Lukas Wagner

I am very happy to share that I am now leading my own research group! 🎉🔬
My group at @UniMarburg will work on #SustainablyScalable #Perovskite #Photovoltaics (superPV group). ☀️⚡

I am grateful to #BMFTR for supporting me with a 5-year, ~2M€ grant in the #NanoMatFutur program.

Rohstoffe für die Solarenergie: Nachhaltige Photovoltaik beginnt im Labor Beim Solarboom werden Effizienz und Materialverbrauch zu entscheidenden Herausforderungen, wenn es darum geht, auf viele Terawatt hochzuskalieren.

🔬📣 #ScienceCommmunication is fun: I had the chance to write an article for #SpektrumDerWissenschaft (German version of #ScientificAmerican), discussing how to scale #photovoltaics #sustainably to a global #energy source www.spektrum.de/news/solaren...

Mensch hockt auf einem begrünten Dach zwischen Solarmodulen.

Marburger Studie zeigt: #Photovoltaik wächst gobal in den #Terawatt-Maßstab. Damit #Solarenergie nachhaltig bleibt, müssen #Materialwahl und #Recycling schon heute mitgedacht werden. Review von Dr. Lukas Wagner et al in Nature Reviews Clean Technology. Foto: Jan Hosan uni-marburg.de/gWDi8s

Eine allgemeinverständliche Zusammenfassung unseres @natrevcleantech.nature.com Artikels auf der Webseite der @unimarburg.bsky.social:
www.uni-marburg.de/de/aktuelles...
@physicsmarburg.bsky.social

Actions for sustainably scalable multi-terawatt photovoltaics - Nature Reviews Clean Technology The large-scale deployment of photovoltaics could create new raw material demands and has the potential to create large end-of-life waste management issues in the future. This Review explores methods ...

We, including @lukaswagner.bsky.social, @rpietzcker.bsky.social, @mldavies04.bsky.social, looked into the necessary steps to keep solar energy growing on the long term by actively addressing the different dimensions of sustainability www.nature.com/articles/s44... in @natrevcleantech.nature.com

Actions for sustainably scalable multi-terawatt photovoltaics - Nature Reviews Clean Technology The large-scale deployment of photovoltaics could create new raw material demands and has the potential to create large end-of-life waste management issues in the future. This Review explores methods ...

New Review online from a great team including
@lukaswagner.bsky.social, @janoschsolar.bsky.social, @rpietzcker.bsky.social, @mldavies04.bsky.social. Now that PV production is up at the TW scale, what actions are needed to keep production sustainable ☀️

www.nature.com/articles/s44...

Preisverleihung: Zwei Menschen halten eine Urkunde in die Kamera

Auszeichnung für Marburger #Physiker: Dr. Lukas Wagner erhält ein Wilhelm und Else Heraeus Research Fellowship. Die Stiftung würdigt seine Forschung zu nachhaltigen #Perowskit-Solarzellen – ein Beitrag für die Energiewende und die Zukunft der #Photovoltaik. uni-marburg.de/Y320TL Foto: D Aussenhofer

Photograph of the price veremony. (Photo: David Ausserhofer)

I am happy to share that I as awarded a #ResearchFellowship by the #WEHeraeusFoundation for outstanding researchers in the early stages of their careers. The funds, amounting to 100,000 €, are quite freely available for research activities.
More infos: lnkd.in/d3BYDmTa

Foto showing a poster and SMU demonstrators

On the @nanoge.org #PerFunPro conference, Clemens Baretzky and I showed our development of an ultra low-cost, #SMU system. We already implemented parallel #MPP tracker #ageing of >700 #perovskite solar cells and will be further expanding the system for high-throughput stability assessments.

Tuning Porosity in Laminated Carbon Electrodes via Solvent Treatment Enables >20% Efficient Perovskite Solar Cells Solvent treatment of laminated carbon electrodes reduces porosity, significantly lowering contact and sheet resistance. This improvement translates to enhanced device performance, enabling perovskite....

