Publications de Etienne Antoine Julien Moulin

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

Comparison of LPCVD and sputter-etched ZnO layers applied as front electrodes in tandem thin-film silicon solar cells

Christophe Ballif, Grégory Bugnon, Franz-Josef Haug, Michael Elias Stückelberger, Etienne Antoine Julien Moulin

Aluminum-doped zinc oxide (ZnO:Al) layers deposited by sputtering and boron-doped zinc oxide (ZnO:B) layers deposited by low-pressure chemical vapor deposition (LPCVD) are well-established materials for front electrodes in thin-film silicon solar cells. In ...

Elsevier2016

Design of periodic nano- and macro-scale textures for high-performance thin-film multi-junction solar cells

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

Surface textures in thin-film silicon multi-junction solar cells play an important role in gaining the photocurrent of the devices. In this paper, a design of the textures is carried out for the case of amorphous silicon/micro-crystalline silicon (a-Si:H/m ...

Iop Publishing Ltd2016

Metal versus dielectric back reflector for thin-film Si solar cells with impact of front electrode surface texture

Franz-Josef Haug, Jan-Willem Alexander Schüttauf, Etienne Antoine Julien Moulin, Chunmin Zhang

Thin-film Si solar cells employ a back reflector (BR) for a more efficient use of the long wavelength light. Here, we have carried out a cross evaluation of metal (Ag-based) and dielectric (white paint-based) BR designs. Conclusive results have been reache ...

Wiley-Blackwell2016

Silver versus white sheet as a back reflector for microcrystalline silicon solar cells deposited on LPCVD-ZnO electrodes of various textures

Christophe Ballif, Franz-Josef Haug, Mathieu Gérard Boccard, Etienne Antoine Julien Moulin

We compare the performance of two back reflector designs on the optoelectrical properties of microcrystalline silicon solar cells. The first one consists of a 5-mu m-thick low-pressure chemical vapor deposition (LPCVD)-ZnO electrode combined with a white s ...

Wiley-Blackwell2015

Three-dimensional amorphous silicon solar cells on periodically ordered ZnO nanocolumns

Christophe Ballif, Franz-Josef Haug, Michael Elias Stückelberger, Etienne Antoine Julien Moulin

We evaluate the potential of three-dimensional (3D) thin-film silicon solar cells in the superstrate configuration deposited on hexagonally ordered arrays of ZnO nanocolumns (NCs). These nanostructures are prepared by hydrothermal growth, which is an effec ...

Wiley-VCH Verlag2015

Highly transparent modulated surface textured front electrodes for high-efficiency multijunction thin-film silicon solar cells

Christophe Ballif, Franz-Josef Haug, Michael Elias Stückelberger, Etienne Antoine Julien Moulin, Hairen Tan

To further increase the efficiency of multijunction thin-film silicon (TF-Si) solar cells, it is crucial for the front electrode to have a good transparency and conduction, to provide efficient light trapping for each subcell, and to ensure a suitable morp ...

Wiley-Blackwell2015

Highly transparent front electrodes with metal fingers for p-i-n thin-film silicon solar cells

Etienne Antoine Julien Moulin, Urs Aeberhard

The optical and electrical properties of transparent conductive oxides (TCOs), traditionally used in thin-film silicon (TF-Si) solar cells as front-electrode materials, are interlinked, such that an increase in TCO transparency is generally achieved at the ...

Edp Sciences S A2015

Facile preparation of micron- and nano-scale textured master for nano-imprinting front electrode in thin-film silicon tandem cells with improved light trapping

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

This paper reports a facile method to prepare a textured surface with combined micron- and nano-scale surface features, which is used as master for nano-imprinting process to obtain transparent front electrodes in thin-film silicon tandem cells. The micron ...

Elsevier2015

Simultaneous realization of light distribution and trapping in micromorph tandem solar cells using novel double-layered antireflection coatings

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

Implementing antireflection (AR) coatings in micromorph tandem solar cells is a challenging process in which not only more sunlight should get conducted into the cells, but also the current matching between subcells should either be maintained or get impro ...

Elsevier2015

Light trapping in thin-film solar cells measured by Raman spectroscopy

Christophe Ballif, Grégory Bugnon, Etienne Antoine Julien Moulin, Martin Ledinsky

In this study, Raman spectroscopy is used as a tool to determine the light-trapping capability of textured ZnO front electrodes implemented in microcrystalline silicon (mu c-Si:H) solar cells. Microcrystalline silicon films deposited on superstrates of var ...

American Institute of Physics2014

Technological status of plasma-deposited thin-film silicon photovoltaics

Christophe Ballif, Arvind Shah, Etienne Antoine Julien Moulin

Basic properties of plasma-deposited amorphous and microcrystalline layers are summarized. Limitations for solar cell performance, which are a result of these basic properties are pointed out. Efficiencies and other solar cell parameters obtained for the b ...

Elsevier2013

Introducing the CTA concept

Christophe Bauer, Francisco Sanchez, Michael Werner, Mathieu Ribordy, Munehito Kagaya, Steve Couturier, Xiaoqing Zhou, Thomas Günther Bretz, Reto Frei, Etienne Antoine Julien Moulin, Bruno Garcia, Werner Lustermann

The Cherenkov Telescope Array (CTA) is a new observatory for very high-energy (VHE) gamma rays. CTA has ambitions science goals, for which it is necessary to achieve full-sky coverage, to improve the sensitivity by about an order of magnitude, to span abou ...

Elsevier Science Bv2013

Design concepts for the Cherenkov Telescope Array CTA: an advanced facility for ground-based high-energy gamma-ray astronomy

Pablo Roberto Ristori, Christophe Bauer, Francisco Sanchez, Céline Tchernin, Mathieu Ribordy, Steve Couturier, Thomas Günther Bretz, Etienne Antoine Julien Moulin, Bruno Garcia

Ground-based gamma-ray astronomy has had a major breakthrough with the impressive results obtained using systems of imaging atmospheric Cherenkov telescopes. Ground-based gamma-ray astronomy has a huge potential in astrophysics, particle physics and cosmol ...

2011