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Input silane concentration effect on the a-Si:H to uc-Si:H transition width

Publications associées (33)

Development of high band gap protocrystalline material for p-i-n thin film silicon solar cells

Fabio Maurizio

High band gap thin film silicon solar cells are of high interest for the use as top cell in triple junctions solar cells. Protocrystalline silicon, in the transition phase between amorphous and microcrystalline silicon, is such a high band gap material. Du ...
2012

Nanometer- and Micrometer-Scale Texturing for High-Efficiency Micromorph Thin-Film Silicon Solar Cells

Christophe Ballif, Corsin Battaglia, Jordi Escarre Palou, Matthieu Despeisse, Mathieu Gérard Boccard, Sylvain Nicolay, Grégory Bugnon, Laura Ding, Karin Söderström, Peter Cuony, Fanny Sculati-Meillaud, Simon Hänni, Adrian Billet, Mathieu Charrière, Mustapha Benkhaira

Optimized transparent conductive oxide front electrodes are vital to further increase the efficiency of thin-film silicon solar devices. We report details on the fabrication of multiscale textured zinc oxide substrates and their implementation in amorphous ...
2012

Electrically flat/optically rough substrates for efficiencies above 10% in n-i-p thin-film silicon solar cells

Christophe Ballif, Franz-Josef Haug, Grégory Bugnon, Karin Söderström

Substrates with extremely low roughness to allow the growth of good-quality silicon material but that nevertheless present high light trapping properties are presented. In a first application, silver reflectors are used in single and tandem-junction amorph ...
2012

Comparison between periodic and stochastic parabolic light trapping structures for thin-film microcrystalline Silicon solar cells

Corsin Battaglia

Light trapping is of very high importance for silicon photovoltaics (PV) and especially for thin-film silicon solar cells. In this paper we investigate and compare theoretically the light trapping properties of periodic and stochastic structures having sim ...
Optical Society of America2012

Optimization of thin film silicon solar cells on highly textured substrates

Christophe Ballif, Corsin Battaglia, Matthieu Despeisse, Mathieu Gérard Boccard, Grégory Bugnon, Thomas Söderström, Gaetano Parascandolo, Peter Cuony, Simon Hänni, Mathieu Charrière, Nils Linus Löfgren

Doped layers made of nanostructured silicon phases embedded in a silicon oxide matrix were implemented in thin film silicon solar cells. Their combination with optimized deposition processes for the silicon intrinsic layers is shown to allow for an increas ...
2011

Input silane concentration effect on the a-Si:H to μc-Si:Hμc-Si:H transition width

Christophe Ballif, Christoph Hollenstein, Alan Howling, Grégory Bugnon, Andrea Feltrin, Benjamin Strahm, Fanny Sculati-Meillaud

In this work the microstructure transition width from amorphous to microcrystalline silicon is discussed. It is shown that the width of the transition depends on the input silane concentration level and indirectly on the silane depletion level. The higher ...
Elsevier2010

Resistive interlayer for improved performance of thin film silicon solar cells on highly textured substrate

Christophe Ballif, Matthieu Despeisse, Grégory Bugnon, Andrea Feltrin, Peter Cuony, Adrian Billet

The deposition of thin-film silicon solar cells on highly textured substrates results in improved light trapping in the cell. However, the growth of silicon layers on rough substrates can often lead to undesired current drains, degrading performance and re ...
2010

Silane depletion dependent ion bombardment and material quality of microcrystalline silicon deposited by VHF-PECVD

Christophe Ballif, Grégory Bugnon, Julien Claude Bailat, Andrea Feltrin

Microcrystalline silicon is a composite material embedding silicon nanocrystals in an amorphous matrix [1]. It has attracted much research efforts in the photovoltaic domain [2], because of its potential for integration in a tandem cell concept as bottom c ...
2009

Research and developments in thin film silicon photovoltaics

Christophe Ballif, Franz-Josef Haug, Matthieu Despeisse, Grégory Bugnon, Andrea Feltrin, Thomas Söderström, Sylvie Faÿ, Gaetano Parascandolo, Martin Python

The increasing demand for photovoltaic devices and the associated crystalline silicon feedstock demand scenario have led in the past years to the fast growth of the thin film silicon industry. The high potential for cost reduction and the suitability for b ...
2009

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