#CPSC with PCE>20%! Hadi Mohammadzadeh @fraunhoferise.bsky.social et al. introduced a method do optimize #carbon electrode lamination for #perovskite solar cells. I'm very happy to being part of this work which paves the way for further improvements (coming soon). doi.org/10.1002/solr...

It was a pleasure chairing together with @nakitaknoel.bsky.social a session at the @nanoge.org #PerFunPro conference.
Thanks for great talks: @brunoehrler.bsky.social, Ivan Zaluzhnyy, Fatemeh Haddadi Barzoki, Tobias Schulz, Dilara Öz, @janoschsolar.bsky.social , Tomasz Marszalek, Maryam Choghaei.

Charge Extraction Multilayers Enable Positive-Intrinsic-Negative Perovskite Solar Cells with Carbon Electrodes Perovskite solar cells achieve high power conversion efficiencies but usually rely on vacuum-deposited metallic contacts, leading to high material costs for noble metals and stability issues for more reactive metals. Carbon-based materials offer a cost-effective and potentially more stable alternative. The vast majority of carbon-electrode PSCs use the negative-intrinsic-positive (n-i-p) or “hole-transport-layer-free” architectures. Here, we present a systematic study to assess the compatibility of “inverted”, p-i-n configuration PSC contact layers with carbon top electrodes. We identify incompatibilities between common electron transport layers and the carbon electrode deposition process and previously unobserved semiconducting properties in carbon electrodes with unique implications for charge extraction and electronic behavior. To overcome these issues, we introduce a double-layer atomic layer deposited tin oxide (SnO2) and Poly(2,3-dihydrothieno-1,4-dioxin)-poly(styrenesulfonate) (PEDOT:PSS), yielding up to 16.1% PCE and a retained 94% performance after 500 h of outdoor aging. The study is a crucial step forward for printable, metal-electrode-free, and evaporation-free perovskite PV technologies.

5 years ago we started working on carbon electrodes for p-i-n devices. Little did we know how difficult it would turn out to be. But hey we did it 🤗 also found out that carbon electrodes are actually semiconducting

pubs.acs.org/doi/full/10....

Photo of the plant visit

The semester ends with a highlight for my “ #Sustainability of Materials and Technologies” lecture: we visited the Fritz Winter plant, Germany’s largest iron foundry. Fascinating tour and exciting discussions how to reach #CarbonNeutrality and material #circularity at this heavy industry branch.

Einladung zur 14. Veranstaltung der MarburgSustainabilityTalks 2025

Heute enden die #MarburgSustainabilityTalks 2025 mit dem Vortrag zu #ÖkologischerHandabdruck. Ich freue mich auf einen Vortrag von Carina Spieß, Referentin #BNE, @germanwatch.bsky.social zu “Wissen mit Wirkung: #Zukunftsbildung als Fundament für die nachhaltige Transformation”.

Marburg sustainability talks, Tuesdays 16:15, large physics lecture hall and online.

Today we discuss #SustainableCities at the #MarburgSustainabilityTalk: Assistant Professor Noura Wahby, American University in Cairo and cam.ac.uk University of Cambridge will talk about “Sustainable Urban Water Access: Cairo's Community-led Initiatives”.

Marburg Sustainability Talks, 16:15, größer Hörsaal Physik Marburg

Ich freue mich auf den Vortrag von Prof. Angela Francke, #Radverkehr und Nahmobilität, Universität Kassel, bei den heutigen #MarburgSustainabilityTalks: „Auf die Räder, fertig, los: Wege zur #Mobilitätswende”

INvitation to the MarburgSustainability talks on July 1st 2025, 16:15 CET, large physics lecture hall at UNiversity of Marburg or online.

Today at the #MarburgSustainabilityTalsk: Jiska de Groot from the African Climate & Development Initiative acdi.bsky.social, University of Cape Town will talk about “The human factor: Lessons from decades of technological innovation for #sustainable #energy futures“.

Tuesday, 17 June 2025. Marburg sustainabilitys in the physics lecture hall, also streamed online.

