2016

Maximal absorption regime in random media

Olivier Martin, Christian Santschi, Volodymyr Koman

Efficient optical energy transfer is key to many technologies, ranging from biosensing to photovoltaics. Here, for the first time we show that by introducing a random medium with appropriate filling factor, absorption in a specific volume can be maximized. ...

Optical Society of America2016

Extended Intermolecular Interactions Governing Photocurrent-Voltage Relations in Ternary Organic Solar Cells

Ursula Röthlisberger, Wolfgang Richard Tress, Simone Meloni, Negar Ashari Astani, Feng Gao, Beatrice Beyer

Efficient organic solar cells are based on (electron) donor-acceptor heterojunctions. An optically generated excited molecular state (exciton) is dissociated at this junction, forming a charge-transfer (CT) state in an intermediate step before the electron ...

2016

Spherical dielectric particles, nanofibers, and nanorods have been widely used as embedded scattering objects in nanostructured thin film solar cells. Here we propose micron-scale rod-like dielectric particles as a more effective alternative to the spheric ...

RSC Publishing2015

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We present and experimentally validate a computational model for the light propagation in thin-film solar cells that integrates non-paraxial scalar diffraction theory with non-sequential ray-tracing. The model allows computing the spectral layer absorbance ...

Optical Society of America2015