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Josef Andreas Schuler

Cette personne n’est plus à l’EPFL

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Publications associées (58)

Assessing visibility in multi-scale urban planning: A contribution to a method enhancing social acceptability of solar energy in cities

Christian Roecker, Jean-Louis Scartezzini, Josef Andreas Schuler, Maria Cristina Munari Probst, Pietro Florio

Urban areas are facing a growing deployment of solar photovoltaic and thermal technologies on building envelopes, both on roofs and on façades. An effective solar energy planning process considers social acceptance, in relation to the landscape alteration ...

2018

Infrared Optical Properties of Doped and Pure Thermochromic Coatings for Solar Thermal Absorbers

Josef Andreas Schuler, Fabrice Thierry Demière, Anna Krammer

A new generation of solar collectors is based on thermochromic thin film technology, where the remarkable optical changes of vanadium dioxide, through its reversible semiconductor-to-metal phase transition, are exploited. This study reports on the infrared ...

ISES2018

Tunable RF phase shifters based on Vanadium Dioxide metal insulator transition

Mihai Adrian Ionescu, Josef Andreas Schuler, Montserrat Fernandez-Bolanos Badia, Wolfgang Amadeus Vitale, Emanuele Andrea Casu, Nicolò Oliva, Anna Krammer, Alessandro Fumarola, Matteo Cavalieri, Andrei Müller

2018

Vanadium Oxide Bandstop Tunable Filter for Ka Frequency Bands Based on a Novel Reconfigurable Spiral Shape Defected Ground Plane CPW

Mihai Adrian Ionescu, Josef Andreas Schuler, Montserrat Fernandez-Bolanos Badia, Emanuele Andrea Casu, Anna Krammer, Alessandro Fumarola, Andrei Müller

2018

A Steep-Slope Transistor Combining Phase-Change and Band-to-Band-Tunneling to Achieve a sub-Unity Body Factor

Mihai Adrian Ionescu, Josef Andreas Schuler, Wolfgang Amadeus Vitale, Arnab Biswas, Cem Alper, Emanuele Andrea Casu, Teodor Rosca, Anna Krammer, Qun Zhao

Steep-slope transistors allow to scale down the supply voltage and the energy per computed bit of information as compared to conventional field-effect transistors (FETs), due to their sub-60 mV/decade subthreshold swing at room temperature. Currently pursu ...

Nature Research2017

Laminated glazing with coloured reflection and high solar transmittance suitable for solar energy systems

Andreas Schueler, Josef Andreas Schuler, Virginie Hody-Le Caër

Laminated and etched glazing unit for architectural integration of solar energy systems comprising a substrate delimited by two main faces and a multi-layered interference filter also delimited by two main faces, one main face of said substrate being adapt ...

2017

Coating for optical and electronic applications

Andreas Schueler, Josef Andreas Schuler, Antonio Paone, Anna Krammer

Single- or multilayered coating, such as a selective solar absorber coating or a coating being part of an integrated electronic circuit, comprising one or more layers containing germanium (Ge) doped VO2+x, where -0.1 ≤ x ≤ 0.1. ...

2017

Shunt capacitive switches based on VO2 metal insulator transition for RF phase shifter applications

Mihai Adrian Ionescu, Andreas Schueler, Josef Andreas Schuler, Montserrat Fernandez-Bolanos Badia, Wolfgang Amadeus Vitale, Emanuele Andrea Casu, Mariazel de la Candelas Maqueda López, Michele Tamagnone, Nicolò Oliva, Anna Krammer

IEEE2017

Hybrid phase-change — Tunnel FET (PC-TFET) switch with subthreshold swing < 10mV/decade and sub-0.1 body factor: Digital and analog benchmarking

Mihai Adrian Ionescu, Josef Andreas Schuler, Wolfgang Amadeus Vitale, Arnab Biswas, Cem Alper, Emanuele Andrea Casu, Teodor Rosca, Nicolò Oliva, Anna Krammer

In this paper we report the first hybrid Phase-Change - Tunnel FET (PC-TFET) device configurations for achieving a deep sub-thermionic steep subthreshold swing at room temperature and subthreshold power savings. The proposed hybrid device feedbacks the ste ...

IEEE2016

Investigation of the metal-insulator transition in VO2 for Electronic Switches with Sub-1mV/Decade Steep Subthreshold Slope

Mihai Adrian Ionescu, Andreas Schueler, Josef Andreas Schuler, Antonio Paone, Clara-Fausta Moldovan, Wolfgang Amadeus Vitale

We report a thorough investigation of the electrically-induced metal-insulator transition in vanadium dioxide (VO2) for abrupt switching in 2-terminal devices (0.24 mV/dec at 25 °C, 0.38 mV/dec at 50 °C). We exploit the electrothermal actuation model based ...