"What do we (not) know about the #resilience of the global #foodsystem?" - Estelle Paulus (ecioxford.bsky.social‬ @ox.ac.uk ) will talk about this tomorrow at the #MarburgSustainabilityTalks. I'm really excited to hear what she'll tell us about "resilient doughnuts."🌍🍩

Sharepic zur Sustainability Talks Filmvorführung im Kino Capitol, 10.06. 16:15.

ECTS im Kino sammeln? Nur heute bei den #MarburgSustainabilityTalks: Filmvorführung im Capitol “urgewald - Auf den Spuren des Geldes” und anschließendes Gespräch mit Pia Wiesner und Judith Hentschel von urgewald e.V.

YouTube video by Solar@FAU Can humanity make the energy transition the great success story of the 21st century?

Recommendation: Marius Peters from @solarfau.bsky.social released a video of his great talk. He puts the task or our generation, the #EnergyTransition in the context of large civilisational projects humankind has mastered in the past. www.youtube.com/watch?v=LPT0...

It was a great pleasure welcoming Patrick Flamm @ptrckflmm.bsky.social from the Peace Research Institute Frankfurt last week at the #MarburgSustainabilityTalks. After a tour through the #MarburgPeroLab, he was giving a talk on #Peace and #Security in the #Anthropocene.

Marburg Sustainability Talks 03.06.25

Heute bei den #MarburgSustainabiltyTalks: Prof. @frederic-hanusch.bsky.social von der @jlugiessen.bsky.social spricht zum Thema “Planetares Denken und Handeln: Politik mit dem Planeten” #PlanetaryThinking

Marburg sustainability talks, Tuesdays, 4 pm, large physics lecture hall in Marburg.

Todays topic at the #MarburgSustainabilityTalks: “Driving cracks in ideology: Utopian thinking, structural attributions, and system change in the climate crisis”. I am looking forward to the talk from Dr. Edward Clarke, researcher on social psychology at the @unimarburg.bsky.social.

How can we make TW-scale PV #sustainable? If you are at the #HOPV25 conference in Rome and want to find out more, join my invited talk, today in session 1B2 (sustainability of #perovskite PV).

Picture showing participants of UK German springboard meeting in Edinburgh.

Thank you Yue Hu for organizing the #UKGermany Springboard Meeting on #Perovskite PV at University of #Edinburgh with USwansea, @ox.ac.uk , HZB, @unistuttgart.bsky.social & @unimarburg.bsky.social. Great discussions ...and even lots of sunshine in Scottland.

Sharepic zu den Marburg Sustainability Talks. 06.05.25.

Heute spricht Dr. Michaela Meurer bei den #MarburgSustainabilityTalks zum Thema Zivilgesellschaftliches Handeln - Klimawandel und Strategien der Resilienz in Brasilien und Mosambik. 16:00 gr. HS Physik @unimarburg.bsky.social oder online.

Sharepic für den zweiten Vortrag der Sustainability Talks:29.04.25, 16:15, Renthof 5 oder online.

Heute bei den #MarburgSustainabilityTalks: Green New Deals - Unvereinbar? #Klimapolitik und soziale Gerechtigkeit.
Dazu wird Dr. Juliane Schumacher vom Leibniz-Zentrum Moderner Orient Berlin @zmo-berlin.bsky.social sprechen.

Vortragseinladung "Energiekonflikte in Deutschland"

Heute starten die #MarburgSustainabilityTalks 2025 mit dem Thema: " #Energieversorgung - #Energiekonflikte in Deutschland". Dazu spricht Prof. Dr. Sören Becker von der @unimarburg.bsky.social, um 16:15 Uhr im großen Hörsaal Physik und online.
@physicsmarburg.bsky.social

More infos here: www.uni-marburg.de/de/universit...

Program of the Marburg Sustainability Talks 2025

I am looking forward to meeting inspiring speakers from Marburg, Kassel, Frankfurt... Oxford, Cairo and Cape Town.
Join us online or in person in the lecture hall of @physicsmarburg.bsky.social - every Tuesday at 4pm.