Due to their fascinating optical and electronical properties, nanometer-scaled structures play an important role in solar energy conversion. In our research group at EPFL’s Solar Energy Laboratory LESO-PB, we develop novel micro- and nanostructured smart materials for active and passive solar energy applications being integrated into the building envelope. We focus on thin films, because these allow covering a large surface area with a small quantity of raw material – and we focus on their electronic and optical properties, because these closely interrelated properties are most important for the utilisation of solar energy.
Nanocomposite coatings consist typically of dielectric, semiconductor or metal nanocrystals being embedded in a dielectric matrix. Effective medium theories such as the Bruggeman and the Ping Sheng theories are used to model the dielectric function of nanocomposite materials. Micro- and/or nanostructuring materials can result in very interesting features such as tuneable band-gaps by quantum confinement, adjustable complex dielectric function, enhanced mechanical stability, superhydrophobicity, frequency-selective surfaces FSS, etc. The semiconductor-to-metal transition observed in transition metal oxides with strong electron correlations can be exploited for smart switching coatings.
The scope of envisaged solar energy applications is large. Recent work focuses especially on smart materials, such as thermochromic selective solar absorber coatings for overheating protection of solar thermal systems, and electrochromic coatings for switchable windows. Further applications include novel microstructured glazing with strong seasonal dependence of the solar heat gains, photoluminescent quantum dot solar concentrators for photovoltaic energy conversion, antireflection coatings on solar collector glazing, colored coatings with high solar transmittance for novel glazing of photovoltaic facades, selective solar absorber coatings for thermal solar collectors and thermoelectric power generation, as well as novel insulating glazing with high transmittance for the microwaves of mobile communication.
- Optical coatings on solar glass for photovoltaic modules and solar thermal collectors – development of colored glazing for solar facades and solar roofing
- Solid-ion-conductors for durable electrochromic windows
- Metallic micro-/nanomeshes for transparent conductive layers
- Nanostructured low refractive index materials on solar collector glazing
- Smart selective solar absorber coatings based on reversible semiconductor-to-metal transition
- Optical microstructures for advanced architectural glazing
- Energy efficiency of public transportation
- Frequency-selective surfaces by nanosecond laser-ablation
- Angular dependent optical and thermal properties of advanced architectural glazing
- Highly durable selective solar absorber coatings for solar thermal collectors and electricity generation by concentrated solar power (CSP)
- Quantum dot solar concentrators for building integrated photovoltaics
WO2017134589 (A1) : Coating for optical and electronic applications – 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.
Krammer Anna, Paone Antonio, Schüler Andreas
PCT/IB2017/051952: Solar cooker
Mauree Dasaraden, Schueler Andreas, Diévart Alexandre, Bouvard Olivia
WO 2014045141 A2: Laminated glazing with coloured reflection and high solar transmittance suitable for solar energy systems
Le Caër Hody Virginie, Schüler Andreas (Déposant SwissInso SA)
WO 2014045144 A1: Interference filter with angular independent orange colour of reflection and high solar transmittance, suitable for roof-integration of solar energy systems
www.glassdbase.ch – an independent and comprehensive building glass database set up by University of Basel, Switzerland and now managed by LESO-PB
Bouvard Olivia, Scartezzini Jean-Louis and Schueler Andreas (Dirs.). Coatings with tailored electronic and optical properties for advanced glazing. EPFL Thesis n° 9199 (2019)
Microstructured glazing for daylighting, glare protection, seasonal thermal control and clear view. EPFL PhD thesis, n° 6465 (2015)
A. Paone, J.-L. Scartezzini and A. Schueler (Dirs.). Switchable Selective Absorber Coatings for Overheating Protection of Solar Thermal Collectors. EPFL PhD thesis, n° 5878 (2013)
Développement et optimisation de revêtements minces nanostructurés pour capteurs solaires thermiques et modules photovoltaïques. EPFL PhD thesis, n° 5541 (2012).
RailTech 2019 Innovation Award, Utrecht, to Andreas Schüler, Olivia Bouvard, Luc Burnier, Jérémy Fleury, for Energy efficient windows that transmit telephone signals.
Watt d’Or 2018 “Energy efficient mobility” by Swiss Federal Office of Energy, Andreas Schüler, Olivia Bouvard, Luc Burnier, Jérémy Fleury (as part of a team headed by BLS train company and Basel University), for Nina trains energy efficiency modernisation. Contribution: energy efficient windows transparent to phone signals.