IEEE2016

Experimental Determination of Optical and Thermal Properties of Semi-transparent Photovoltaic Modules Based on Dye-sensitized Solar Cells

Josef Andreas Schuler, Olivia Valérie Charlotte Bouvard, Sara Vanzo

The demand for energy efficiency of buildings and on-site electricity production is rising. Building integrated photovoltaic can provide a part of the electricity demand. Many studies are related to the module efficiency. However, architectural integration ...

2015

Fabrication of CMOS-compatible abrupt electronic switches based on vanadium dioxide

Mihai Adrian Ionescu, Josef Andreas Schuler, Antonio Paone, Clara-Fausta Moldovan, Wolfgang Amadeus Vitale

Vanadium dioxide thin films were deposited on amorphous SiO2-coated Si substrates, by reactive magnetron sputtering at 490 °C of a pure vanadium target. The deposition parameters were optimized in order to maximize the resistivity modulation due to the met ...

Elsevier2015

Interference filter with angular independent orange colour of reflection and high solar transmittance, suitable for roof-integration of solar energy systems

Andreas Schueler, Josef Andreas Schuler, Martin Joly

olar glazing unit, suitable for photovoltaic modules and solar thermal collectors, comprising a substrate delimited by two main faces and a multi-layered interference filter also delimited by two main faces, one main face of said substrate being adapted to ...

2015

Tunable Capacitors and Microwave Filters Based on Vanadium Dioxide Metal-Insulator Transition

Mihai Adrian Ionescu, Josef Andreas Schuler, Montserrat Fernandez-Bolanos Badia, Antonio Paone, Clara-Fausta Moldovan, Wolfgang Amadeus Vitale

We report the fabrication, modeling and characterization of novel microwave tunable capacitors based on the metal-insulator transition (MIT) of Vanadium Dioxide (VO2). We present the advantages of VO2-based capacitors over alternative technologies for micr ...

2015

Location Based Study of the Annual Thermal Loads with Microstructured Windows in European Climates

André Gabriel Kostro, Josef Andreas Schuler, Sara Vanzo

Glazed envelopes can cause significant thermal energy gains or losses. The installation of a novel design of Complex Fenestration Systems (CFS), such as embedded mirrors, could significantly contribute to reduce the energy consumption. In order to determin ...

2015

Glazing with embedded microstructures for daylighting and seasonal thermal control

Andreas Schueler, André Gabriel Kostro, Josef Andreas Schuler

A glazing for daylighting and seasonal thermal control, the glazing including a pane defined between an outside-oriented interface and an inside-oriented interface, the pane comprising a first component and a second component, wherein the first component h ...

2015

Method for hardening a coating of a solar collector element, and elements produced by means of said method

Andreas Schueler, Josef Andreas Schuler, Martin Joly

The invention relates to a method for hardening a coating of a solar collector element, said element including a conductive material or a conductive layer. The invention is characterised in that the coating is hardened by induction heating. ...

2015

Three-dimensional microstructural mapping of poisoning phases in the Neodymium Nickelate solid oxide fuel cell cathode

Jan Van Herle, Josef Andreas Schuler, Henning Lübbe, Jun Wang

Nd-Nickelate (NNO), Nd1.95NiO4+delta, an alternative solid oxide fuel cell cathode material, has been imaged and mapped in 3D using synchrotron-based x-ray nanotomography. The NNO cathode material, which suffered from silicon contamination during fabricati ...

Elsevier Science Bv2013

Cr-poisoning in (La,Sr)(Co,Fe)O-3 cathodes after 10,000 h SOFC stack testing

Aïcha Hessler-Wyser, Jan Van Herle, Zacharie Wuillemin, Josef Andreas Schuler

After 10,000 h solid oxide fuel cell (SOFC) stack operation, the Cr-poisoning situation in (La0.6Sr0.4) (Co0.2Fe0.8)O-3 (LSCF)-based cathode material is depicted in this work. Systematic Cr profiling by energy-dispersive X-ray spectroscopy (EDS), from post ...

Elsevier2012

Novel Colored Esthetical and Lightweight Photovoltaic Tiles for Full Building Integration

Christophe Ballif, Yves Leterrier, Christian Roecker, Jean-Louis Scartezzini, Josef Andreas Schuler, Matthieu Mottet, Valentin Chapuis, Martin Joly, Stefan Mertin, Robert James Tween

2012

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