Concept

Fluorure de magnésium

Publications associées (8)

22% Efficient Dopant-free Interdigitated Back Contact Silicon Solar Cells

Christophe Ballif, Bertrand Yves Paul Paviet-Salomon, Matthieu Despeisse, Mathieu Gérard Boccard, Sihua Zhong, Wenjie Lin, Weiliang Wu, Hui Shen

In this study, we present dopant-free back contact heterojunction silicon solar cells employing MoOx and MgFx based stacks as hole-and electron-selective contacts deposited using a thermal evaporation process at low temperature. Only two masking steps and ...

AMER INST PHYSICS2018

Reactively Sputtered Nano-Structured Multilayer Coatings on Architectural Glazing for Active Solar Energy Façades

Stefan Mertin

Improving the aesthetic of solar thermal collectors would grant architects a huge potential for a perfect integration of solar panels into building façades: this can be achieved by coloured interference coatings on the cover glass. These coatings also open ...

EPFL2015

Record Infrared Internal Quantum Efficiency in Silicon Heterojunction Solar Cells With Dielectric/Metal Rear Reflectors

Christophe Ballif, Antoine Descoeudres, Stefaan De Wolf

Inserting a dielectric between the absorber and rear metal electrode of a solar cell increases rear internal reflectance by both limiting the transmission cone and suppressing the plasmonic absorption of light arriving outside of the cone. We fabricate rea ...

Ieee-Inst Electrical Electronics Engineers Inc2013

Femtosecond versus picosecond laser machining of nano-gratings and micro-channels in silica glass

Yves Bellouard

The ability of 8 picosecond pulse lasers for three dimensional direct-writing in the bulk of transparent dielectrics is assessed through a comparative study with a femtosecond laser delivering 600 fs pulses. The comparison addresses two main applications: ...

Optical Society of America2013

Universal Dynamics of Kerr-Frequency Comb Formation in Microresonators

Tobias Kippenberg, Tobias Herr, Emanuel Gavartin

We experimentally investigate the initial dynamics of Kerr-frequency comb formation in crystalline MgF2 and planar Si3N4 microresonator and present a universal, platform independent condition for low phase noise performance. ...

Ieee2012

Universal formation dynamics and noise of Kerr-frequency combs in microresonators

Tobias Kippenberg, Tobias Herr, Emanuel Gavartin

Optical frequency combs allow for the precise measurement of optical frequencies and are used in a growing number of applications. The new class of Kerr-frequency comb sources, based on parametric frequency conversion in optical microresonators, can comple ...

Nature Publishing Group2012

Étude expérimentale des propriétés optiques des cristaux photoniques bidimensionnels et de leur accordabillité

Barbara Wild

Photonic crystals are periodic dielectric structures, where the periodicity varies in one, two or three dimensions. Analogous to the periodic potential of electrons in semiconductors, the periodic variation of the dielectric constant influences the electro ...

EPFL2006

Focused electron beam induced deposition of a periodic transparent nano-optic pattern

Patrik Willi Hoffmann, Ivo Utke, Marcel Leutenegger, Silviu Cosmin Sandu, Adrian Bachmann

In this paper we describe the fabrication of a two-dimensional photonic band gap structure by focused electron beam induced deposition. Structure geometry is computed in order to create a light-trapping effect at 632 nm wavelength. Deposits produced using ...

2004

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