Franz-Josef Haug

About
Privacy
Disclaimer

Graph Chatbot

Related publications (113)

An RCWA Analysis of Solar Cell Back Reflectors: Comparison between Modelling and Experiment

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

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 onse ...

2010

UV-nano-imprint lithography technique for the replication of back reflectors for n-i-p thin film silicon solar cells

Christophe Ballif, Karin Söderström, Franz-Josef Haug, Jordi Escarre Palou

Texturing of interfaces in thin film silicon solar cells is essential to enhance the produced photocurrent and thus the efficiencies.AUVnano-imprint-lithography (UV-NIL) replication processwas developed to prepare substrates with textures that are suitable ...

2010

NANO-IMPRINT TECHNIQUE FOR BACK REFLECTOR IN HIGH EFFICIENCY N-I-P THIN FILM SILICON SOLAR CELLS

Christophe Ballif, Céline Pahud, Karin Söderström, Franz-Josef Haug, Jordi Escarre Palou, Rémi Biron

In this contribution, the replication of nano-textures enhancing the short circuit current of thin film silicon solar cells onto low cost substrates (glass or PolyEthylene Naphtalate (PEN)) is studied. Optical and morphological analysis is performed to ass ...

2010

Modeling of light scattering from micro- and nanotextured surfaces (vol 107, 044504, 2010)

Christophe Ballif, Franz-Josef Haug, Corsin Battaglia

American Institute of Physics2010

Flexible micromorph tandem a-Si/µc-Si solar cells

Christophe Ballif, Thomas Söderström, Vanessa Terrazzoni-Daudrix, Franz-Josef Haug

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

ZnO Transparent conductive oxide for thin film silicon solar cells

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

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

Research and developments in thin film silicon photovoltaics

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

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

Light trapping effects in thin film silicon solar cells

Christophe Ballif, Thomas Söderström, Franz-Josef Haug

We present advanced light trapping concepts for thin film silicon solar cells. When an amorphous and a microcrystalline absorber layers are combined into a micromorph tandem cell, light trapping becomes a challenge because it should combine the spectral re ...

2009

FINAL RESULTS OF THE EUROPEAN PROJECT FLEXCELLENCE ROLL TO ROLL TECHNOLOGY FOR THE PRODUCTION OF HIGH EFFICIENCY LOW COST THIN FILM SOLAR CELLS

Christophe Ballif, Thomas Söderström, Vanessa Terrazzoni-Daudrix, Franz-Josef Haug

This paper reports on the final main results of the Flexcellence project. The project was running for 3 years and its goal was the development of equipments and processes for cost-effective roll-to-roll production of high-efficiency flexible thin-film sili ...

2009

Influence of the ZnO buffer layer on the guided mode structure in Si/ZnO/Ag multilayers

Christophe Ballif, Thomas Söderström, Vanessa Terrazzoni-Daudrix, Franz-Josef Haug

We present a study of the optical mode structure in metal-dielectric multilayer structures that represent amorphous silicon thin film solar cells with metallic back contact. Knowledge of the modal structure represents a first step toward describing absorpt ...

2009

Development of micromorph tandem soalr cells on flexible low cost plastic substrates

Christophe Ballif, Martin Python, Thomas Söderström, Xavier Niquille, Vanessa Terrazzoni-Daudrix, Franz-Josef Haug

We report on the development of fully flexible microcrystalline and micromorph tandem solar cells directly on low-cost substrates like poly-ethylen-terephtalate (PET) and poly-ethylen-naphtalate (PEN). The cells are deposited in nip or nip/nip configuratio ...

2009

Asymmetric intermediate reflector for tandem micromorph thin film silicon solar cells

Christophe Ballif, Thomas Söderström, Xavier Niquille, Vanessa Terrazzoni-Daudrix, Franz-Josef Haug

The micromorph solar cell (stack of amorphous and microcrystalline cells) concept is the key for achieving high efficiency stabilized thin film silicon solar cells. We introduce a device structure that allows a better control of the light in-coupling into ...

AIP American Institute of Physics2009

Observation of fracture and plastic deformation during indentation and scratching inside the scanning electron microscope

Sven Nico Stauss, Jean-Marc Breguet, Johann Michler, Franz-Josef Haug

During nanoindentation measurements of thin films the formation of cracks within the film as well as of pile-up or sink-in around the indent are known to affect significantly the precision of hardness and Young's modulus values. The crack pattern in brittl ...

2004

Page 6 of 6