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Your search keyword '"Karin Söderström"' showing total 3 results
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3 results on '"Karin Söderström"'

1. Coupling between radiation and internal modes: light trapping in thin film solar cells with periodic texture

Author

Christophe Ballif, F.-J. Haug, and Karin Söderström

Subjects
Amorphous silicon, Materials science, business.industry, Photovoltaic system, Physics::Optics, chemistry.chemical_compound, Solar cell efficiency, Optics, chemistry, Optoelectronics, Quantum efficiency, Physics::Atomic Physics, Plasmonic solar cell, Texture (crystalline), Thin film, business, Excitation
Abstract

We present amorphous silicon solar cells on random and periodic back reflector geometries. 1D gratings offer an intuitive understanding of the light trapping process by excitation of guided modes. Using the same period and similar shape, better performance is observed on 2D gratings due to a higher number of resonances.

Published
2012
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2. An RCWA Analysis of Solar Cell Back Reflectors: Comparison between Modelling and Experiment

Author

Christophe Ballif, Karin Söderström, Hans Peter Herzig, Ali Naqavi, Vincent Paeder, Franz-Josef Haug, and Toralf Scharf

Subjects
Diffraction, Materials science, business.industry, Surface plasmon, Finite-difference time-domain method, Physics::Optics, Polarization (waves), Diffraction efficiency, law.invention, Computational electromagnetic methods, Optics, Solar cell efficiency, law, Solar cell, Surface plasmon resonance, business, Photovoltaic, Gratings
Abstract

We present a comparison between spectrally-resolved reflection measurements of gratings and theoretical predictions from RCWA approach. Diffraction intensities vary significantly with polarization, and surface plasmon absorption is observed around the onset of the diffraction orders.

Published
2010
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3. Photocurrent Increase in Thin Film Solar Cells by Guided Mode Excitation

Author

O. Cubero, Jordi Escarré, Franz-Josef Haug, Christophe Ballif, and Karin Söderström

Subjects
Photocurrent, Amorphous silicon, Materials science, business.industry, Photovoltaic system, Physics::Optics, Grating, chemistry.chemical_compound, Solar cell efficiency, Optics, chemistry, Optoelectronics, Quantum efficiency, Thin film, business, Absorption (electromagnetic radiation)
Abstract

Angle resolved measurements of the external quantum efficiency of a-Si solar cells deposited on a grating show strong absorption phenomena which are well explained with the guided mode structure in an equivalent flat multilayer system.

Published
2010
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