Person

Thomas Söderström

This person is no longer with EPFL

Related publications (28)

A New View of Microcrystalline Silicon: The Role of Plasma Processing in Achieving a Dense and Stable Absorber Material for Photovoltaic Applications

Christophe Ballif, Matthieu Despeisse, Grégory Bugnon, Thomas Söderström, Jakub Holovsky, Gaetano Parascandolo, Peter Cuony, Simon Hänni

To further lower production costs and increase conversion efficiency of thin-film silicon solar modules, challenges are the deposition of high-quality microcrystalline silicon (μc-Si:H) at an increased rate and on textured substrates that guarantee efficie ...

2012

Optimization of ZnO Front Electrodes for High-Efficiency Micromorph Thin-Film Si Solar Cells

Christophe Ballif, Corsin Battaglia, Matthieu Despeisse, Mathieu Gérard Boccard, Sylvain Nicolay, Grégory Bugnon, Laura Ding, Thomas Söderström, Peter Cuony, Simon Hänni, Adrian Billet, Mathieu Charrière, Mustapha Benkhaira

The quest for increased performances in thin film silicon Micromorph tandem devices nowadays requires an increase of current density. This can be achieved with thin cells by combining both a robust cell design and efficient light management schemes. In thi ...

2012

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Nanometer wide silicon filaments embedded in an amorphous silicon oxide matrix are grown at low temperatures over a large area. The optical and electrical properties of these mixed-phase nanomaterials can be tuned independently, allowing for advanced light ...

Wiley-Blackwell2012

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

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Rigorous diffraction theory is a reliable tool to quantify the absorption enhancement in textured thin film solar cells. We provide a line of arguments that make the insights from such an involved analysis accessible to a broader community by using a scala ...

American Institute of Physics2011

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The use of zinc oxide (ZnO) based intermediate reflector (ZIR) in micromorph solar cells using low pressure chemical vapor deposition (LPCVD) was investigated. The influences of deposition temperature and dopant gas concentration on grain size and lateral ...

2011

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The performances of thin film silicon solar cells are reported for the use of increasingly rough zinc-oxide (ZnO) front electrodes. Experimental results show that textured substrates favor increased light trapping but also the local creation of undesired c ...

2010

ZnO Transparent conductive oxide for thin film silicon solar cells

Christophe Ballif, Franz-Josef Haug, Matthieu Despeisse, Mathieu Gérard Boccard, Sylvain Nicolay, Grégory Bugnon, Andrea Feltrin, Thomas Söderström, Sylvie Faÿ, Peter Cuony

There is general agreement that the future production of electric energy has to be renewable and sustainable in the long term. Photovoltaic (PV) is booming with more than 7GW produced in 2008 and will therefore play an important role in the future electric ...

Spie-Int Soc Optical Engineering, Po Box 10, Bellingham, Wa 98227-0010 Usa2010

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The deposition of a stack of amorphous (a-Si:H) and microcrystalline (µc- Si:H) tandem thin film silicon solar cells (micromorph) requires at least twice the time used for a single junction a-Si:H cell. However, micromorph devices have a higher potential e ...

2010

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Microcrystalline silicon (mc-Si:H) cells can reach efficiencies up to typically 10% and are usually incorporated in tandem micromorph devices. When cells are grown on rough substrates, ‘‘cracks’’ can appear in the mc-Si:H layers. Previous works have demons ...

2010

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