Award winning publications
Jing Gong, André Kostro, Jean-Louis Scartezzini, Andreas Schüler, Feasibility study on a novel daylighting system with embedded micro compound parabolic concentrators (CPCs). Nonimaging Optics: Efficient Design for Illumination and Solar Concentration XV (Vol. 10758, p. 1075807). International Society for Optics and Photonics. Nonimaging optics best paper award – SPIE Optical Engineering & Applications, 2018, 19-20 August 2018, San Diego, CA, USA
Martin Joly, Yan Antonetti, Martin Python, Marina Gonzalez, Thomas Gascou, Jean-Louis Scartezzini, Andreas Schüler, Novel black selective coating for tubular solar absorbers based on a sol-gel method, Solar Energy Journal Best Paper Award 2012-2013
Peter Oelhafen, Andreas Schueler, Nanostructured materials for solar energy conversion, Solar Energy Journal Best Paper in Energy Conversion Award 2005/2006
EKLT: Asynchronous Photometric Feature Tracking Using Events and FramesInternational Journal of Computer Vision. 2022-08-22. DOI : 10.1007/s11263-019-01209-w.
The Influence of Mountain-Ridge Scale Snow Precipitation Processes on the Local Snow Distribution27th IUGG General Assembly, Montréal, Canada, 8-18 july, 2019.
A Politics of Intellectual Property: The French Revolution and the Creation of a Patent SystemTechnology & Culture. 2020-07-01.
Single-Stage 6D Object Pose Estimation2020-06-16. IEEE Conference on Computer Vision and Pattern Recognition, Seattle, Washington, June 16 – 18, 2020.
Precipitation Pathways: In Situ Liquid SAXS Studies on the Early Stage of Calcium Carbonate Formation (Part. Part. Syst. Charact. 6/2019)Particle & Particle Systems Characterization. 2020-06-14. Vol. 36, num. 6, p. 1970014. DOI : 10.1002/ppsc.201970014.
Progress in the Design of a Hybrid HTS-Nb3Sn-NbTi Central Solenoid for the EU DEMOIeee Transactions On Applied Superconductivity. 2020-06-01. Vol. 30, num. 4, p. 4200705. DOI : 10.1109/TASC.2020.2965066.
Inter-Layer Joint of Nb3Sn React&Wind Cables for Fusion MagnetsIeee Transactions On Applied Superconductivity. 2020-06-01. Vol. 30, num. 4, p. 4200505. DOI : 10.1109/TASC.2020.2965862.
Joint Human Pose Estimation and Stereo 3D Localization2020-06-01. International Conference on Robotics and Automation (ICRA), paris, france, May 31th, June 4th 2020.
Arm-hand motion-force coordination for physical interactions with non-flat surfaces using dynamical systems: Toward compliant robotic massage2020-05-31. International Conference on Robotics and Automation, Paris, France, May 31-June 4, 2020.
Noise-Resilient and Interpretable Epileptic Seizure Detection2020-05-17. IEEE International Symposium on Circuits and Systems – ISCAS 2020, Seville, Spain, May 17-21, 2020.
A novel proposition for a citrate-modified photo-Fenton process against bacterial contamination of microalgae culturesApplied Catalysis B: Environmental. 2020-05-15. Vol. 265, p. 118615. DOI : 10.1016/j.apcatb.2020.118615.
Multiscale simulation of erosive wear in a prototype-scale Pelton runnerRenewable Energy. 2020-05-04. Vol. 151, p. 204-215. DOI : 10.1016/j.renene.2019.11.018.
Design and development of the efficient anguilliform swimming robot- MARBioinspiration & Biomimetics. 2020-05-01. Vol. 15, num. 3, p. 035001. DOI : 10.1088/1748-3190/ab6be0.
FeO-based nanostructures and nanohybrids for photoelectrochemical water splittingProgress In Materials Science. 2020-05-01. Vol. 110, p. 100632. DOI : 10.1016/j.pmatsci.2019.100632.
Conversion of vine shoots into bioethanol and chemicals: Prospective LCA of biorefinery conceptBioresource Technology. 2020-05-01. Vol. 303, p. 122946. DOI : 10.1016/j.biortech.2020.122946.
Gaussian and sparse processes are limits of generalized Poisson processesApplied And Computational Harmonic Analysis. 2020-05-01. Vol. 48, num. 3, p. 1045-1065. DOI : 10.1016/j.acha.2018.10.004.
Machiavellian males with high emotional intelligence exhibit fewer depressive symptomsPersonality and Individual Differences. 2020-05-01. Vol. 158, p. 109867. DOI : 10.1016/j.paid.2020.109867.
Lens aberration compensation in interference microscopyOptics and Lasers in Engineering. 2020-05-01. Vol. 128, p. 106015. DOI : 10.1016/j.optlaseng.2020.106015.
On the probability distribution of the local times of diagonally operator-self-similar Gaussian fields with stationary incrementsBernoulli. 2020-05-01. Vol. 26, num. 2, p. 1504-1534. DOI : 10.3150/19-BEJ1169.
Cooperative energy management of a community of smart-buildings: A Blockchain approachInternational Journal Of Electrical Power & Energy Systems. 2020-05-01. Vol. 117, p. 105643. DOI : 10.1016/j.ijepes.2019.105643.
Lipschitz constant estimation for Neural Networks via sparse polynomial optimization2020-04-26. 8th International Conference on Learning Representations, Addis Ababa, ETHIOPIA, April 26-30, 2020.
A momentum-conserving wake superposition method for wind farm power predictionJournal Of Fluid Mechanics. 2020-04-25. Vol. 889, p. A8. DOI : 10.1017/jfm.2020.77.
Effect of aspect ratio on vertical-axis wind turbine wakesJournal Of Fluid Mechanics. 2020-04-25. Vol. 889, p. R1. DOI : 10.1017/jfm.2020.93.
L’archive, un outil d’avenir2020-04-23.
Anomalous Nernst effect in Co2MnGa thin films with perpendicular magnetic anisotropyJournal Of Magnetism And Magnetic Materials. 2020-04-15. Vol. 500, p. 166397. DOI : 10.1016/j.jmmm.2020.166397.
The uniform symbolic topology property for diagonally F-regular algebrasJournal Of Algebra. 2020-04-15. Vol. 548, p. 25-52. DOI : 10.1016/j.jalgebra.2019.11.017.
Self-similar invariant solution in the near-wall region of a turbulent boundary layer at asymptotically high Reynolds numbersJournal Of Fluid Mechanics. 2020-04-10. Vol. 888, p. A15. DOI : 10.1017/jfm.2019.1067.
Microsurgical resection of a radicular hemangioblastoma with subarachnoid hemorrhage: how I do itActa Neurochirurgica. 2020-04-01. Vol. 162, num. 4, p. 957-959. DOI : 10.1007/s00701-020-04229-5.
Advance in the conceptual design of the European DEMO magnet systemSuperconductor Science & Technology. 2020-04-01. Vol. 33, num. 4, p. 044013. DOI : 10.1088/1361-6668/ab75a9.
Statistical Burnup Distribution of Moving Pebbles in the High-Temperature Reactor HTR-PMJournal Of Nuclear Engineering And Radiation Science. 2020-04-01. Vol. 6, num. 2, p. 021108. DOI : 10.1115/1.4044910.
Mouse Systems Genetics as a Prelude to Precision MedicineTrends In Genetics. 2020-04-01. Vol. 36, num. 4, p. 259-272. DOI : 10.1016/j.tig.2020.01.004.
Intrinsic fracture behavior of Mg-Y alloysModelling And Simulation In Materials Science And Engineering. 2020-04-01. Vol. 28, num. 3, p. 035012. DOI : 10.1088/1361-651X/ab76b3.
Agito ergo sum: Correlates of spatio-temporal motion characteristics during fMRINeuroimage. 2020-04-01. Vol. 209, p. 116433. DOI : 10.1016/j.neuroimage.2019.116433.
Meteolakes: An operational online three-dimensional forecasting platform for lake hydrodynamicsWater Research. 2020-04-01. Vol. 172, p. 115529. DOI : 10.1016/j.watres.2020.115529.
Evaluation of Total Reactive Oxide Ratios and Working Solution Ratios on Strength Development in Fly Ash-Based GeopolymersJournal Of Materials In Civil Engineering. 2020-04-01. Vol. 32, num. 4, p. 04020051. DOI : 10.1061/(ASCE)MT.1943-5533.0003109.
Role of the RNA-binding protein Bicaudal-C1 and interacting factors in cystic kidney diseasesCellular Signalling. 2020-04-01. Vol. 68, p. 109499. DOI : 10.1016/j.cellsig.2019.109499.
Treatment of the implicit effect in Shark-XAnnals Of Nuclear Energy. 2020-04-01. Vol. 138, p. 107178. DOI : 10.1016/j.anucene.2019.107178.
Glacier retreat changes diurnal variation intensity and frequency of hydrologic variables in Alpine and Andean streamsJournal of Hydrology. 2020-04. Vol. 583, p. 124578. DOI : 10.1016/j.jhydrol.2020.124578.
ExprADA: Adversarial domain adaptation for facial expression analysisPattern Recognition. 2020-04-01. Vol. 100, p. 107111. DOI : 10.1016/j.patcog.2019.107111.
In-depth assessment of potential new data integration into the MIP
Heavy metals and persistent organic pollutants contamination in river, estuary, and marine sediments from Atlantic Coast of Democratic Republic of the CongoEnvironmental Science and Pollution Research. 2020-03-30. Vol. 27, num. 10. DOI : 10.1007/s11356-020-08179-4.
Les ateliers d’autoréparation de vélo, entre vélo et mode de vie. Etat de l’art.
Variations on the theme of Plattenbau. Heavy prefabrication and total industrialisation in the experience of the Göhner housing estates in Switzerland (1966-1979)History of Engineering – Proceedings of the 4th International Conference; Naples: Cuzzolin, 2020-03-25.
Salt enhances the thermostability of enteroviruses by stabilizing capsid protein interfacesJournal of Virology. 2020-03-25. DOI : 10.1128/JVI.02176-19.
Recommendations for the MIP Technical Development During SGA3